IN ITS FOURTH battle Federal Communications Commission 196971 AMA forced defend 72 MHz RC aircraft-only channels against RC boat car users requesting use RC aircraft fliers experienced consid erable interference Citizen Band radio users earlier 27 MHz channels moti vating AMAs request FCC authori zation 72 MHz frequencies five new 72 MHz channels AMA acquired 1966 well received RC modelers outset continued 1969 RC airplane competition growing rapidly safely However radio-controlled boats cars authorized use 27 MHz chan nels beginning invade 72 MHz RC aircraft-only channels least some intrusion other RC branches Top Walt Bill Good during Guft flight 1947 Nats Minneapolis Note smail transmitter down 5 watts Theyre still 50 MHz ham frequency Harry Geyer left calling time judge Ken Carter kneeling right Above left Jim Walkers plane 30-watt 50 MHz ham transmitter top boxes transmitter multicontrol unit Pozipo sequence control time rudder elevator engine Jim photo won 1946 Nate RC event people picture iden tified Above right Charlie Siegfrieds 110-watt transmitter just about fills trunk car operated 50 MHz ham frequency 60 Model Aviation Vernon MacNabb seen 1950 holding first commercial license-free RC transmitters operating 465 MHz Purdue-shined fellow right holding 465 MHz receiver lad left identified Note remarkably small size unit tiny dipole antenna caused same problem aggra vated RC fliers few years earlier interference CB operators Califor nia RC boat competitions held over 20 boating clubs nearly 700 members CB voice transmitters disturbing boat controls 27 MHz Since some boats weighed much eight pounds zoomed along 60 mph RC boaters contended CB interference could dangerous Consequently spring 1969 W C Young California RC boater peti tioned FCC RC boat channels 72 MHz FCC responded releasing rule-making Docket #18733 November 1969 proposing RC boats cars share five aircraft channels 72 MHz As ex pected AMA strongly objected such joint usage because would endanger primary advantage gained 1966 safety RC airplanes June 1970 FCC countered second proposal version three chan nels would retained aircraft two non-aircraft two additional chan nels shared types models AMA objected cutting aircraft-only channels five three third final solution proposed adopted Becoming effective November 15 1971 reserved four channels RC aircraft-only use designated three shared channels Giving RC aircraft use seven channels boats cars three viable solution time Approval unanimous vote FCC Commis sioners AMA attorney Jerry Courtneys efforts working FCC obtaining previous legislative action greatly ap Charlie Siegfried seen plane 1947 Nats holding control box sole function control box send signals transmitter trunk car preciated RC aircraft modelers letter John Worth dated October 6 1971 Courtney stated A has deed discharged trust reposed aircraft modeler fraternity twice re versing stream proposed governmen tal action adverse interests air craft modelers Verbally assured us unusual time AMA membership 30000 compared few thousand national organizations RC boat car users AMAs large size prior experience FCC pro cedures helpful RC modelers instance representatives two organizations associated RC fraternity objected RC modelers use 72 MHz band Frequency Committee Chairman Ed Lorenz gratified FCCs defense AMA International Municipal Signal Association IMSA International Association Fire Chiefs IAFC proposed docket RC channels completely removed 72-76 band due possible interference emergency call box operation response FCC stated IMSA IAFC did present specific evidence harm ful interference adding Furthermore Commission un aware instances harmful interfer ence model craft operation other Commission services operating five shared frequencies presently avail able 72-76 MHz range over past five years consequently possibility increased interference fire radio other shared services considered minimal favorable response evidence AMA RCers carefully follow ing hard-earned regulations gained respect FCC its Fourth July 1989 61 AMA President CO Wright 1948 just before meeting FCC officials Washington DC Attending AMA addition Wright Willis Brown Russ Nichols Walt Good Left lineup RC Pattern models waiting daily qualifying line 1958 Nats held near Chicago Most planes equipped tuned-reed pulse-proportional controls Right Gordon Gabbert seen version Dale Roots Ascender model top Pattern ships competing 1958 Note low-wing Astro-Hog just left also very competitive airplane Left Three delta-configuration Pylon Racers 1958 Nats Weldon Smith pioneers delta racer Right Bob Wischers 2nd-place Scale plane looks like 1-19 actually rare Marine Corps version called OE-2 derived Cessna-i 72 Note typical ground-based transmitter left controlled WAG three-tube RX pulsing rudder three speeds Fox 19 engine Battle agency AMA de fended its RC frequency needs increased its stature Ed Lorenz now living Florida re minded AMA Frequency Com mittee helped raise unheard-of sum $10000 finance legal costs reach ing accommodation RC boat car users Donations came came both industry modelers 1974 FCC proposal five RC channels 27 MHz band allocated Citizen Band radio expansion signaled beginning Fifth Battle strug gle ended 1976 FCC issued Docket #20120 July 31 1974 proposing 27 MHz CB channels increased 22 45 cause huge increase number licensed CBers According FCC records number CBers five million creasing one-half million per month AMA Frequency Chairman John Strong committee concerned proposal reasonably Five new channels proposed CB use RC frequencies since FCC first sanctioned 1958 Although RC fliers moved 72 MHz 1960s 1970s some still using 27 MHz boat car operators ad dition toy RC market produced its less expensive units frequency cause vulner ability RC planes nearby CBers joint use five targeted 27 MHz frequen cies would quickly drive RCers out band AMA coun terproposed FCC five class C RC slots retained RC usage televi sion industry also opposed expan sion CB chan nels anticipating increased television inter ference harmonics CB sets combined efforts AMA Jerry Courtney hundreds letters AMA members FCC succeeded preserving five imperiled RC channels types RC use After several modi fications FCC 1975 1976 Docket #20 120 assigning CBers 17 new channels total 40 became effec tive January 1 1977 Some 12 years later five 27 MHz RC frequencies still use Sixth Battle obtain 80 channels RC Models1977-83 ink drying Docket #20 120 other events threatening RC aircraft use both 27 MHz 72 MHz channels Despite nominal victory 1977 docket ex plosive growth CB operation five 13 million between 1976 1978 practi cally eliminated safe use 27 MHz slots RC aircraft Most RCers driven seven 72 MHz frequencies Unfortunately channels becom ing increasingly cluttered other legal 62 Model Aviation blackboard shows status RC events qualifying days 1958 Nats near Chicago largest RC Nats staged up time 268 entries six categories users some areas country rapid up swing radio paging system usage 72 MHz eclipsing RC planes St Petersburg area Florida example three paging systems different RC spot similar situations ex isted other states Since RC channels assigned secondary priority usage no choice faced conflict except convert another RC channel free pagers RC group appealed regional FCC office explanation pager assigned RC spots FCC representative said dont al locate frequencies just process applica tions other words pager asked non-RC spot several no conflict RC fre quency would have occurred course FCC could easily have answered RC usage protected other us ers same frequency As early 1971 AMA spon sored FAI World Championship RC Pattern models near Philadelphia called regional FCC office request assist ance monitoring RC spectrum safety purposes during meet Though sympathetic request office too understaffed help Upon learning Hewlett-Packard company loaned us four late-model spectrum analyzers monitoring task FCC officer told Thats much better can just go ahead give call run serious interference Ill try help spectrum analyzer scopes meet showed 22 CR channels active intermittent illegal voice signals RC channels During contest simply delayed launch RC plane until scope showed clear channel tactic worked None 240 flights22 countries 60 planes participatedexpe rienced crashes due interfering signals didnt have call understaffed FCC office 1978 rapidly deteriorating accessi bility assigned RC channels spurred intensive effort AMA RC Fre quency Committee gain safer RC channels future assist ance Chairman John Strong attor neys Jerry Courtney Jack Smith committee drew up plan generating rule-making petition submitted FCC Little did realize time embarking six-year-long effort elusive exclusive channels1979 drafting rule-making petition FCC Frequency Committee planned focus its efforts 72-75 MHz band itially assuming truly exclusive chan nels available reasoned ob taining sufficient number channels 72-75 MHz band would obviate con flicts allowing us use clear channels avoid other occu July 1989 63 Close-up Vernon MacNabbs Citizen-Ship 465 MHz receiver Note aluminum base also loop antenna receiver measures 2 x 3 x 4 weighs 5 oz Its single tube superregenerative receiver using Sigma relay switch actuator escapement Gene Foxworthy Indianapolis IN won 1950 Nats 465 MHz gear Hoosier Hot Shot Note twin rudders wing slots tricycle landing geara very modern rig time NEW FEATURES ADDED! es Four Aircraft Setups Includes Seven Different Servo Configurations Individual Surface Travel Limits Centering Single Switch Presets Launch Speed Modes Full Trailing Edge Control Enhanced Mixing Functions Crow Landing Capability * User Selectable Cross Trim Capability Flap Stick Reversing Elevator Camber VTR * Automatic Selection High Ail Rudder Mixing Launch Landing Modes * New Feature Fully installed kit Control Systems Laboratories 238S Hillview Dr Milpitas CA 95035 408 946-4142 Aiztronics ami Module 75P registered trademarks Aictronics Inc ATRCSTM Advaneed Teehnolog Radio Control System Works standard FM/PPM Receivers AirtronicsTh PCM Receivers Converts Module 75P advanced computerized control system Elevator Camber % I//2V/ 0 070 100 Elevator Stick Position % pants Which channels clear ex pected vary different geographic ar eas depending local pager frequen cies Further planned request fre quency usage types RC models divide channels between aircraft surface craft very beginning After number committee meetings drafts proposal 32-page peti tion rule-making submitted FCC accepted January 8 1979 RM-3248 Review petition over following year involved constructive interplay tween Jack Smith behalf AMA Don Campbell FCC addition spokesman Smith AMA RC Frequency Committee others participated periodically Mike Gilbertson expert electronics engineer supplied answers numerous technical questions FCC staff Perhaps goal exclusive RC chan nels wouldnt elude us after strategy attaining hammered out AMA Frequency meetings supported Don Campbell FCC late 1979 seemed promising Since nor mal commercial channel spacing THE BEST FUSELAGE JIG EVER PERIOD Provides Solid Support Accurate Building Rugged Construction 7 Ply Aircraft Plywood Provides Lifetime Use Two Sizes Available Regular Fuselages Up 6 Wide Jumbo Fuselages Up 9 Wide Use Own Building Board Work Bench Base Mount Jig Station Uni-Strut Guide Rails Most Versatile Set-Up Contains Complete Hardware Instructions Including Uni-Strut Information Box 4 Standard Jig Stations 11795 Box 4 Jumbo Jig Stations 1995 TwoS ft long Guide Rails including mounting nuts 2195 20 kHz raster shift RC chan nels over 10 kHz ensure no RC channel would precisely commer cial channel Spacing channels 10 kHz intervals would far preferable dead especially capability newer narrow-band receivers After ing checked technical experts among committee members concept 10 kHz offset included updated 45page RM-3248 sent FCC September 1980 definition new channels truly exclusive because assigned FCC other user Still another round questions swers took place including briefing seven FCC Commissioners Fred Marks team late 1981 Bob Aberle became chairman AMA RC Frequency Committee 1981 happy Notice Proposed Rule Making last approved FCC May 1982 placed FCC ac tion chain comments parties AMA widely distributed contents new proposal RC industries hobby magazines national organizations cars boats AMA memberIVANS MAGIC GADGET protractor device used Ivan Kristensen accurately measure aileron elevator rudder throw takes guess work out trimming out airplane qualty tool complete instructions log book carrying case1795 PLUG-IN ADJUSTABLE STAB KIT last can optimize stab incidence best flight charac teristics pair glass filled nylon adjusters included provide micro screw adjustment smaller front tube Main tube aluminum matching phenolic sncket S695 Include $2 SOltem UPS esidents Add 6% Sales Tax GATOR RIC PRODUCTS 3713 Pompano Dr acola FL 32514 476-8639 ship Responses sources 99 percent favorable wont comment less percent neg ative responses received Following review comments re ceived FCC assembled final report order approving November 1982 Six years making 1982 FCC legislation milestone RC model ers awarded RC aircraft 50 channels RC boats cars receiving 30 frequency distribution expected use ful years come phase-in plan drawn up allow manufacturers users adapt new set frequencies between 1983 1991 first phase aircraft completed December 1987 final phase 50 channels scheduled 1991 What long significant effort culmi nating gratifying outcome Sixth Battle 40 years on-again off-again struggles FCC have Readers radio amateurs will have observed very little detail has de voted ham frequencies played such important role pioneering RC hobby still effective RC use PLUG-IN WING ADJUSTER KIT Four glass filled nylon brackets included key wing panels front rear allow accurately adjust panel straight flight Complete hardware & instructions1995 _ WING TUBE & SOCKETS Aluminum alloy tubing plug-in wings Included pair special slip-fit phenolic sorkets build wing structure Now size models 718 dia aS 895 ldiax2S 995 1diax311495 64 Model Aviation TAIBI 1/8-INCH3648 BALSA WOOD STIcKS 1/18-INCH3848 1/160111626 1116313207 1116x1/60611 1/I6o3/160913 1/1801/41015 1/1603/81317 1/161/21620 1/163/42128 3/32-INCH3848 3/323/320811 3/32 01/80913 3/32031161015 3/32 01/41316 3/3203/81419 3/32 01/21621 3/323/42431 Double Balsa Wood Prices Spruce Basswood Sticks 1/80 1/8 1/8 o 3116 1/80 1/4 1/8 0 318 1/801/3 1/80314 3/8-INCH3848 09113/803182737 11153/80 1/23041 13173/8o3144460 1621 17241/2-INCH3648 20331/2 0 1/23749 1/2 03145270 TRIANGULAR CUT BALSA 1/401/403624 3/8o3/8o3629 1/20 1/203637 3/4o3/4o3647 10103061 BALSA PLANKS 3/403036178 1x2o36184 103036230 104036303 202036230 203036329 204030464 3o3o36490 304030680 3/18-INCH3848 3/16031161317 3/180 1/41419 3/1803181621 3/160 1/21820 3/16 0 3142838 1/4-INCH3648 1/40 1/41621 1/403/81825 1/401/22129 1/403143142 B/i 8-INCH3848 9/160 5/162027 9/16 3182230 5/180 1/22736 5/16 3143952 BALSA SHEETS 1-INCH3848 1/160 12736 3/32013040 1/80 13344 3/16 13749 I/do 14157 3/8 0 19372 1/2 o 16588 2-INCH3648 1/32023040 1/160 23648 3/32 o 24154 1/8 024660 3/160 25472 1/4026384 3/80277103 3-INCH3848 1/32034053 1/16034358 3/32 35270 1/8036080 3/18 037295 1/40384112 5/1603103134 3/803130160 1/203150200 4-INCH3648 1/32046587 1/180473101 3/320482109 1/80495128 3/1604114151 1/404131193 3/804182271 1/202 113 150 1/204219325 BIRCH PLYWOOD 1/840120 12175 1/84012024350 1/64 012048700 1/64 a490482800 1/320601252 1/320120 12105 1/320 12024210 1/320 12049430 I/16o6o1252 1/180120 12108 1/18012024210 1/16o12040430 3/32o6o1291 3/320120 12163 3/32 012 0 24328 3/32 o12 0 48652 1/8o8o1289 1/8012012178 1/8012024356 1/8o12o49712 3116o6s1274 3/160120 12146 3/160120 24293 3/16 012o48585 1/40601274 1/40120 12146 1/4 012024293 1/4 012046585 3/80 120 12180 3/8 0 12 0 24360 318012048720 1/2 0120 12202 1/2 0120 24405 1/2 012048908 LITE PLYWOOD 1/901201256 1/80 12024112 1/8012048224 TAPERED TRAILING EDGE3648 1/80 1/22230 3/16 0 3/42940 1/40 I4255 5/16o 1/o4461 3/8o 15272 Superior Aircraft Materials 12020-G Centralla iian Gardens CalIfornia 90716 865-3220 Handling Charge -$500 $300 COD mum Order $2000 FOB Factory accept Peraonal checka COD fornia Recidenta add 6% Salea Tax today channels have coordi nated Amateur Radio Relay League Dick Jansson WD4FAB other RC hams over years RC channels li censed hams included summary follows Summary Comments1988 ac companying table summarizes ac quisitions changes RC frequen cies through confrontations negotia tions FCC over past 40 years retrospect frequency changes RC fliers over years due fact truly exclusive RC channels mercy other users numbers growing just rapidly needs rivals keep ing pace own 80 new RC channels literally ex clusive FCC has designated no other us ers RCers shouldnt vulnerable co-channel usersbecause shouldnt Adjacent non-RC channels will close 10 kHz possibly could cause trouble alternate RC chan nels provide fallback Fortunately sophisticated technology available implement required new narrow-band RC equipment German RC channels 35 MHz spaced 10 kHz intervals have use successfully almost 10 years Further recent reports dicate several companies already selling RC equipment meeting 1991 specifi cations reasonable cost future looks good wide frequency separation between RC Aircraft RC Surface Vehicle bands should prevent mutual interfer ence between two classes thank RC modelers RC dustry members national interna tional plane boat auto organizations have given support apprecia tion tremendous frequency acquisi tion effort AMA organization has carried out over past four decades expect present system RC-only channels workable hope 40 years RC frequency batfies FCC have reached end Weve quite lot practice deploying resources however need should arise Lets make certain value hard-earned frequencies asset understand importance using wisely care should serve us long long time come AMA Frequency Committee mem bers have contributed hours time toward acquisition RC channels deserve special thanks names follow AMA RC Frequency Committees 1946-1988 1946-1962 Walt GoodChairman MembersWillis Brown Warren Bartlett Clay Freese Ed Lorenz Howard McEntee Dick Schumacher William Stelmach 1963-1971 Ed LorenzChairman MembersWalt Good Maynard Hill Ver non MacNabb Howard McEntee John Phelps Jack Port Paul Runge 1972-1980 John StrongChairman MembersBob Aberle Jack Albrecht Walt Good Dick Jansson Fred Marks C Tor rey Williams 1981-1982 Bob AberleChairman MembersJack Albrecht Dave Brown Walt Good Bill Hershberger Dick Jans Continued page 157 Announcing thGQRBI7VERi Multi channel Nan dlaunch Competition* w Wingapan GlideriPlapa NEW LE1EL OF ORMANCE UHAZATD] 1JkYCH COMPETIOH 11PI NHV BE THE SAUE 1A * Sin@IJ uervoa up ConatruoMon HAS AX2D THE ORBITER EE 4061Eardvage / Llnkageg moluved OFFERS FL SPAN 1 REFLEZ JZFST Uhf THE LO1PESONI $aadlatampe Jar ear aew uatJeg Ow Newulefler IXOMD WZND 4F-J La Now Available $121230 Damson Roaa Bothell PtA 98021 206-776-8067 July 1989 65 DODGSON very smooth-running tail rotor unusually high degree control accuracy tail rotor drive system based 2mmdiameter steel drive shaft design has proved highly reliable Now shaft sup ported special brass tube tube needs lubricated initially over its entire length af ter installation drive system operates freely vibration requires no maintenance Magic Ranger brass tube set slot ted wood strip installed top fuselage boom open trainer version tube sus pended tail boom several supports main difference between open trainerconfiguration Magic fuselage-equipped Magic Ranger found tail boom canopy canopy assembled two halfshells fitted over radio equipment mechanical assembly secured side two knurled knobs complete servo sup port structure same both models tail boom Magic aluminum tube attached mechanical assembly us ing newly designed composite fixture solidly braced additional support tube Flexible landing gear supplied black stan dard although white now available op tion main rotor head control system System 88 virtually un changed Based control movements offset 450 system has proven outstand ingly effective has eliminated completely tendency model balloon dive flying forward fast speed new fea ture injection-molded servo structure As can see Magic sounds good its long blades tail boom should smooth capital S So much new stuff Its summer Get broken bird back together lets go fly BCNU RC Battle/Good Continued page 65 son Fred Marks John Strong C Torrey Williams 1983-1984 George MyersChairman MembersJack Albrecht Dave Brown Bill Hershberger John Lange Fred Marks Jim Oddino C Torrey Williams Al Watson ConsultantsBob Aberle Walt Good Dick Jansson 1985-1988 Fred MarksChairman MembersJack Albrecht Dave Brown Steve Helms Bill Hershberger Dave Hil senhoff George Myers Bob Novak Pete Waters Jim Oddino Warren Plohr George Steiner ConsultantsWalt Good Dick Jansson individual name cluded above listings has volved Frequency Committee since 1963 AMA president since became AMA ex ecutive director 1964 name John Worth John has longtime personal obses sion RC has contributed immeasur ably RC frequency story through executive capacity AMA Sorting through hundreds files preparing article Ive seen hand tying gether reporting RC Committees ef forts Thanks John being long-term contributing phantom member AMA RC Frequency Committee Pou du Ciel/Allison Continued page 71 mouflage lighter colors seen black-and-white photo such light grays blues Using artists airbrush opaque watercolors also called designers colors taped condenser paper over paper wing stab outlines cam ouflage patterns drawn method colors preshrinks covering operation fuselage bit trickier pattern used centered cowl cabin sections sides bottom sides left rightsort Scale model Ror schach inkblot shape painted three sets Id have extras mistakes repairs fuselage covered separate pieces sides lower sides upper cowl area lower cowl cabin roof Trial fit cabanes landing gear cabin side panels fuselage removing before covering fuselage pieces painted separately glued completed fuselage windshield added using RC-56 glue along edge cabin roof prepainted wind shield posts Glue rear edges windshield rear cabin posts before glu ing side panels posts did glue front bottom edge windshield top fuselage used Pactra enamel engine cylinders top cooling fins painted unit gloss black mix silver little cop per little dark gray dry brush lightly across cooling fins high lights edges fins giving cylin ders oily slightly rusted look takes exhausts get same treatment headbolts pushrods silver highlighting contrast Spark plugs rocker covers white Plug wires prop blades tires flat black dark gray MIAMA Pistachio Scale rules include three weight categories Category Iunder two grams Iltwo three grams III over three grams strategy try build lowest weight allowed par ticular category taking advantage close correlation between wing loading duration dont like ghost ships dont like empty calories either concen trate scale detail ie weight toward front end intention dazzling judges eye great en gine spinner gas cap etc barely notices paint job gets more transparent toward tail its lightweight rubdown registration numbers THE LEADER IN COMPETITION NEW THP DESIGN DIAPRICE 15 16 NEW PRO SERIES 3 II 1 NEW HIGH TECH AIRFOIL SECTION 10 TO 200/o INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 534 634 72833/,456 8334568 94566Io77 104566/7 106W8W 106EW 114677/o7/ol8 115W 116EW 1167 124W 125W 1256 1356 1456 1556 164/N 16678 RC PYLON RACING SERIES 500 DIA PITCHPRICE 75N 5N SERIES 400C 866T7/o7 977/,73/ W WIDE BLADE 0EW EXTRA WIDE N NARROW July 1989 157 PROPELLERS TAILORED HELICAL PITCH DEVELOPEDTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW PITCH THP 677/o8 677/6 67 678
Edition: Model Aviation - 1989/07
Page Numbers: 60, 61, 62, 63, 64, 65, 157
IN ITS FOURTH battle Federal Communications Commission 196971 AMA forced defend 72 MHz RC aircraft-only channels against RC boat car users requesting use RC aircraft fliers experienced consid erable interference Citizen Band radio users earlier 27 MHz channels moti vating AMAs request FCC authori zation 72 MHz frequencies five new 72 MHz channels AMA acquired 1966 well received RC modelers outset continued 1969 RC airplane competition growing rapidly safely However radio-controlled boats cars authorized use 27 MHz chan nels beginning invade 72 MHz RC aircraft-only channels least some intrusion other RC branches Top Walt Bill Good during Guft flight 1947 Nats Minneapolis Note smail transmitter down 5 watts Theyre still 50 MHz ham frequency Harry Geyer left calling time judge Ken Carter kneeling right Above left Jim Walkers plane 30-watt 50 MHz ham transmitter top boxes transmitter multicontrol unit Pozipo sequence control time rudder elevator engine Jim photo won 1946 Nate RC event people picture iden tified Above right Charlie Siegfrieds 110-watt transmitter just about fills trunk car operated 50 MHz ham frequency 60 Model Aviation Vernon MacNabb seen 1950 holding first commercial license-free RC transmitters operating 465 MHz Purdue-shined fellow right holding 465 MHz receiver lad left identified Note remarkably small size unit tiny dipole antenna caused same problem aggra vated RC fliers few years earlier interference CB operators Califor nia RC boat competitions held over 20 boating clubs nearly 700 members CB voice transmitters disturbing boat controls 27 MHz Since some boats weighed much eight pounds zoomed along 60 mph RC boaters contended CB interference could dangerous Consequently spring 1969 W C Young California RC boater peti tioned FCC RC boat channels 72 MHz FCC responded releasing rule-making Docket #18733 November 1969 proposing RC boats cars share five aircraft channels 72 MHz As ex pected AMA strongly objected such joint usage because would endanger primary advantage gained 1966 safety RC airplanes June 1970 FCC countered second proposal version three chan nels would retained aircraft two non-aircraft two additional chan nels shared types models AMA objected cutting aircraft-only channels five three third final solution proposed adopted Becoming effective November 15 1971 reserved four channels RC aircraft-only use designated three shared channels Giving RC aircraft use seven channels boats cars three viable solution time Approval unanimous vote FCC Commis sioners AMA attorney Jerry Courtneys efforts working FCC obtaining previous legislative action greatly ap Charlie Siegfried seen plane 1947 Nats holding control box sole function control box send signals transmitter trunk car preciated RC aircraft modelers letter John Worth dated October 6 1971 Courtney stated A has deed discharged trust reposed aircraft modeler fraternity twice re versing stream proposed governmen tal action adverse interests air craft modelers Verbally assured us unusual time AMA membership 30000 compared few thousand national organizations RC boat car users AMAs large size prior experience FCC pro cedures helpful RC modelers instance representatives two organizations associated RC fraternity objected RC modelers use 72 MHz band Frequency Committee Chairman Ed Lorenz gratified FCCs defense AMA International Municipal Signal Association IMSA International Association Fire Chiefs IAFC proposed docket RC channels completely removed 72-76 band due possible interference emergency call box operation response FCC stated IMSA IAFC did present specific evidence harm ful interference adding Furthermore Commission un aware instances harmful interfer ence model craft operation other Commission services operating five shared frequencies presently avail able 72-76 MHz range over past five years consequently possibility increased interference fire radio other shared services considered minimal favorable response evidence AMA RCers carefully follow ing hard-earned regulations gained respect FCC its Fourth July 1989 61 AMA President CO Wright 1948 just before meeting FCC officials Washington DC Attending AMA addition Wright Willis Brown Russ Nichols Walt Good Left lineup RC Pattern models waiting daily qualifying line 1958 Nats held near Chicago Most planes equipped tuned-reed pulse-proportional controls Right Gordon Gabbert seen version Dale Roots Ascender model top Pattern ships competing 1958 Note low-wing Astro-Hog just left also very competitive airplane Left Three delta-configuration Pylon Racers 1958 Nats Weldon Smith pioneers delta racer Right Bob Wischers 2nd-place Scale plane looks like 1-19 actually rare Marine Corps version called OE-2 derived Cessna-i 72 Note typical ground-based transmitter left controlled WAG three-tube RX pulsing rudder three speeds Fox 19 engine Battle agency AMA de fended its RC frequency needs increased its stature Ed Lorenz now living Florida re minded AMA Frequency Com mittee helped raise unheard-of sum $10000 finance legal costs reach ing accommodation RC boat car users Donations came came both industry modelers 1974 FCC proposal five RC channels 27 MHz band allocated Citizen Band radio expansion signaled beginning Fifth Battle strug gle ended 1976 FCC issued Docket #20120 July 31 1974 proposing 27 MHz CB channels increased 22 45 cause huge increase number licensed CBers According FCC records number CBers five million creasing one-half million per month AMA Frequency Chairman John Strong committee concerned proposal reasonably Five new channels proposed CB use RC frequencies since FCC first sanctioned 1958 Although RC fliers moved 72 MHz 1960s 1970s some still using 27 MHz boat car operators ad dition toy RC market produced its less expensive units frequency cause vulner ability RC planes nearby CBers joint use five targeted 27 MHz frequen cies would quickly drive RCers out band AMA coun terproposed FCC five class C RC slots retained RC usage televi sion industry also opposed expan sion CB chan nels anticipating increased television inter ference harmonics CB sets combined efforts AMA Jerry Courtney hundreds letters AMA members FCC succeeded preserving five imperiled RC channels types RC use After several modi fications FCC 1975 1976 Docket #20 120 assigning CBers 17 new channels total 40 became effec tive January 1 1977 Some 12 years later five 27 MHz RC frequencies still use Sixth Battle obtain 80 channels RC Models1977-83 ink drying Docket #20 120 other events threatening RC aircraft use both 27 MHz 72 MHz channels Despite nominal victory 1977 docket ex plosive growth CB operation five 13 million between 1976 1978 practi cally eliminated safe use 27 MHz slots RC aircraft Most RCers driven seven 72 MHz frequencies Unfortunately channels becom ing increasingly cluttered other legal 62 Model Aviation blackboard shows status RC events qualifying days 1958 Nats near Chicago largest RC Nats staged up time 268 entries six categories users some areas country rapid up swing radio paging system usage 72 MHz eclipsing RC planes St Petersburg area Florida example three paging systems different RC spot similar situations ex isted other states Since RC channels assigned secondary priority usage no choice faced conflict except convert another RC channel free pagers RC group appealed regional FCC office explanation pager assigned RC spots FCC representative said dont al locate frequencies just process applica tions other words pager asked non-RC spot several no conflict RC fre quency would have occurred course FCC could easily have answered RC usage protected other us ers same frequency As early 1971 AMA spon sored FAI World Championship RC Pattern models near Philadelphia called regional FCC office request assist ance monitoring RC spectrum safety purposes during meet Though sympathetic request office too understaffed help Upon learning Hewlett-Packard company loaned us four late-model spectrum analyzers monitoring task FCC officer told Thats much better can just go ahead give call run serious interference Ill try help spectrum analyzer scopes meet showed 22 CR channels active intermittent illegal voice signals RC channels During contest simply delayed launch RC plane until scope showed clear channel tactic worked None 240 flights22 countries 60 planes participatedexpe rienced crashes due interfering signals didnt have call understaffed FCC office 1978 rapidly deteriorating accessi bility assigned RC channels spurred intensive effort AMA RC Fre quency Committee gain safer RC channels future assist ance Chairman John Strong attor neys Jerry Courtney Jack Smith committee drew up plan generating rule-making petition submitted FCC Little did realize time embarking six-year-long effort elusive exclusive channels1979 drafting rule-making petition FCC Frequency Committee planned focus its efforts 72-75 MHz band itially assuming truly exclusive chan nels available reasoned ob taining sufficient number channels 72-75 MHz band would obviate con flicts allowing us use clear channels avoid other occu July 1989 63 Close-up Vernon MacNabbs Citizen-Ship 465 MHz receiver Note aluminum base also loop antenna receiver measures 2 x 3 x 4 weighs 5 oz Its single tube superregenerative receiver using Sigma relay switch actuator escapement Gene Foxworthy Indianapolis IN won 1950 Nats 465 MHz gear Hoosier Hot Shot Note twin rudders wing slots tricycle landing geara very modern rig time NEW FEATURES ADDED! es Four Aircraft Setups Includes Seven Different Servo Configurations Individual Surface Travel Limits Centering Single Switch Presets Launch Speed Modes Full Trailing Edge Control Enhanced Mixing Functions Crow Landing Capability * User Selectable Cross Trim Capability Flap Stick Reversing Elevator Camber VTR * Automatic Selection High Ail Rudder Mixing Launch Landing Modes * New Feature Fully installed kit Control Systems Laboratories 238S Hillview Dr Milpitas CA 95035 408 946-4142 Aiztronics ami Module 75P registered trademarks Aictronics Inc ATRCSTM Advaneed Teehnolog Radio Control System Works standard FM/PPM Receivers AirtronicsTh PCM Receivers Converts Module 75P advanced computerized control system Elevator Camber % I//2V/ 0 070 100 Elevator Stick Position % pants Which channels clear ex pected vary different geographic ar eas depending local pager frequen cies Further planned request fre quency usage types RC models divide channels between aircraft surface craft very beginning After number committee meetings drafts proposal 32-page peti tion rule-making submitted FCC accepted January 8 1979 RM-3248 Review petition over following year involved constructive interplay tween Jack Smith behalf AMA Don Campbell FCC addition spokesman Smith AMA RC Frequency Committee others participated periodically Mike Gilbertson expert electronics engineer supplied answers numerous technical questions FCC staff Perhaps goal exclusive RC chan nels wouldnt elude us after strategy attaining hammered out AMA Frequency meetings supported Don Campbell FCC late 1979 seemed promising Since nor mal commercial channel spacing THE BEST FUSELAGE JIG EVER PERIOD Provides Solid Support Accurate Building Rugged Construction 7 Ply Aircraft Plywood Provides Lifetime Use Two Sizes Available Regular Fuselages Up 6 Wide Jumbo Fuselages Up 9 Wide Use Own Building Board Work Bench Base Mount Jig Station Uni-Strut Guide Rails Most Versatile Set-Up Contains Complete Hardware Instructions Including Uni-Strut Information Box 4 Standard Jig Stations 11795 Box 4 Jumbo Jig Stations 1995 TwoS ft long Guide Rails including mounting nuts 2195 20 kHz raster shift RC chan nels over 10 kHz ensure no RC channel would precisely commer cial channel Spacing channels 10 kHz intervals would far preferable dead especially capability newer narrow-band receivers After ing checked technical experts among committee members concept 10 kHz offset included updated 45page RM-3248 sent FCC September 1980 definition new channels truly exclusive because assigned FCC other user Still another round questions swers took place including briefing seven FCC Commissioners Fred Marks team late 1981 Bob Aberle became chairman AMA RC Frequency Committee 1981 happy Notice Proposed Rule Making last approved FCC May 1982 placed FCC ac tion chain comments parties AMA widely distributed contents new proposal RC industries hobby magazines national organizations cars boats AMA memberIVANS MAGIC GADGET protractor device used Ivan Kristensen accurately measure aileron elevator rudder throw takes guess work out trimming out airplane qualty tool complete instructions log book carrying case1795 PLUG-IN ADJUSTABLE STAB KIT last can optimize stab incidence best flight charac teristics pair glass filled nylon adjusters included provide micro screw adjustment smaller front tube Main tube aluminum matching phenolic sncket S695 Include $2 SOltem UPS esidents Add 6% Sales Tax GATOR RIC PRODUCTS 3713 Pompano Dr acola FL 32514 476-8639 ship Responses sources 99 percent favorable wont comment less percent neg ative responses received Following review comments re ceived FCC assembled final report order approving November 1982 Six years making 1982 FCC legislation milestone RC model ers awarded RC aircraft 50 channels RC boats cars receiving 30 frequency distribution expected use ful years come phase-in plan drawn up allow manufacturers users adapt new set frequencies between 1983 1991 first phase aircraft completed December 1987 final phase 50 channels scheduled 1991 What long significant effort culmi nating gratifying outcome Sixth Battle 40 years on-again off-again struggles FCC have Readers radio amateurs will have observed very little detail has de voted ham frequencies played such important role pioneering RC hobby still effective RC use PLUG-IN WING ADJUSTER KIT Four glass filled nylon brackets included key wing panels front rear allow accurately adjust panel straight flight Complete hardware & instructions1995 _ WING TUBE & SOCKETS Aluminum alloy tubing plug-in wings Included pair special slip-fit phenolic sorkets build wing structure Now size models 718 dia aS 895 ldiax2S 995 1diax311495 64 Model Aviation TAIBI 1/8-INCH3648 BALSA WOOD STIcKS 1/18-INCH3848 1/160111626 1116313207 1116x1/60611 1/I6o3/160913 1/1801/41015 1/1603/81317 1/161/21620 1/163/42128 3/32-INCH3848 3/323/320811 3/32 01/80913 3/32031161015 3/32 01/41316 3/3203/81419 3/32 01/21621 3/323/42431 Double Balsa Wood Prices Spruce Basswood Sticks 1/80 1/8 1/8 o 3116 1/80 1/4 1/8 0 318 1/801/3 1/80314 3/8-INCH3848 09113/803182737 11153/80 1/23041 13173/8o3144460 1621 17241/2-INCH3648 20331/2 0 1/23749 1/2 03145270 TRIANGULAR CUT BALSA 1/401/403624 3/8o3/8o3629 1/20 1/203637 3/4o3/4o3647 10103061 BALSA PLANKS 3/403036178 1x2o36184 103036230 104036303 202036230 203036329 204030464 3o3o36490 304030680 3/18-INCH3848 3/16031161317 3/180 1/41419 3/1803181621 3/160 1/21820 3/16 0 3142838 1/4-INCH3648 1/40 1/41621 1/403/81825 1/401/22129 1/403143142 B/i 8-INCH3848 9/160 5/162027 9/16 3182230 5/180 1/22736 5/16 3143952 BALSA SHEETS 1-INCH3848 1/160 12736 3/32013040 1/80 13344 3/16 13749 I/do 14157 3/8 0 19372 1/2 o 16588 2-INCH3648 1/32023040 1/160 23648 3/32 o 24154 1/8 024660 3/160 25472 1/4026384 3/80277103 3-INCH3848 1/32034053 1/16034358 3/32 35270 1/8036080 3/18 037295 1/40384112 5/1603103134 3/803130160 1/203150200 4-INCH3648 1/32046587 1/180473101 3/320482109 1/80495128 3/1604114151 1/404131193 3/804182271 1/202 113 150 1/204219325 BIRCH PLYWOOD 1/840120 12175 1/84012024350 1/64 012048700 1/64 a490482800 1/320601252 1/320120 12105 1/320 12024210 1/320 12049430 I/16o6o1252 1/180120 12108 1/18012024210 1/16o12040430 3/32o6o1291 3/320120 12163 3/32 012 0 24328 3/32 o12 0 48652 1/8o8o1289 1/8012012178 1/8012024356 1/8o12o49712 3116o6s1274 3/160120 12146 3/160120 24293 3/16 012o48585 1/40601274 1/40120 12146 1/4 012024293 1/4 012046585 3/80 120 12180 3/8 0 12 0 24360 318012048720 1/2 0120 12202 1/2 0120 24405 1/2 012048908 LITE PLYWOOD 1/901201256 1/80 12024112 1/8012048224 TAPERED TRAILING EDGE3648 1/80 1/22230 3/16 0 3/42940 1/40 I4255 5/16o 1/o4461 3/8o 15272 Superior Aircraft Materials 12020-G Centralla iian Gardens CalIfornia 90716 865-3220 Handling Charge -$500 $300 COD mum Order $2000 FOB Factory accept Peraonal checka COD fornia Recidenta add 6% Salea Tax today channels have coordi nated Amateur Radio Relay League Dick Jansson WD4FAB other RC hams over years RC channels li censed hams included summary follows Summary Comments1988 ac companying table summarizes ac quisitions changes RC frequen cies through confrontations negotia tions FCC over past 40 years retrospect frequency changes RC fliers over years due fact truly exclusive RC channels mercy other users numbers growing just rapidly needs rivals keep ing pace own 80 new RC channels literally ex clusive FCC has designated no other us ers RCers shouldnt vulnerable co-channel usersbecause shouldnt Adjacent non-RC channels will close 10 kHz possibly could cause trouble alternate RC chan nels provide fallback Fortunately sophisticated technology available implement required new narrow-band RC equipment German RC channels 35 MHz spaced 10 kHz intervals have use successfully almost 10 years Further recent reports dicate several companies already selling RC equipment meeting 1991 specifi cations reasonable cost future looks good wide frequency separation between RC Aircraft RC Surface Vehicle bands should prevent mutual interfer ence between two classes thank RC modelers RC dustry members national interna tional plane boat auto organizations have given support apprecia tion tremendous frequency acquisi tion effort AMA organization has carried out over past four decades expect present system RC-only channels workable hope 40 years RC frequency batfies FCC have reached end Weve quite lot practice deploying resources however need should arise Lets make certain value hard-earned frequencies asset understand importance using wisely care should serve us long long time come AMA Frequency Committee mem bers have contributed hours time toward acquisition RC channels deserve special thanks names follow AMA RC Frequency Committees 1946-1988 1946-1962 Walt GoodChairman MembersWillis Brown Warren Bartlett Clay Freese Ed Lorenz Howard McEntee Dick Schumacher William Stelmach 1963-1971 Ed LorenzChairman MembersWalt Good Maynard Hill Ver non MacNabb Howard McEntee John Phelps Jack Port Paul Runge 1972-1980 John StrongChairman MembersBob Aberle Jack Albrecht Walt Good Dick Jansson Fred Marks C Tor rey Williams 1981-1982 Bob AberleChairman MembersJack Albrecht Dave Brown Walt Good Bill Hershberger Dick Jans Continued page 157 Announcing thGQRBI7VERi Multi channel Nan dlaunch Competition* w Wingapan GlideriPlapa NEW LE1EL OF ORMANCE UHAZATD] 1JkYCH COMPETIOH 11PI NHV BE THE SAUE 1A * Sin@IJ uervoa up ConatruoMon HAS AX2D THE ORBITER EE 4061Eardvage / Llnkageg moluved OFFERS FL SPAN 1 REFLEZ JZFST Uhf THE LO1PESONI $aadlatampe Jar ear aew uatJeg Ow Newulefler IXOMD WZND 4F-J La Now Available $121230 Damson Roaa Bothell PtA 98021 206-776-8067 July 1989 65 DODGSON very smooth-running tail rotor unusually high degree control accuracy tail rotor drive system based 2mmdiameter steel drive shaft design has proved highly reliable Now shaft sup ported special brass tube tube needs lubricated initially over its entire length af ter installation drive system operates freely vibration requires no maintenance Magic Ranger brass tube set slot ted wood strip installed top fuselage boom open trainer version tube sus pended tail boom several supports main difference between open trainerconfiguration Magic fuselage-equipped Magic Ranger found tail boom canopy canopy assembled two halfshells fitted over radio equipment mechanical assembly secured side two knurled knobs complete servo sup port structure same both models tail boom Magic aluminum tube attached mechanical assembly us ing newly designed composite fixture solidly braced additional support tube Flexible landing gear supplied black stan dard although white now available op tion main rotor head control system System 88 virtually un changed Based control movements offset 450 system has proven outstand ingly effective has eliminated completely tendency model balloon dive flying forward fast speed new fea ture injection-molded servo structure As can see Magic sounds good its long blades tail boom should smooth capital S So much new stuff Its summer Get broken bird back together lets go fly BCNU RC Battle/Good Continued page 65 son Fred Marks John Strong C Torrey Williams 1983-1984 George MyersChairman MembersJack Albrecht Dave Brown Bill Hershberger John Lange Fred Marks Jim Oddino C Torrey Williams Al Watson ConsultantsBob Aberle Walt Good Dick Jansson 1985-1988 Fred MarksChairman MembersJack Albrecht Dave Brown Steve Helms Bill Hershberger Dave Hil senhoff George Myers Bob Novak Pete Waters Jim Oddino Warren Plohr George Steiner ConsultantsWalt Good Dick Jansson individual name cluded above listings has volved Frequency Committee since 1963 AMA president since became AMA ex ecutive director 1964 name John Worth John has longtime personal obses sion RC has contributed immeasur ably RC frequency story through executive capacity AMA Sorting through hundreds files preparing article Ive seen hand tying gether reporting RC Committees ef forts Thanks John being long-term contributing phantom member AMA RC Frequency Committee Pou du Ciel/Allison Continued page 71 mouflage lighter colors seen black-and-white photo such light grays blues Using artists airbrush opaque watercolors also called designers colors taped condenser paper over paper wing stab outlines cam ouflage patterns drawn method colors preshrinks covering operation fuselage bit trickier pattern used centered cowl cabin sections sides bottom sides left rightsort Scale model Ror schach inkblot shape painted three sets Id have extras mistakes repairs fuselage covered separate pieces sides lower sides upper cowl area lower cowl cabin roof Trial fit cabanes landing gear cabin side panels fuselage removing before covering fuselage pieces painted separately glued completed fuselage windshield added using RC-56 glue along edge cabin roof prepainted wind shield posts Glue rear edges windshield rear cabin posts before glu ing side panels posts did glue front bottom edge windshield top fuselage used Pactra enamel engine cylinders top cooling fins painted unit gloss black mix silver little cop per little dark gray dry brush lightly across cooling fins high lights edges fins giving cylin ders oily slightly rusted look takes exhausts get same treatment headbolts pushrods silver highlighting contrast Spark plugs rocker covers white Plug wires prop blades tires flat black dark gray MIAMA Pistachio Scale rules include three weight categories Category Iunder two grams Iltwo three grams III over three grams strategy try build lowest weight allowed par ticular category taking advantage close correlation between wing loading duration dont like ghost ships dont like empty calories either concen trate scale detail ie weight toward front end intention dazzling judges eye great en gine spinner gas cap etc barely notices paint job gets more transparent toward tail its lightweight rubdown registration numbers THE LEADER IN COMPETITION NEW THP DESIGN DIAPRICE 15 16 NEW PRO SERIES 3 II 1 NEW HIGH TECH AIRFOIL SECTION 10 TO 200/o INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 534 634 72833/,456 8334568 94566Io77 104566/7 106W8W 106EW 114677/o7/ol8 115W 116EW 1167 124W 125W 1256 1356 1456 1556 164/N 16678 RC PYLON RACING SERIES 500 DIA PITCHPRICE 75N 5N SERIES 400C 866T7/o7 977/,73/ W WIDE BLADE 0EW EXTRA WIDE N NARROW July 1989 157 PROPELLERS TAILORED HELICAL PITCH DEVELOPEDTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW PITCH THP 677/o8 677/6 67 678
Edition: Model Aviation - 1989/07
Page Numbers: 60, 61, 62, 63, 64, 65, 157
IN ITS FOURTH battle Federal Communications Commission 196971 AMA forced defend 72 MHz RC aircraft-only channels against RC boat car users requesting use RC aircraft fliers experienced consid erable interference Citizen Band radio users earlier 27 MHz channels moti vating AMAs request FCC authori zation 72 MHz frequencies five new 72 MHz channels AMA acquired 1966 well received RC modelers outset continued 1969 RC airplane competition growing rapidly safely However radio-controlled boats cars authorized use 27 MHz chan nels beginning invade 72 MHz RC aircraft-only channels least some intrusion other RC branches Top Walt Bill Good during Guft flight 1947 Nats Minneapolis Note smail transmitter down 5 watts Theyre still 50 MHz ham frequency Harry Geyer left calling time judge Ken Carter kneeling right Above left Jim Walkers plane 30-watt 50 MHz ham transmitter top boxes transmitter multicontrol unit Pozipo sequence control time rudder elevator engine Jim photo won 1946 Nate RC event people picture iden tified Above right Charlie Siegfrieds 110-watt transmitter just about fills trunk car operated 50 MHz ham frequency 60 Model Aviation Vernon MacNabb seen 1950 holding first commercial license-free RC transmitters operating 465 MHz Purdue-shined fellow right holding 465 MHz receiver lad left identified Note remarkably small size unit tiny dipole antenna caused same problem aggra vated RC fliers few years earlier interference CB operators Califor nia RC boat competitions held over 20 boating clubs nearly 700 members CB voice transmitters disturbing boat controls 27 MHz Since some boats weighed much eight pounds zoomed along 60 mph RC boaters contended CB interference could dangerous Consequently spring 1969 W C Young California RC boater peti tioned FCC RC boat channels 72 MHz FCC responded releasing rule-making Docket #18733 November 1969 proposing RC boats cars share five aircraft channels 72 MHz As ex pected AMA strongly objected such joint usage because would endanger primary advantage gained 1966 safety RC airplanes June 1970 FCC countered second proposal version three chan nels would retained aircraft two non-aircraft two additional chan nels shared types models AMA objected cutting aircraft-only channels five three third final solution proposed adopted Becoming effective November 15 1971 reserved four channels RC aircraft-only use designated three shared channels Giving RC aircraft use seven channels boats cars three viable solution time Approval unanimous vote FCC Commis sioners AMA attorney Jerry Courtneys efforts working FCC obtaining previous legislative action greatly ap Charlie Siegfried seen plane 1947 Nats holding control box sole function control box send signals transmitter trunk car preciated RC aircraft modelers letter John Worth dated October 6 1971 Courtney stated A has deed discharged trust reposed aircraft modeler fraternity twice re versing stream proposed governmen tal action adverse interests air craft modelers Verbally assured us unusual time AMA membership 30000 compared few thousand national organizations RC boat car users AMAs large size prior experience FCC pro cedures helpful RC modelers instance representatives two organizations associated RC fraternity objected RC modelers use 72 MHz band Frequency Committee Chairman Ed Lorenz gratified FCCs defense AMA International Municipal Signal Association IMSA International Association Fire Chiefs IAFC proposed docket RC channels completely removed 72-76 band due possible interference emergency call box operation response FCC stated IMSA IAFC did present specific evidence harm ful interference adding Furthermore Commission un aware instances harmful interfer ence model craft operation other Commission services operating five shared frequencies presently avail able 72-76 MHz range over past five years consequently possibility increased interference fire radio other shared services considered minimal favorable response evidence AMA RCers carefully follow ing hard-earned regulations gained respect FCC its Fourth July 1989 61 AMA President CO Wright 1948 just before meeting FCC officials Washington DC Attending AMA addition Wright Willis Brown Russ Nichols Walt Good Left lineup RC Pattern models waiting daily qualifying line 1958 Nats held near Chicago Most planes equipped tuned-reed pulse-proportional controls Right Gordon Gabbert seen version Dale Roots Ascender model top Pattern ships competing 1958 Note low-wing Astro-Hog just left also very competitive airplane Left Three delta-configuration Pylon Racers 1958 Nats Weldon Smith pioneers delta racer Right Bob Wischers 2nd-place Scale plane looks like 1-19 actually rare Marine Corps version called OE-2 derived Cessna-i 72 Note typical ground-based transmitter left controlled WAG three-tube RX pulsing rudder three speeds Fox 19 engine Battle agency AMA de fended its RC frequency needs increased its stature Ed Lorenz now living Florida re minded AMA Frequency Com mittee helped raise unheard-of sum $10000 finance legal costs reach ing accommodation RC boat car users Donations came came both industry modelers 1974 FCC proposal five RC channels 27 MHz band allocated Citizen Band radio expansion signaled beginning Fifth Battle strug gle ended 1976 FCC issued Docket #20120 July 31 1974 proposing 27 MHz CB channels increased 22 45 cause huge increase number licensed CBers According FCC records number CBers five million creasing one-half million per month AMA Frequency Chairman John Strong committee concerned proposal reasonably Five new channels proposed CB use RC frequencies since FCC first sanctioned 1958 Although RC fliers moved 72 MHz 1960s 1970s some still using 27 MHz boat car operators ad dition toy RC market produced its less expensive units frequency cause vulner ability RC planes nearby CBers joint use five targeted 27 MHz frequen cies would quickly drive RCers out band AMA coun terproposed FCC five class C RC slots retained RC usage televi sion industry also opposed expan sion CB chan nels anticipating increased television inter ference harmonics CB sets combined efforts AMA Jerry Courtney hundreds letters AMA members FCC succeeded preserving five imperiled RC channels types RC use After several modi fications FCC 1975 1976 Docket #20 120 assigning CBers 17 new channels total 40 became effec tive January 1 1977 Some 12 years later five 27 MHz RC frequencies still use Sixth Battle obtain 80 channels RC Models1977-83 ink drying Docket #20 120 other events threatening RC aircraft use both 27 MHz 72 MHz channels Despite nominal victory 1977 docket ex plosive growth CB operation five 13 million between 1976 1978 practi cally eliminated safe use 27 MHz slots RC aircraft Most RCers driven seven 72 MHz frequencies Unfortunately channels becom ing increasingly cluttered other legal 62 Model Aviation blackboard shows status RC events qualifying days 1958 Nats near Chicago largest RC Nats staged up time 268 entries six categories users some areas country rapid up swing radio paging system usage 72 MHz eclipsing RC planes St Petersburg area Florida example three paging systems different RC spot similar situations ex isted other states Since RC channels assigned secondary priority usage no choice faced conflict except convert another RC channel free pagers RC group appealed regional FCC office explanation pager assigned RC spots FCC representative said dont al locate frequencies just process applica tions other words pager asked non-RC spot several no conflict RC fre quency would have occurred course FCC could easily have answered RC usage protected other us ers same frequency As early 1971 AMA spon sored FAI World Championship RC Pattern models near Philadelphia called regional FCC office request assist ance monitoring RC spectrum safety purposes during meet Though sympathetic request office too understaffed help Upon learning Hewlett-Packard company loaned us four late-model spectrum analyzers monitoring task FCC officer told Thats much better can just go ahead give call run serious interference Ill try help spectrum analyzer scopes meet showed 22 CR channels active intermittent illegal voice signals RC channels During contest simply delayed launch RC plane until scope showed clear channel tactic worked None 240 flights22 countries 60 planes participatedexpe rienced crashes due interfering signals didnt have call understaffed FCC office 1978 rapidly deteriorating accessi bility assigned RC channels spurred intensive effort AMA RC Fre quency Committee gain safer RC channels future assist ance Chairman John Strong attor neys Jerry Courtney Jack Smith committee drew up plan generating rule-making petition submitted FCC Little did realize time embarking six-year-long effort elusive exclusive channels1979 drafting rule-making petition FCC Frequency Committee planned focus its efforts 72-75 MHz band itially assuming truly exclusive chan nels available reasoned ob taining sufficient number channels 72-75 MHz band would obviate con flicts allowing us use clear channels avoid other occu July 1989 63 Close-up Vernon MacNabbs Citizen-Ship 465 MHz receiver Note aluminum base also loop antenna receiver measures 2 x 3 x 4 weighs 5 oz Its single tube superregenerative receiver using Sigma relay switch actuator escapement Gene Foxworthy Indianapolis IN won 1950 Nats 465 MHz gear Hoosier Hot Shot Note twin rudders wing slots tricycle landing geara very modern rig time NEW FEATURES ADDED! es Four Aircraft Setups Includes Seven Different Servo Configurations Individual Surface Travel Limits Centering Single Switch Presets Launch Speed Modes Full Trailing Edge Control Enhanced Mixing Functions Crow Landing Capability * User Selectable Cross Trim Capability Flap Stick Reversing Elevator Camber VTR * Automatic Selection High Ail Rudder Mixing Launch Landing Modes * New Feature Fully installed kit Control Systems Laboratories 238S Hillview Dr Milpitas CA 95035 408 946-4142 Aiztronics ami Module 75P registered trademarks Aictronics Inc ATRCSTM Advaneed Teehnolog Radio Control System Works standard FM/PPM Receivers AirtronicsTh PCM Receivers Converts Module 75P advanced computerized control system Elevator Camber % I//2V/ 0 070 100 Elevator Stick Position % pants Which channels clear ex pected vary different geographic ar eas depending local pager frequen cies Further planned request fre quency usage types RC models divide channels between aircraft surface craft very beginning After number committee meetings drafts proposal 32-page peti tion rule-making submitted FCC accepted January 8 1979 RM-3248 Review petition over following year involved constructive interplay tween Jack Smith behalf AMA Don Campbell FCC addition spokesman Smith AMA RC Frequency Committee others participated periodically Mike Gilbertson expert electronics engineer supplied answers numerous technical questions FCC staff Perhaps goal exclusive RC chan nels wouldnt elude us after strategy attaining hammered out AMA Frequency meetings supported Don Campbell FCC late 1979 seemed promising Since nor mal commercial channel spacing THE BEST FUSELAGE JIG EVER PERIOD Provides Solid Support Accurate Building Rugged Construction 7 Ply Aircraft Plywood Provides Lifetime Use Two Sizes Available Regular Fuselages Up 6 Wide Jumbo Fuselages Up 9 Wide Use Own Building Board Work Bench Base Mount Jig Station Uni-Strut Guide Rails Most Versatile Set-Up Contains Complete Hardware Instructions Including Uni-Strut Information Box 4 Standard Jig Stations 11795 Box 4 Jumbo Jig Stations 1995 TwoS ft long Guide Rails including mounting nuts 2195 20 kHz raster shift RC chan nels over 10 kHz ensure no RC channel would precisely commer cial channel Spacing channels 10 kHz intervals would far preferable dead especially capability newer narrow-band receivers After ing checked technical experts among committee members concept 10 kHz offset included updated 45page RM-3248 sent FCC September 1980 definition new channels truly exclusive because assigned FCC other user Still another round questions swers took place including briefing seven FCC Commissioners Fred Marks team late 1981 Bob Aberle became chairman AMA RC Frequency Committee 1981 happy Notice Proposed Rule Making last approved FCC May 1982 placed FCC ac tion chain comments parties AMA widely distributed contents new proposal RC industries hobby magazines national organizations cars boats AMA memberIVANS MAGIC GADGET protractor device used Ivan Kristensen accurately measure aileron elevator rudder throw takes guess work out trimming out airplane qualty tool complete instructions log book carrying case1795 PLUG-IN ADJUSTABLE STAB KIT last can optimize stab incidence best flight charac teristics pair glass filled nylon adjusters included provide micro screw adjustment smaller front tube Main tube aluminum matching phenolic sncket S695 Include $2 SOltem UPS esidents Add 6% Sales Tax GATOR RIC PRODUCTS 3713 Pompano Dr acola FL 32514 476-8639 ship Responses sources 99 percent favorable wont comment less percent neg ative responses received Following review comments re ceived FCC assembled final report order approving November 1982 Six years making 1982 FCC legislation milestone RC model ers awarded RC aircraft 50 channels RC boats cars receiving 30 frequency distribution expected use ful years come phase-in plan drawn up allow manufacturers users adapt new set frequencies between 1983 1991 first phase aircraft completed December 1987 final phase 50 channels scheduled 1991 What long significant effort culmi nating gratifying outcome Sixth Battle 40 years on-again off-again struggles FCC have Readers radio amateurs will have observed very little detail has de voted ham frequencies played such important role pioneering RC hobby still effective RC use PLUG-IN WING ADJUSTER KIT Four glass filled nylon brackets included key wing panels front rear allow accurately adjust panel straight flight Complete hardware & instructions1995 _ WING TUBE & SOCKETS Aluminum alloy tubing plug-in wings Included pair special slip-fit phenolic sorkets build wing structure Now size models 718 dia aS 895 ldiax2S 995 1diax311495 64 Model Aviation TAIBI 1/8-INCH3648 BALSA WOOD STIcKS 1/18-INCH3848 1/160111626 1116313207 1116x1/60611 1/I6o3/160913 1/1801/41015 1/1603/81317 1/161/21620 1/163/42128 3/32-INCH3848 3/323/320811 3/32 01/80913 3/32031161015 3/32 01/41316 3/3203/81419 3/32 01/21621 3/323/42431 Double Balsa Wood Prices Spruce Basswood Sticks 1/80 1/8 1/8 o 3116 1/80 1/4 1/8 0 318 1/801/3 1/80314 3/8-INCH3848 09113/803182737 11153/80 1/23041 13173/8o3144460 1621 17241/2-INCH3648 20331/2 0 1/23749 1/2 03145270 TRIANGULAR CUT BALSA 1/401/403624 3/8o3/8o3629 1/20 1/203637 3/4o3/4o3647 10103061 BALSA PLANKS 3/403036178 1x2o36184 103036230 104036303 202036230 203036329 204030464 3o3o36490 304030680 3/18-INCH3848 3/16031161317 3/180 1/41419 3/1803181621 3/160 1/21820 3/16 0 3142838 1/4-INCH3648 1/40 1/41621 1/403/81825 1/401/22129 1/403143142 B/i 8-INCH3848 9/160 5/162027 9/16 3182230 5/180 1/22736 5/16 3143952 BALSA SHEETS 1-INCH3848 1/160 12736 3/32013040 1/80 13344 3/16 13749 I/do 14157 3/8 0 19372 1/2 o 16588 2-INCH3648 1/32023040 1/160 23648 3/32 o 24154 1/8 024660 3/160 25472 1/4026384 3/80277103 3-INCH3848 1/32034053 1/16034358 3/32 35270 1/8036080 3/18 037295 1/40384112 5/1603103134 3/803130160 1/203150200 4-INCH3648 1/32046587 1/180473101 3/320482109 1/80495128 3/1604114151 1/404131193 3/804182271 1/202 113 150 1/204219325 BIRCH PLYWOOD 1/840120 12175 1/84012024350 1/64 012048700 1/64 a490482800 1/320601252 1/320120 12105 1/320 12024210 1/320 12049430 I/16o6o1252 1/180120 12108 1/18012024210 1/16o12040430 3/32o6o1291 3/320120 12163 3/32 012 0 24328 3/32 o12 0 48652 1/8o8o1289 1/8012012178 1/8012024356 1/8o12o49712 3116o6s1274 3/160120 12146 3/160120 24293 3/16 012o48585 1/40601274 1/40120 12146 1/4 012024293 1/4 012046585 3/80 120 12180 3/8 0 12 0 24360 318012048720 1/2 0120 12202 1/2 0120 24405 1/2 012048908 LITE PLYWOOD 1/901201256 1/80 12024112 1/8012048224 TAPERED TRAILING EDGE3648 1/80 1/22230 3/16 0 3/42940 1/40 I4255 5/16o 1/o4461 3/8o 15272 Superior Aircraft Materials 12020-G Centralla iian Gardens CalIfornia 90716 865-3220 Handling Charge -$500 $300 COD mum Order $2000 FOB Factory accept Peraonal checka COD fornia Recidenta add 6% Salea Tax today channels have coordi nated Amateur Radio Relay League Dick Jansson WD4FAB other RC hams over years RC channels li censed hams included summary follows Summary Comments1988 ac companying table summarizes ac quisitions changes RC frequen cies through confrontations negotia tions FCC over past 40 years retrospect frequency changes RC fliers over years due fact truly exclusive RC channels mercy other users numbers growing just rapidly needs rivals keep ing pace own 80 new RC channels literally ex clusive FCC has designated no other us ers RCers shouldnt vulnerable co-channel usersbecause shouldnt Adjacent non-RC channels will close 10 kHz possibly could cause trouble alternate RC chan nels provide fallback Fortunately sophisticated technology available implement required new narrow-band RC equipment German RC channels 35 MHz spaced 10 kHz intervals have use successfully almost 10 years Further recent reports dicate several companies already selling RC equipment meeting 1991 specifi cations reasonable cost future looks good wide frequency separation between RC Aircraft RC Surface Vehicle bands should prevent mutual interfer ence between two classes thank RC modelers RC dustry members national interna tional plane boat auto organizations have given support apprecia tion tremendous frequency acquisi tion effort AMA organization has carried out over past four decades expect present system RC-only channels workable hope 40 years RC frequency batfies FCC have reached end Weve quite lot practice deploying resources however need should arise Lets make certain value hard-earned frequencies asset understand importance using wisely care should serve us long long time come AMA Frequency Committee mem bers have contributed hours time toward acquisition RC channels deserve special thanks names follow AMA RC Frequency Committees 1946-1988 1946-1962 Walt GoodChairman MembersWillis Brown Warren Bartlett Clay Freese Ed Lorenz Howard McEntee Dick Schumacher William Stelmach 1963-1971 Ed LorenzChairman MembersWalt Good Maynard Hill Ver non MacNabb Howard McEntee John Phelps Jack Port Paul Runge 1972-1980 John StrongChairman MembersBob Aberle Jack Albrecht Walt Good Dick Jansson Fred Marks C Tor rey Williams 1981-1982 Bob AberleChairman MembersJack Albrecht Dave Brown Walt Good Bill Hershberger Dick Jans Continued page 157 Announcing thGQRBI7VERi Multi channel Nan dlaunch Competition* w Wingapan GlideriPlapa NEW LE1EL OF ORMANCE UHAZATD] 1JkYCH COMPETIOH 11PI NHV BE THE SAUE 1A * Sin@IJ uervoa up ConatruoMon HAS AX2D THE ORBITER EE 4061Eardvage / Llnkageg moluved OFFERS FL SPAN 1 REFLEZ JZFST Uhf THE LO1PESONI $aadlatampe Jar ear aew uatJeg Ow Newulefler IXOMD WZND 4F-J La Now Available $121230 Damson Roaa Bothell PtA 98021 206-776-8067 July 1989 65 DODGSON very smooth-running tail rotor unusually high degree control accuracy tail rotor drive system based 2mmdiameter steel drive shaft design has proved highly reliable Now shaft sup ported special brass tube tube needs lubricated initially over its entire length af ter installation drive system operates freely vibration requires no maintenance Magic Ranger brass tube set slot ted wood strip installed top fuselage boom open trainer version tube sus pended tail boom several supports main difference between open trainerconfiguration Magic fuselage-equipped Magic Ranger found tail boom canopy canopy assembled two halfshells fitted over radio equipment mechanical assembly secured side two knurled knobs complete servo sup port structure same both models tail boom Magic aluminum tube attached mechanical assembly us ing newly designed composite fixture solidly braced additional support tube Flexible landing gear supplied black stan dard although white now available op tion main rotor head control system System 88 virtually un changed Based control movements offset 450 system has proven outstand ingly effective has eliminated completely tendency model balloon dive flying forward fast speed new fea ture injection-molded servo structure As can see Magic sounds good its long blades tail boom should smooth capital S So much new stuff Its summer Get broken bird back together lets go fly BCNU RC Battle/Good Continued page 65 son Fred Marks John Strong C Torrey Williams 1983-1984 George MyersChairman MembersJack Albrecht Dave Brown Bill Hershberger John Lange Fred Marks Jim Oddino C Torrey Williams Al Watson ConsultantsBob Aberle Walt Good Dick Jansson 1985-1988 Fred MarksChairman MembersJack Albrecht Dave Brown Steve Helms Bill Hershberger Dave Hil senhoff George Myers Bob Novak Pete Waters Jim Oddino Warren Plohr George Steiner ConsultantsWalt Good Dick Jansson individual name cluded above listings has volved Frequency Committee since 1963 AMA president since became AMA ex ecutive director 1964 name John Worth John has longtime personal obses sion RC has contributed immeasur ably RC frequency story through executive capacity AMA Sorting through hundreds files preparing article Ive seen hand tying gether reporting RC Committees ef forts Thanks John being long-term contributing phantom member AMA RC Frequency Committee Pou du Ciel/Allison Continued page 71 mouflage lighter colors seen black-and-white photo such light grays blues Using artists airbrush opaque watercolors also called designers colors taped condenser paper over paper wing stab outlines cam ouflage patterns drawn method colors preshrinks covering operation fuselage bit trickier pattern used centered cowl cabin sections sides bottom sides left rightsort Scale model Ror schach inkblot shape painted three sets Id have extras mistakes repairs fuselage covered separate pieces sides lower sides upper cowl area lower cowl cabin roof Trial fit cabanes landing gear cabin side panels fuselage removing before covering fuselage pieces painted separately glued completed fuselage windshield added using RC-56 glue along edge cabin roof prepainted wind shield posts Glue rear edges windshield rear cabin posts before glu ing side panels posts did glue front bottom edge windshield top fuselage used Pactra enamel engine cylinders top cooling fins painted unit gloss black mix silver little cop per little dark gray dry brush lightly across cooling fins high lights edges fins giving cylin ders oily slightly rusted look takes exhausts get same treatment headbolts pushrods silver highlighting contrast Spark plugs rocker covers white Plug wires prop blades tires flat black dark gray MIAMA Pistachio Scale rules include three weight categories Category Iunder two grams Iltwo three grams III over three grams strategy try build lowest weight allowed par ticular category taking advantage close correlation between wing loading duration dont like ghost ships dont like empty calories either concen trate scale detail ie weight toward front end intention dazzling judges eye great en gine spinner gas cap etc barely notices paint job gets more transparent toward tail its lightweight rubdown registration numbers THE LEADER IN COMPETITION NEW THP DESIGN DIAPRICE 15 16 NEW PRO SERIES 3 II 1 NEW HIGH TECH AIRFOIL SECTION 10 TO 200/o INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 534 634 72833/,456 8334568 94566Io77 104566/7 106W8W 106EW 114677/o7/ol8 115W 116EW 1167 124W 125W 1256 1356 1456 1556 164/N 16678 RC PYLON RACING SERIES 500 DIA PITCHPRICE 75N 5N SERIES 400C 866T7/o7 977/,73/ W WIDE BLADE 0EW EXTRA WIDE N NARROW July 1989 157 PROPELLERS TAILORED HELICAL PITCH DEVELOPEDTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW PITCH THP 677/o8 677/6 67 678
Edition: Model Aviation - 1989/07
Page Numbers: 60, 61, 62, 63, 64, 65, 157
IN ITS FOURTH battle Federal Communications Commission 196971 AMA forced defend 72 MHz RC aircraft-only channels against RC boat car users requesting use RC aircraft fliers experienced consid erable interference Citizen Band radio users earlier 27 MHz channels moti vating AMAs request FCC authori zation 72 MHz frequencies five new 72 MHz channels AMA acquired 1966 well received RC modelers outset continued 1969 RC airplane competition growing rapidly safely However radio-controlled boats cars authorized use 27 MHz chan nels beginning invade 72 MHz RC aircraft-only channels least some intrusion other RC branches Top Walt Bill Good during Guft flight 1947 Nats Minneapolis Note smail transmitter down 5 watts Theyre still 50 MHz ham frequency Harry Geyer left calling time judge Ken Carter kneeling right Above left Jim Walkers plane 30-watt 50 MHz ham transmitter top boxes transmitter multicontrol unit Pozipo sequence control time rudder elevator engine Jim photo won 1946 Nate RC event people picture iden tified Above right Charlie Siegfrieds 110-watt transmitter just about fills trunk car operated 50 MHz ham frequency 60 Model Aviation Vernon MacNabb seen 1950 holding first commercial license-free RC transmitters operating 465 MHz Purdue-shined fellow right holding 465 MHz receiver lad left identified Note remarkably small size unit tiny dipole antenna caused same problem aggra vated RC fliers few years earlier interference CB operators Califor nia RC boat competitions held over 20 boating clubs nearly 700 members CB voice transmitters disturbing boat controls 27 MHz Since some boats weighed much eight pounds zoomed along 60 mph RC boaters contended CB interference could dangerous Consequently spring 1969 W C Young California RC boater peti tioned FCC RC boat channels 72 MHz FCC responded releasing rule-making Docket #18733 November 1969 proposing RC boats cars share five aircraft channels 72 MHz As ex pected AMA strongly objected such joint usage because would endanger primary advantage gained 1966 safety RC airplanes June 1970 FCC countered second proposal version three chan nels would retained aircraft two non-aircraft two additional chan nels shared types models AMA objected cutting aircraft-only channels five three third final solution proposed adopted Becoming effective November 15 1971 reserved four channels RC aircraft-only use designated three shared channels Giving RC aircraft use seven channels boats cars three viable solution time Approval unanimous vote FCC Commis sioners AMA attorney Jerry Courtneys efforts working FCC obtaining previous legislative action greatly ap Charlie Siegfried seen plane 1947 Nats holding control box sole function control box send signals transmitter trunk car preciated RC aircraft modelers letter John Worth dated October 6 1971 Courtney stated A has deed discharged trust reposed aircraft modeler fraternity twice re versing stream proposed governmen tal action adverse interests air craft modelers Verbally assured us unusual time AMA membership 30000 compared few thousand national organizations RC boat car users AMAs large size prior experience FCC pro cedures helpful RC modelers instance representatives two organizations associated RC fraternity objected RC modelers use 72 MHz band Frequency Committee Chairman Ed Lorenz gratified FCCs defense AMA International Municipal Signal Association IMSA International Association Fire Chiefs IAFC proposed docket RC channels completely removed 72-76 band due possible interference emergency call box operation response FCC stated IMSA IAFC did present specific evidence harm ful interference adding Furthermore Commission un aware instances harmful interfer ence model craft operation other Commission services operating five shared frequencies presently avail able 72-76 MHz range over past five years consequently possibility increased interference fire radio other shared services considered minimal favorable response evidence AMA RCers carefully follow ing hard-earned regulations gained respect FCC its Fourth July 1989 61 AMA President CO Wright 1948 just before meeting FCC officials Washington DC Attending AMA addition Wright Willis Brown Russ Nichols Walt Good Left lineup RC Pattern models waiting daily qualifying line 1958 Nats held near Chicago Most planes equipped tuned-reed pulse-proportional controls Right Gordon Gabbert seen version Dale Roots Ascender model top Pattern ships competing 1958 Note low-wing Astro-Hog just left also very competitive airplane Left Three delta-configuration Pylon Racers 1958 Nats Weldon Smith pioneers delta racer Right Bob Wischers 2nd-place Scale plane looks like 1-19 actually rare Marine Corps version called OE-2 derived Cessna-i 72 Note typical ground-based transmitter left controlled WAG three-tube RX pulsing rudder three speeds Fox 19 engine Battle agency AMA de fended its RC frequency needs increased its stature Ed Lorenz now living Florida re minded AMA Frequency Com mittee helped raise unheard-of sum $10000 finance legal costs reach ing accommodation RC boat car users Donations came came both industry modelers 1974 FCC proposal five RC channels 27 MHz band allocated Citizen Band radio expansion signaled beginning Fifth Battle strug gle ended 1976 FCC issued Docket #20120 July 31 1974 proposing 27 MHz CB channels increased 22 45 cause huge increase number licensed CBers According FCC records number CBers five million creasing one-half million per month AMA Frequency Chairman John Strong committee concerned proposal reasonably Five new channels proposed CB use RC frequencies since FCC first sanctioned 1958 Although RC fliers moved 72 MHz 1960s 1970s some still using 27 MHz boat car operators ad dition toy RC market produced its less expensive units frequency cause vulner ability RC planes nearby CBers joint use five targeted 27 MHz frequen cies would quickly drive RCers out band AMA coun terproposed FCC five class C RC slots retained RC usage televi sion industry also opposed expan sion CB chan nels anticipating increased television inter ference harmonics CB sets combined efforts AMA Jerry Courtney hundreds letters AMA members FCC succeeded preserving five imperiled RC channels types RC use After several modi fications FCC 1975 1976 Docket #20 120 assigning CBers 17 new channels total 40 became effec tive January 1 1977 Some 12 years later five 27 MHz RC frequencies still use Sixth Battle obtain 80 channels RC Models1977-83 ink drying Docket #20 120 other events threatening RC aircraft use both 27 MHz 72 MHz channels Despite nominal victory 1977 docket ex plosive growth CB operation five 13 million between 1976 1978 practi cally eliminated safe use 27 MHz slots RC aircraft Most RCers driven seven 72 MHz frequencies Unfortunately channels becom ing increasingly cluttered other legal 62 Model Aviation blackboard shows status RC events qualifying days 1958 Nats near Chicago largest RC Nats staged up time 268 entries six categories users some areas country rapid up swing radio paging system usage 72 MHz eclipsing RC planes St Petersburg area Florida example three paging systems different RC spot similar situations ex isted other states Since RC channels assigned secondary priority usage no choice faced conflict except convert another RC channel free pagers RC group appealed regional FCC office explanation pager assigned RC spots FCC representative said dont al locate frequencies just process applica tions other words pager asked non-RC spot several no conflict RC fre quency would have occurred course FCC could easily have answered RC usage protected other us ers same frequency As early 1971 AMA spon sored FAI World Championship RC Pattern models near Philadelphia called regional FCC office request assist ance monitoring RC spectrum safety purposes during meet Though sympathetic request office too understaffed help Upon learning Hewlett-Packard company loaned us four late-model spectrum analyzers monitoring task FCC officer told Thats much better can just go ahead give call run serious interference Ill try help spectrum analyzer scopes meet showed 22 CR channels active intermittent illegal voice signals RC channels During contest simply delayed launch RC plane until scope showed clear channel tactic worked None 240 flights22 countries 60 planes participatedexpe rienced crashes due interfering signals didnt have call understaffed FCC office 1978 rapidly deteriorating accessi bility assigned RC channels spurred intensive effort AMA RC Fre quency Committee gain safer RC channels future assist ance Chairman John Strong attor neys Jerry Courtney Jack Smith committee drew up plan generating rule-making petition submitted FCC Little did realize time embarking six-year-long effort elusive exclusive channels1979 drafting rule-making petition FCC Frequency Committee planned focus its efforts 72-75 MHz band itially assuming truly exclusive chan nels available reasoned ob taining sufficient number channels 72-75 MHz band would obviate con flicts allowing us use clear channels avoid other occu July 1989 63 Close-up Vernon MacNabbs Citizen-Ship 465 MHz receiver Note aluminum base also loop antenna receiver measures 2 x 3 x 4 weighs 5 oz Its single tube superregenerative receiver using Sigma relay switch actuator escapement Gene Foxworthy Indianapolis IN won 1950 Nats 465 MHz gear Hoosier Hot Shot Note twin rudders wing slots tricycle landing geara very modern rig time NEW FEATURES ADDED! es Four Aircraft Setups Includes Seven Different Servo Configurations Individual Surface Travel Limits Centering Single Switch Presets Launch Speed Modes Full Trailing Edge Control Enhanced Mixing Functions Crow Landing Capability * User Selectable Cross Trim Capability Flap Stick Reversing Elevator Camber VTR * Automatic Selection High Ail Rudder Mixing Launch Landing Modes * New Feature Fully installed kit Control Systems Laboratories 238S Hillview Dr Milpitas CA 95035 408 946-4142 Aiztronics ami Module 75P registered trademarks Aictronics Inc ATRCSTM Advaneed Teehnolog Radio Control System Works standard FM/PPM Receivers AirtronicsTh PCM Receivers Converts Module 75P advanced computerized control system Elevator Camber % I//2V/ 0 070 100 Elevator Stick Position % pants Which channels clear ex pected vary different geographic ar eas depending local pager frequen cies Further planned request fre quency usage types RC models divide channels between aircraft surface craft very beginning After number committee meetings drafts proposal 32-page peti tion rule-making submitted FCC accepted January 8 1979 RM-3248 Review petition over following year involved constructive interplay tween Jack Smith behalf AMA Don Campbell FCC addition spokesman Smith AMA RC Frequency Committee others participated periodically Mike Gilbertson expert electronics engineer supplied answers numerous technical questions FCC staff Perhaps goal exclusive RC chan nels wouldnt elude us after strategy attaining hammered out AMA Frequency meetings supported Don Campbell FCC late 1979 seemed promising Since nor mal commercial channel spacing THE BEST FUSELAGE JIG EVER PERIOD Provides Solid Support Accurate Building Rugged Construction 7 Ply Aircraft Plywood Provides Lifetime Use Two Sizes Available Regular Fuselages Up 6 Wide Jumbo Fuselages Up 9 Wide Use Own Building Board Work Bench Base Mount Jig Station Uni-Strut Guide Rails Most Versatile Set-Up Contains Complete Hardware Instructions Including Uni-Strut Information Box 4 Standard Jig Stations 11795 Box 4 Jumbo Jig Stations 1995 TwoS ft long Guide Rails including mounting nuts 2195 20 kHz raster shift RC chan nels over 10 kHz ensure no RC channel would precisely commer cial channel Spacing channels 10 kHz intervals would far preferable dead especially capability newer narrow-band receivers After ing checked technical experts among committee members concept 10 kHz offset included updated 45page RM-3248 sent FCC September 1980 definition new channels truly exclusive because assigned FCC other user Still another round questions swers took place including briefing seven FCC Commissioners Fred Marks team late 1981 Bob Aberle became chairman AMA RC Frequency Committee 1981 happy Notice Proposed Rule Making last approved FCC May 1982 placed FCC ac tion chain comments parties AMA widely distributed contents new proposal RC industries hobby magazines national organizations cars boats AMA memberIVANS MAGIC GADGET protractor device used Ivan Kristensen accurately measure aileron elevator rudder throw takes guess work out trimming out airplane qualty tool complete instructions log book carrying case1795 PLUG-IN ADJUSTABLE STAB KIT last can optimize stab incidence best flight charac teristics pair glass filled nylon adjusters included provide micro screw adjustment smaller front tube Main tube aluminum matching phenolic sncket S695 Include $2 SOltem UPS esidents Add 6% Sales Tax GATOR RIC PRODUCTS 3713 Pompano Dr acola FL 32514 476-8639 ship Responses sources 99 percent favorable wont comment less percent neg ative responses received Following review comments re ceived FCC assembled final report order approving November 1982 Six years making 1982 FCC legislation milestone RC model ers awarded RC aircraft 50 channels RC boats cars receiving 30 frequency distribution expected use ful years come phase-in plan drawn up allow manufacturers users adapt new set frequencies between 1983 1991 first phase aircraft completed December 1987 final phase 50 channels scheduled 1991 What long significant effort culmi nating gratifying outcome Sixth Battle 40 years on-again off-again struggles FCC have Readers radio amateurs will have observed very little detail has de voted ham frequencies played such important role pioneering RC hobby still effective RC use PLUG-IN WING ADJUSTER KIT Four glass filled nylon brackets included key wing panels front rear allow accurately adjust panel straight flight Complete hardware & instructions1995 _ WING TUBE & SOCKETS Aluminum alloy tubing plug-in wings Included pair special slip-fit phenolic sorkets build wing structure Now size models 718 dia aS 895 ldiax2S 995 1diax311495 64 Model Aviation TAIBI 1/8-INCH3648 BALSA WOOD STIcKS 1/18-INCH3848 1/160111626 1116313207 1116x1/60611 1/I6o3/160913 1/1801/41015 1/1603/81317 1/161/21620 1/163/42128 3/32-INCH3848 3/323/320811 3/32 01/80913 3/32031161015 3/32 01/41316 3/3203/81419 3/32 01/21621 3/323/42431 Double Balsa Wood Prices Spruce Basswood Sticks 1/80 1/8 1/8 o 3116 1/80 1/4 1/8 0 318 1/801/3 1/80314 3/8-INCH3848 09113/803182737 11153/80 1/23041 13173/8o3144460 1621 17241/2-INCH3648 20331/2 0 1/23749 1/2 03145270 TRIANGULAR CUT BALSA 1/401/403624 3/8o3/8o3629 1/20 1/203637 3/4o3/4o3647 10103061 BALSA PLANKS 3/403036178 1x2o36184 103036230 104036303 202036230 203036329 204030464 3o3o36490 304030680 3/18-INCH3848 3/16031161317 3/180 1/41419 3/1803181621 3/160 1/21820 3/16 0 3142838 1/4-INCH3648 1/40 1/41621 1/403/81825 1/401/22129 1/403143142 B/i 8-INCH3848 9/160 5/162027 9/16 3182230 5/180 1/22736 5/16 3143952 BALSA SHEETS 1-INCH3848 1/160 12736 3/32013040 1/80 13344 3/16 13749 I/do 14157 3/8 0 19372 1/2 o 16588 2-INCH3648 1/32023040 1/160 23648 3/32 o 24154 1/8 024660 3/160 25472 1/4026384 3/80277103 3-INCH3848 1/32034053 1/16034358 3/32 35270 1/8036080 3/18 037295 1/40384112 5/1603103134 3/803130160 1/203150200 4-INCH3648 1/32046587 1/180473101 3/320482109 1/80495128 3/1604114151 1/404131193 3/804182271 1/202 113 150 1/204219325 BIRCH PLYWOOD 1/840120 12175 1/84012024350 1/64 012048700 1/64 a490482800 1/320601252 1/320120 12105 1/320 12024210 1/320 12049430 I/16o6o1252 1/180120 12108 1/18012024210 1/16o12040430 3/32o6o1291 3/320120 12163 3/32 012 0 24328 3/32 o12 0 48652 1/8o8o1289 1/8012012178 1/8012024356 1/8o12o49712 3116o6s1274 3/160120 12146 3/160120 24293 3/16 012o48585 1/40601274 1/40120 12146 1/4 012024293 1/4 012046585 3/80 120 12180 3/8 0 12 0 24360 318012048720 1/2 0120 12202 1/2 0120 24405 1/2 012048908 LITE PLYWOOD 1/901201256 1/80 12024112 1/8012048224 TAPERED TRAILING EDGE3648 1/80 1/22230 3/16 0 3/42940 1/40 I4255 5/16o 1/o4461 3/8o 15272 Superior Aircraft Materials 12020-G Centralla iian Gardens CalIfornia 90716 865-3220 Handling Charge -$500 $300 COD mum Order $2000 FOB Factory accept Peraonal checka COD fornia Recidenta add 6% Salea Tax today channels have coordi nated Amateur Radio Relay League Dick Jansson WD4FAB other RC hams over years RC channels li censed hams included summary follows Summary Comments1988 ac companying table summarizes ac quisitions changes RC frequen cies through confrontations negotia tions FCC over past 40 years retrospect frequency changes RC fliers over years due fact truly exclusive RC channels mercy other users numbers growing just rapidly needs rivals keep ing pace own 80 new RC channels literally ex clusive FCC has designated no other us ers RCers shouldnt vulnerable co-channel usersbecause shouldnt Adjacent non-RC channels will close 10 kHz possibly could cause trouble alternate RC chan nels provide fallback Fortunately sophisticated technology available implement required new narrow-band RC equipment German RC channels 35 MHz spaced 10 kHz intervals have use successfully almost 10 years Further recent reports dicate several companies already selling RC equipment meeting 1991 specifi cations reasonable cost future looks good wide frequency separation between RC Aircraft RC Surface Vehicle bands should prevent mutual interfer ence between two classes thank RC modelers RC dustry members national interna tional plane boat auto organizations have given support apprecia tion tremendous frequency acquisi tion effort AMA organization has carried out over past four decades expect present system RC-only channels workable hope 40 years RC frequency batfies FCC have reached end Weve quite lot practice deploying resources however need should arise Lets make certain value hard-earned frequencies asset understand importance using wisely care should serve us long long time come AMA Frequency Committee mem bers have contributed hours time toward acquisition RC channels deserve special thanks names follow AMA RC Frequency Committees 1946-1988 1946-1962 Walt GoodChairman MembersWillis Brown Warren Bartlett Clay Freese Ed Lorenz Howard McEntee Dick Schumacher William Stelmach 1963-1971 Ed LorenzChairman MembersWalt Good Maynard Hill Ver non MacNabb Howard McEntee John Phelps Jack Port Paul Runge 1972-1980 John StrongChairman MembersBob Aberle Jack Albrecht Walt Good Dick Jansson Fred Marks C Tor rey Williams 1981-1982 Bob AberleChairman MembersJack Albrecht Dave Brown Walt Good Bill Hershberger Dick Jans Continued page 157 Announcing thGQRBI7VERi Multi channel Nan dlaunch Competition* w Wingapan GlideriPlapa NEW LE1EL OF ORMANCE UHAZATD] 1JkYCH COMPETIOH 11PI NHV BE THE SAUE 1A * Sin@IJ uervoa up ConatruoMon HAS AX2D THE ORBITER EE 4061Eardvage / Llnkageg moluved OFFERS FL SPAN 1 REFLEZ JZFST Uhf THE LO1PESONI $aadlatampe Jar ear aew uatJeg Ow Newulefler IXOMD WZND 4F-J La Now Available $121230 Damson Roaa Bothell PtA 98021 206-776-8067 July 1989 65 DODGSON very smooth-running tail rotor unusually high degree control accuracy tail rotor drive system based 2mmdiameter steel drive shaft design has proved highly reliable Now shaft sup ported special brass tube tube needs lubricated initially over its entire length af ter installation drive system operates freely vibration requires no maintenance Magic Ranger brass tube set slot ted wood strip installed top fuselage boom open trainer version tube sus pended tail boom several supports main difference between open trainerconfiguration Magic fuselage-equipped Magic Ranger found tail boom canopy canopy assembled two halfshells fitted over radio equipment mechanical assembly secured side two knurled knobs complete servo sup port structure same both models tail boom Magic aluminum tube attached mechanical assembly us ing newly designed composite fixture solidly braced additional support tube Flexible landing gear supplied black stan dard although white now available op tion main rotor head control system System 88 virtually un changed Based control movements offset 450 system has proven outstand ingly effective has eliminated completely tendency model balloon dive flying forward fast speed new fea ture injection-molded servo structure As can see Magic sounds good its long blades tail boom should smooth capital S So much new stuff Its summer Get broken bird back together lets go fly BCNU RC Battle/Good Continued page 65 son Fred Marks John Strong C Torrey Williams 1983-1984 George MyersChairman MembersJack Albrecht Dave Brown Bill Hershberger John Lange Fred Marks Jim Oddino C Torrey Williams Al Watson ConsultantsBob Aberle Walt Good Dick Jansson 1985-1988 Fred MarksChairman MembersJack Albrecht Dave Brown Steve Helms Bill Hershberger Dave Hil senhoff George Myers Bob Novak Pete Waters Jim Oddino Warren Plohr George Steiner ConsultantsWalt Good Dick Jansson individual name cluded above listings has volved Frequency Committee since 1963 AMA president since became AMA ex ecutive director 1964 name John Worth John has longtime personal obses sion RC has contributed immeasur ably RC frequency story through executive capacity AMA Sorting through hundreds files preparing article Ive seen hand tying gether reporting RC Committees ef forts Thanks John being long-term contributing phantom member AMA RC Frequency Committee Pou du Ciel/Allison Continued page 71 mouflage lighter colors seen black-and-white photo such light grays blues Using artists airbrush opaque watercolors also called designers colors taped condenser paper over paper wing stab outlines cam ouflage patterns drawn method colors preshrinks covering operation fuselage bit trickier pattern used centered cowl cabin sections sides bottom sides left rightsort Scale model Ror schach inkblot shape painted three sets Id have extras mistakes repairs fuselage covered separate pieces sides lower sides upper cowl area lower cowl cabin roof Trial fit cabanes landing gear cabin side panels fuselage removing before covering fuselage pieces painted separately glued completed fuselage windshield added using RC-56 glue along edge cabin roof prepainted wind shield posts Glue rear edges windshield rear cabin posts before glu ing side panels posts did glue front bottom edge windshield top fuselage used Pactra enamel engine cylinders top cooling fins painted unit gloss black mix silver little cop per little dark gray dry brush lightly across cooling fins high lights edges fins giving cylin ders oily slightly rusted look takes exhausts get same treatment headbolts pushrods silver highlighting contrast Spark plugs rocker covers white Plug wires prop blades tires flat black dark gray MIAMA Pistachio Scale rules include three weight categories Category Iunder two grams Iltwo three grams III over three grams strategy try build lowest weight allowed par ticular category taking advantage close correlation between wing loading duration dont like ghost ships dont like empty calories either concen trate scale detail ie weight toward front end intention dazzling judges eye great en gine spinner gas cap etc barely notices paint job gets more transparent toward tail its lightweight rubdown registration numbers THE LEADER IN COMPETITION NEW THP DESIGN DIAPRICE 15 16 NEW PRO SERIES 3 II 1 NEW HIGH TECH AIRFOIL SECTION 10 TO 200/o INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 534 634 72833/,456 8334568 94566Io77 104566/7 106W8W 106EW 114677/o7/ol8 115W 116EW 1167 124W 125W 1256 1356 1456 1556 164/N 16678 RC PYLON RACING SERIES 500 DIA PITCHPRICE 75N 5N SERIES 400C 866T7/o7 977/,73/ W WIDE BLADE 0EW EXTRA WIDE N NARROW July 1989 157 PROPELLERS TAILORED HELICAL PITCH DEVELOPEDTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW PITCH THP 677/o8 677/6 67 678
Edition: Model Aviation - 1989/07
Page Numbers: 60, 61, 62, 63, 64, 65, 157
IN ITS FOURTH battle Federal Communications Commission 196971 AMA forced defend 72 MHz RC aircraft-only channels against RC boat car users requesting use RC aircraft fliers experienced consid erable interference Citizen Band radio users earlier 27 MHz channels moti vating AMAs request FCC authori zation 72 MHz frequencies five new 72 MHz channels AMA acquired 1966 well received RC modelers outset continued 1969 RC airplane competition growing rapidly safely However radio-controlled boats cars authorized use 27 MHz chan nels beginning invade 72 MHz RC aircraft-only channels least some intrusion other RC branches Top Walt Bill Good during Guft flight 1947 Nats Minneapolis Note smail transmitter down 5 watts Theyre still 50 MHz ham frequency Harry Geyer left calling time judge Ken Carter kneeling right Above left Jim Walkers plane 30-watt 50 MHz ham transmitter top boxes transmitter multicontrol unit Pozipo sequence control time rudder elevator engine Jim photo won 1946 Nate RC event people picture iden tified Above right Charlie Siegfrieds 110-watt transmitter just about fills trunk car operated 50 MHz ham frequency 60 Model Aviation Vernon MacNabb seen 1950 holding first commercial license-free RC transmitters operating 465 MHz Purdue-shined fellow right holding 465 MHz receiver lad left identified Note remarkably small size unit tiny dipole antenna caused same problem aggra vated RC fliers few years earlier interference CB operators Califor nia RC boat competitions held over 20 boating clubs nearly 700 members CB voice transmitters disturbing boat controls 27 MHz Since some boats weighed much eight pounds zoomed along 60 mph RC boaters contended CB interference could dangerous Consequently spring 1969 W C Young California RC boater peti tioned FCC RC boat channels 72 MHz FCC responded releasing rule-making Docket #18733 November 1969 proposing RC boats cars share five aircraft channels 72 MHz As ex pected AMA strongly objected such joint usage because would endanger primary advantage gained 1966 safety RC airplanes June 1970 FCC countered second proposal version three chan nels would retained aircraft two non-aircraft two additional chan nels shared types models AMA objected cutting aircraft-only channels five three third final solution proposed adopted Becoming effective November 15 1971 reserved four channels RC aircraft-only use designated three shared channels Giving RC aircraft use seven channels boats cars three viable solution time Approval unanimous vote FCC Commis sioners AMA attorney Jerry Courtneys efforts working FCC obtaining previous legislative action greatly ap Charlie Siegfried seen plane 1947 Nats holding control box sole function control box send signals transmitter trunk car preciated RC aircraft modelers letter John Worth dated October 6 1971 Courtney stated A has deed discharged trust reposed aircraft modeler fraternity twice re versing stream proposed governmen tal action adverse interests air craft modelers Verbally assured us unusual time AMA membership 30000 compared few thousand national organizations RC boat car users AMAs large size prior experience FCC pro cedures helpful RC modelers instance representatives two organizations associated RC fraternity objected RC modelers use 72 MHz band Frequency Committee Chairman Ed Lorenz gratified FCCs defense AMA International Municipal Signal Association IMSA International Association Fire Chiefs IAFC proposed docket RC channels completely removed 72-76 band due possible interference emergency call box operation response FCC stated IMSA IAFC did present specific evidence harm ful interference adding Furthermore Commission un aware instances harmful interfer ence model craft operation other Commission services operating five shared frequencies presently avail able 72-76 MHz range over past five years consequently possibility increased interference fire radio other shared services considered minimal favorable response evidence AMA RCers carefully follow ing hard-earned regulations gained respect FCC its Fourth July 1989 61 AMA President CO Wright 1948 just before meeting FCC officials Washington DC Attending AMA addition Wright Willis Brown Russ Nichols Walt Good Left lineup RC Pattern models waiting daily qualifying line 1958 Nats held near Chicago Most planes equipped tuned-reed pulse-proportional controls Right Gordon Gabbert seen version Dale Roots Ascender model top Pattern ships competing 1958 Note low-wing Astro-Hog just left also very competitive airplane Left Three delta-configuration Pylon Racers 1958 Nats Weldon Smith pioneers delta racer Right Bob Wischers 2nd-place Scale plane looks like 1-19 actually rare Marine Corps version called OE-2 derived Cessna-i 72 Note typical ground-based transmitter left controlled WAG three-tube RX pulsing rudder three speeds Fox 19 engine Battle agency AMA de fended its RC frequency needs increased its stature Ed Lorenz now living Florida re minded AMA Frequency Com mittee helped raise unheard-of sum $10000 finance legal costs reach ing accommodation RC boat car users Donations came came both industry modelers 1974 FCC proposal five RC channels 27 MHz band allocated Citizen Band radio expansion signaled beginning Fifth Battle strug gle ended 1976 FCC issued Docket #20120 July 31 1974 proposing 27 MHz CB channels increased 22 45 cause huge increase number licensed CBers According FCC records number CBers five million creasing one-half million per month AMA Frequency Chairman John Strong committee concerned proposal reasonably Five new channels proposed CB use RC frequencies since FCC first sanctioned 1958 Although RC fliers moved 72 MHz 1960s 1970s some still using 27 MHz boat car operators ad dition toy RC market produced its less expensive units frequency cause vulner ability RC planes nearby CBers joint use five targeted 27 MHz frequen cies would quickly drive RCers out band AMA coun terproposed FCC five class C RC slots retained RC usage televi sion industry also opposed expan sion CB chan nels anticipating increased television inter ference harmonics CB sets combined efforts AMA Jerry Courtney hundreds letters AMA members FCC succeeded preserving five imperiled RC channels types RC use After several modi fications FCC 1975 1976 Docket #20 120 assigning CBers 17 new channels total 40 became effec tive January 1 1977 Some 12 years later five 27 MHz RC frequencies still use Sixth Battle obtain 80 channels RC Models1977-83 ink drying Docket #20 120 other events threatening RC aircraft use both 27 MHz 72 MHz channels Despite nominal victory 1977 docket ex plosive growth CB operation five 13 million between 1976 1978 practi cally eliminated safe use 27 MHz slots RC aircraft Most RCers driven seven 72 MHz frequencies Unfortunately channels becom ing increasingly cluttered other legal 62 Model Aviation blackboard shows status RC events qualifying days 1958 Nats near Chicago largest RC Nats staged up time 268 entries six categories users some areas country rapid up swing radio paging system usage 72 MHz eclipsing RC planes St Petersburg area Florida example three paging systems different RC spot similar situations ex isted other states Since RC channels assigned secondary priority usage no choice faced conflict except convert another RC channel free pagers RC group appealed regional FCC office explanation pager assigned RC spots FCC representative said dont al locate frequencies just process applica tions other words pager asked non-RC spot several no conflict RC fre quency would have occurred course FCC could easily have answered RC usage protected other us ers same frequency As early 1971 AMA spon sored FAI World Championship RC Pattern models near Philadelphia called regional FCC office request assist ance monitoring RC spectrum safety purposes during meet Though sympathetic request office too understaffed help Upon learning Hewlett-Packard company loaned us four late-model spectrum analyzers monitoring task FCC officer told Thats much better can just go ahead give call run serious interference Ill try help spectrum analyzer scopes meet showed 22 CR channels active intermittent illegal voice signals RC channels During contest simply delayed launch RC plane until scope showed clear channel tactic worked None 240 flights22 countries 60 planes participatedexpe rienced crashes due interfering signals didnt have call understaffed FCC office 1978 rapidly deteriorating accessi bility assigned RC channels spurred intensive effort AMA RC Fre quency Committee gain safer RC channels future assist ance Chairman John Strong attor neys Jerry Courtney Jack Smith committee drew up plan generating rule-making petition submitted FCC Little did realize time embarking six-year-long effort elusive exclusive channels1979 drafting rule-making petition FCC Frequency Committee planned focus its efforts 72-75 MHz band itially assuming truly exclusive chan nels available reasoned ob taining sufficient number channels 72-75 MHz band would obviate con flicts allowing us use clear channels avoid other occu July 1989 63 Close-up Vernon MacNabbs Citizen-Ship 465 MHz receiver Note aluminum base also loop antenna receiver measures 2 x 3 x 4 weighs 5 oz Its single tube superregenerative receiver using Sigma relay switch actuator escapement Gene Foxworthy Indianapolis IN won 1950 Nats 465 MHz gear Hoosier Hot Shot Note twin rudders wing slots tricycle landing geara very modern rig time NEW FEATURES ADDED! es Four Aircraft Setups Includes Seven Different Servo Configurations Individual Surface Travel Limits Centering Single Switch Presets Launch Speed Modes Full Trailing Edge Control Enhanced Mixing Functions Crow Landing Capability * User Selectable Cross Trim Capability Flap Stick Reversing Elevator Camber VTR * Automatic Selection High Ail Rudder Mixing Launch Landing Modes * New Feature Fully installed kit Control Systems Laboratories 238S Hillview Dr Milpitas CA 95035 408 946-4142 Aiztronics ami Module 75P registered trademarks Aictronics Inc ATRCSTM Advaneed Teehnolog Radio Control System Works standard FM/PPM Receivers AirtronicsTh PCM Receivers Converts Module 75P advanced computerized control system Elevator Camber % I//2V/ 0 070 100 Elevator Stick Position % pants Which channels clear ex pected vary different geographic ar eas depending local pager frequen cies Further planned request fre quency usage types RC models divide channels between aircraft surface craft very beginning After number committee meetings drafts proposal 32-page peti tion rule-making submitted FCC accepted January 8 1979 RM-3248 Review petition over following year involved constructive interplay tween Jack Smith behalf AMA Don Campbell FCC addition spokesman Smith AMA RC Frequency Committee others participated periodically Mike Gilbertson expert electronics engineer supplied answers numerous technical questions FCC staff Perhaps goal exclusive RC chan nels wouldnt elude us after strategy attaining hammered out AMA Frequency meetings supported Don Campbell FCC late 1979 seemed promising Since nor mal commercial channel spacing THE BEST FUSELAGE JIG EVER PERIOD Provides Solid Support Accurate Building Rugged Construction 7 Ply Aircraft Plywood Provides Lifetime Use Two Sizes Available Regular Fuselages Up 6 Wide Jumbo Fuselages Up 9 Wide Use Own Building Board Work Bench Base Mount Jig Station Uni-Strut Guide Rails Most Versatile Set-Up Contains Complete Hardware Instructions Including Uni-Strut Information Box 4 Standard Jig Stations 11795 Box 4 Jumbo Jig Stations 1995 TwoS ft long Guide Rails including mounting nuts 2195 20 kHz raster shift RC chan nels over 10 kHz ensure no RC channel would precisely commer cial channel Spacing channels 10 kHz intervals would far preferable dead especially capability newer narrow-band receivers After ing checked technical experts among committee members concept 10 kHz offset included updated 45page RM-3248 sent FCC September 1980 definition new channels truly exclusive because assigned FCC other user Still another round questions swers took place including briefing seven FCC Commissioners Fred Marks team late 1981 Bob Aberle became chairman AMA RC Frequency Committee 1981 happy Notice Proposed Rule Making last approved FCC May 1982 placed FCC ac tion chain comments parties AMA widely distributed contents new proposal RC industries hobby magazines national organizations cars boats AMA memberIVANS MAGIC GADGET protractor device used Ivan Kristensen accurately measure aileron elevator rudder throw takes guess work out trimming out airplane qualty tool complete instructions log book carrying case1795 PLUG-IN ADJUSTABLE STAB KIT last can optimize stab incidence best flight charac teristics pair glass filled nylon adjusters included provide micro screw adjustment smaller front tube Main tube aluminum matching phenolic sncket S695 Include $2 SOltem UPS esidents Add 6% Sales Tax GATOR RIC PRODUCTS 3713 Pompano Dr acola FL 32514 476-8639 ship Responses sources 99 percent favorable wont comment less percent neg ative responses received Following review comments re ceived FCC assembled final report order approving November 1982 Six years making 1982 FCC legislation milestone RC model ers awarded RC aircraft 50 channels RC boats cars receiving 30 frequency distribution expected use ful years come phase-in plan drawn up allow manufacturers users adapt new set frequencies between 1983 1991 first phase aircraft completed December 1987 final phase 50 channels scheduled 1991 What long significant effort culmi nating gratifying outcome Sixth Battle 40 years on-again off-again struggles FCC have Readers radio amateurs will have observed very little detail has de voted ham frequencies played such important role pioneering RC hobby still effective RC use PLUG-IN WING ADJUSTER KIT Four glass filled nylon brackets included key wing panels front rear allow accurately adjust panel straight flight Complete hardware & instructions1995 _ WING TUBE & SOCKETS Aluminum alloy tubing plug-in wings Included pair special slip-fit phenolic sorkets build wing structure Now size models 718 dia aS 895 ldiax2S 995 1diax311495 64 Model Aviation TAIBI 1/8-INCH3648 BALSA WOOD STIcKS 1/18-INCH3848 1/160111626 1116313207 1116x1/60611 1/I6o3/160913 1/1801/41015 1/1603/81317 1/161/21620 1/163/42128 3/32-INCH3848 3/323/320811 3/32 01/80913 3/32031161015 3/32 01/41316 3/3203/81419 3/32 01/21621 3/323/42431 Double Balsa Wood Prices Spruce Basswood Sticks 1/80 1/8 1/8 o 3116 1/80 1/4 1/8 0 318 1/801/3 1/80314 3/8-INCH3848 09113/803182737 11153/80 1/23041 13173/8o3144460 1621 17241/2-INCH3648 20331/2 0 1/23749 1/2 03145270 TRIANGULAR CUT BALSA 1/401/403624 3/8o3/8o3629 1/20 1/203637 3/4o3/4o3647 10103061 BALSA PLANKS 3/403036178 1x2o36184 103036230 104036303 202036230 203036329 204030464 3o3o36490 304030680 3/18-INCH3848 3/16031161317 3/180 1/41419 3/1803181621 3/160 1/21820 3/16 0 3142838 1/4-INCH3648 1/40 1/41621 1/403/81825 1/401/22129 1/403143142 B/i 8-INCH3848 9/160 5/162027 9/16 3182230 5/180 1/22736 5/16 3143952 BALSA SHEETS 1-INCH3848 1/160 12736 3/32013040 1/80 13344 3/16 13749 I/do 14157 3/8 0 19372 1/2 o 16588 2-INCH3648 1/32023040 1/160 23648 3/32 o 24154 1/8 024660 3/160 25472 1/4026384 3/80277103 3-INCH3848 1/32034053 1/16034358 3/32 35270 1/8036080 3/18 037295 1/40384112 5/1603103134 3/803130160 1/203150200 4-INCH3648 1/32046587 1/180473101 3/320482109 1/80495128 3/1604114151 1/404131193 3/804182271 1/202 113 150 1/204219325 BIRCH PLYWOOD 1/840120 12175 1/84012024350 1/64 012048700 1/64 a490482800 1/320601252 1/320120 12105 1/320 12024210 1/320 12049430 I/16o6o1252 1/180120 12108 1/18012024210 1/16o12040430 3/32o6o1291 3/320120 12163 3/32 012 0 24328 3/32 o12 0 48652 1/8o8o1289 1/8012012178 1/8012024356 1/8o12o49712 3116o6s1274 3/160120 12146 3/160120 24293 3/16 012o48585 1/40601274 1/40120 12146 1/4 012024293 1/4 012046585 3/80 120 12180 3/8 0 12 0 24360 318012048720 1/2 0120 12202 1/2 0120 24405 1/2 012048908 LITE PLYWOOD 1/901201256 1/80 12024112 1/8012048224 TAPERED TRAILING EDGE3648 1/80 1/22230 3/16 0 3/42940 1/40 I4255 5/16o 1/o4461 3/8o 15272 Superior Aircraft Materials 12020-G Centralla iian Gardens CalIfornia 90716 865-3220 Handling Charge -$500 $300 COD mum Order $2000 FOB Factory accept Peraonal checka COD fornia Recidenta add 6% Salea Tax today channels have coordi nated Amateur Radio Relay League Dick Jansson WD4FAB other RC hams over years RC channels li censed hams included summary follows Summary Comments1988 ac companying table summarizes ac quisitions changes RC frequen cies through confrontations negotia tions FCC over past 40 years retrospect frequency changes RC fliers over years due fact truly exclusive RC channels mercy other users numbers growing just rapidly needs rivals keep ing pace own 80 new RC channels literally ex clusive FCC has designated no other us ers RCers shouldnt vulnerable co-channel usersbecause shouldnt Adjacent non-RC channels will close 10 kHz possibly could cause trouble alternate RC chan nels provide fallback Fortunately sophisticated technology available implement required new narrow-band RC equipment German RC channels 35 MHz spaced 10 kHz intervals have use successfully almost 10 years Further recent reports dicate several companies already selling RC equipment meeting 1991 specifi cations reasonable cost future looks good wide frequency separation between RC Aircraft RC Surface Vehicle bands should prevent mutual interfer ence between two classes thank RC modelers RC dustry members national interna tional plane boat auto organizations have given support apprecia tion tremendous frequency acquisi tion effort AMA organization has carried out over past four decades expect present system RC-only channels workable hope 40 years RC frequency batfies FCC have reached end Weve quite lot practice deploying resources however need should arise Lets make certain value hard-earned frequencies asset understand importance using wisely care should serve us long long time come AMA Frequency Committee mem bers have contributed hours time toward acquisition RC channels deserve special thanks names follow AMA RC Frequency Committees 1946-1988 1946-1962 Walt GoodChairman MembersWillis Brown Warren Bartlett Clay Freese Ed Lorenz Howard McEntee Dick Schumacher William Stelmach 1963-1971 Ed LorenzChairman MembersWalt Good Maynard Hill Ver non MacNabb Howard McEntee John Phelps Jack Port Paul Runge 1972-1980 John StrongChairman MembersBob Aberle Jack Albrecht Walt Good Dick Jansson Fred Marks C Tor rey Williams 1981-1982 Bob AberleChairman MembersJack Albrecht Dave Brown Walt Good Bill Hershberger Dick Jans Continued page 157 Announcing thGQRBI7VERi Multi channel Nan dlaunch Competition* w Wingapan GlideriPlapa NEW LE1EL OF ORMANCE UHAZATD] 1JkYCH COMPETIOH 11PI NHV BE THE SAUE 1A * Sin@IJ uervoa up ConatruoMon HAS AX2D THE ORBITER EE 4061Eardvage / Llnkageg moluved OFFERS FL SPAN 1 REFLEZ JZFST Uhf THE LO1PESONI $aadlatampe Jar ear aew uatJeg Ow Newulefler IXOMD WZND 4F-J La Now Available $121230 Damson Roaa Bothell PtA 98021 206-776-8067 July 1989 65 DODGSON very smooth-running tail rotor unusually high degree control accuracy tail rotor drive system based 2mmdiameter steel drive shaft design has proved highly reliable Now shaft sup ported special brass tube tube needs lubricated initially over its entire length af ter installation drive system operates freely vibration requires no maintenance Magic Ranger brass tube set slot ted wood strip installed top fuselage boom open trainer version tube sus pended tail boom several supports main difference between open trainerconfiguration Magic fuselage-equipped Magic Ranger found tail boom canopy canopy assembled two halfshells fitted over radio equipment mechanical assembly secured side two knurled knobs complete servo sup port structure same both models tail boom Magic aluminum tube attached mechanical assembly us ing newly designed composite fixture solidly braced additional support tube Flexible landing gear supplied black stan dard although white now available op tion main rotor head control system System 88 virtually un changed Based control movements offset 450 system has proven outstand ingly effective has eliminated completely tendency model balloon dive flying forward fast speed new fea ture injection-molded servo structure As can see Magic sounds good its long blades tail boom should smooth capital S So much new stuff Its summer Get broken bird back together lets go fly BCNU RC Battle/Good Continued page 65 son Fred Marks John Strong C Torrey Williams 1983-1984 George MyersChairman MembersJack Albrecht Dave Brown Bill Hershberger John Lange Fred Marks Jim Oddino C Torrey Williams Al Watson ConsultantsBob Aberle Walt Good Dick Jansson 1985-1988 Fred MarksChairman MembersJack Albrecht Dave Brown Steve Helms Bill Hershberger Dave Hil senhoff George Myers Bob Novak Pete Waters Jim Oddino Warren Plohr George Steiner ConsultantsWalt Good Dick Jansson individual name cluded above listings has volved Frequency Committee since 1963 AMA president since became AMA ex ecutive director 1964 name John Worth John has longtime personal obses sion RC has contributed immeasur ably RC frequency story through executive capacity AMA Sorting through hundreds files preparing article Ive seen hand tying gether reporting RC Committees ef forts Thanks John being long-term contributing phantom member AMA RC Frequency Committee Pou du Ciel/Allison Continued page 71 mouflage lighter colors seen black-and-white photo such light grays blues Using artists airbrush opaque watercolors also called designers colors taped condenser paper over paper wing stab outlines cam ouflage patterns drawn method colors preshrinks covering operation fuselage bit trickier pattern used centered cowl cabin sections sides bottom sides left rightsort Scale model Ror schach inkblot shape painted three sets Id have extras mistakes repairs fuselage covered separate pieces sides lower sides upper cowl area lower cowl cabin roof Trial fit cabanes landing gear cabin side panels fuselage removing before covering fuselage pieces painted separately glued completed fuselage windshield added using RC-56 glue along edge cabin roof prepainted wind shield posts Glue rear edges windshield rear cabin posts before glu ing side panels posts did glue front bottom edge windshield top fuselage used Pactra enamel engine cylinders top cooling fins painted unit gloss black mix silver little cop per little dark gray dry brush lightly across cooling fins high lights edges fins giving cylin ders oily slightly rusted look takes exhausts get same treatment headbolts pushrods silver highlighting contrast Spark plugs rocker covers white Plug wires prop blades tires flat black dark gray MIAMA Pistachio Scale rules include three weight categories Category Iunder two grams Iltwo three grams III over three grams strategy try build lowest weight allowed par ticular category taking advantage close correlation between wing loading duration dont like ghost ships dont like empty calories either concen trate scale detail ie weight toward front end intention dazzling judges eye great en gine spinner gas cap etc barely notices paint job gets more transparent toward tail its lightweight rubdown registration numbers THE LEADER IN COMPETITION NEW THP DESIGN DIAPRICE 15 16 NEW PRO SERIES 3 II 1 NEW HIGH TECH AIRFOIL SECTION 10 TO 200/o INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 534 634 72833/,456 8334568 94566Io77 104566/7 106W8W 106EW 114677/o7/ol8 115W 116EW 1167 124W 125W 1256 1356 1456 1556 164/N 16678 RC PYLON RACING SERIES 500 DIA PITCHPRICE 75N 5N SERIES 400C 866T7/o7 977/,73/ W WIDE BLADE 0EW EXTRA WIDE N NARROW July 1989 157 PROPELLERS TAILORED HELICAL PITCH DEVELOPEDTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW PITCH THP 677/o8 677/6 67 678
Edition: Model Aviation - 1989/07
Page Numbers: 60, 61, 62, 63, 64, 65, 157
IN ITS FOURTH battle Federal Communications Commission 196971 AMA forced defend 72 MHz RC aircraft-only channels against RC boat car users requesting use RC aircraft fliers experienced consid erable interference Citizen Band radio users earlier 27 MHz channels moti vating AMAs request FCC authori zation 72 MHz frequencies five new 72 MHz channels AMA acquired 1966 well received RC modelers outset continued 1969 RC airplane competition growing rapidly safely However radio-controlled boats cars authorized use 27 MHz chan nels beginning invade 72 MHz RC aircraft-only channels least some intrusion other RC branches Top Walt Bill Good during Guft flight 1947 Nats Minneapolis Note smail transmitter down 5 watts Theyre still 50 MHz ham frequency Harry Geyer left calling time judge Ken Carter kneeling right Above left Jim Walkers plane 30-watt 50 MHz ham transmitter top boxes transmitter multicontrol unit Pozipo sequence control time rudder elevator engine Jim photo won 1946 Nate RC event people picture iden tified Above right Charlie Siegfrieds 110-watt transmitter just about fills trunk car operated 50 MHz ham frequency 60 Model Aviation Vernon MacNabb seen 1950 holding first commercial license-free RC transmitters operating 465 MHz Purdue-shined fellow right holding 465 MHz receiver lad left identified Note remarkably small size unit tiny dipole antenna caused same problem aggra vated RC fliers few years earlier interference CB operators Califor nia RC boat competitions held over 20 boating clubs nearly 700 members CB voice transmitters disturbing boat controls 27 MHz Since some boats weighed much eight pounds zoomed along 60 mph RC boaters contended CB interference could dangerous Consequently spring 1969 W C Young California RC boater peti tioned FCC RC boat channels 72 MHz FCC responded releasing rule-making Docket #18733 November 1969 proposing RC boats cars share five aircraft channels 72 MHz As ex pected AMA strongly objected such joint usage because would endanger primary advantage gained 1966 safety RC airplanes June 1970 FCC countered second proposal version three chan nels would retained aircraft two non-aircraft two additional chan nels shared types models AMA objected cutting aircraft-only channels five three third final solution proposed adopted Becoming effective November 15 1971 reserved four channels RC aircraft-only use designated three shared channels Giving RC aircraft use seven channels boats cars three viable solution time Approval unanimous vote FCC Commis sioners AMA attorney Jerry Courtneys efforts working FCC obtaining previous legislative action greatly ap Charlie Siegfried seen plane 1947 Nats holding control box sole function control box send signals transmitter trunk car preciated RC aircraft modelers letter John Worth dated October 6 1971 Courtney stated A has deed discharged trust reposed aircraft modeler fraternity twice re versing stream proposed governmen tal action adverse interests air craft modelers Verbally assured us unusual time AMA membership 30000 compared few thousand national organizations RC boat car users AMAs large size prior experience FCC pro cedures helpful RC modelers instance representatives two organizations associated RC fraternity objected RC modelers use 72 MHz band Frequency Committee Chairman Ed Lorenz gratified FCCs defense AMA International Municipal Signal Association IMSA International Association Fire Chiefs IAFC proposed docket RC channels completely removed 72-76 band due possible interference emergency call box operation response FCC stated IMSA IAFC did present specific evidence harm ful interference adding Furthermore Commission un aware instances harmful interfer ence model craft operation other Commission services operating five shared frequencies presently avail able 72-76 MHz range over past five years consequently possibility increased interference fire radio other shared services considered minimal favorable response evidence AMA RCers carefully follow ing hard-earned regulations gained respect FCC its Fourth July 1989 61 AMA President CO Wright 1948 just before meeting FCC officials Washington DC Attending AMA addition Wright Willis Brown Russ Nichols Walt Good Left lineup RC Pattern models waiting daily qualifying line 1958 Nats held near Chicago Most planes equipped tuned-reed pulse-proportional controls Right Gordon Gabbert seen version Dale Roots Ascender model top Pattern ships competing 1958 Note low-wing Astro-Hog just left also very competitive airplane Left Three delta-configuration Pylon Racers 1958 Nats Weldon Smith pioneers delta racer Right Bob Wischers 2nd-place Scale plane looks like 1-19 actually rare Marine Corps version called OE-2 derived Cessna-i 72 Note typical ground-based transmitter left controlled WAG three-tube RX pulsing rudder three speeds Fox 19 engine Battle agency AMA de fended its RC frequency needs increased its stature Ed Lorenz now living Florida re minded AMA Frequency Com mittee helped raise unheard-of sum $10000 finance legal costs reach ing accommodation RC boat car users Donations came came both industry modelers 1974 FCC proposal five RC channels 27 MHz band allocated Citizen Band radio expansion signaled beginning Fifth Battle strug gle ended 1976 FCC issued Docket #20120 July 31 1974 proposing 27 MHz CB channels increased 22 45 cause huge increase number licensed CBers According FCC records number CBers five million creasing one-half million per month AMA Frequency Chairman John Strong committee concerned proposal reasonably Five new channels proposed CB use RC frequencies since FCC first sanctioned 1958 Although RC fliers moved 72 MHz 1960s 1970s some still using 27 MHz boat car operators ad dition toy RC market produced its less expensive units frequency cause vulner ability RC planes nearby CBers joint use five targeted 27 MHz frequen cies would quickly drive RCers out band AMA coun terproposed FCC five class C RC slots retained RC usage televi sion industry also opposed expan sion CB chan nels anticipating increased television inter ference harmonics CB sets combined efforts AMA Jerry Courtney hundreds letters AMA members FCC succeeded preserving five imperiled RC channels types RC use After several modi fications FCC 1975 1976 Docket #20 120 assigning CBers 17 new channels total 40 became effec tive January 1 1977 Some 12 years later five 27 MHz RC frequencies still use Sixth Battle obtain 80 channels RC Models1977-83 ink drying Docket #20 120 other events threatening RC aircraft use both 27 MHz 72 MHz channels Despite nominal victory 1977 docket ex plosive growth CB operation five 13 million between 1976 1978 practi cally eliminated safe use 27 MHz slots RC aircraft Most RCers driven seven 72 MHz frequencies Unfortunately channels becom ing increasingly cluttered other legal 62 Model Aviation blackboard shows status RC events qualifying days 1958 Nats near Chicago largest RC Nats staged up time 268 entries six categories users some areas country rapid up swing radio paging system usage 72 MHz eclipsing RC planes St Petersburg area Florida example three paging systems different RC spot similar situations ex isted other states Since RC channels assigned secondary priority usage no choice faced conflict except convert another RC channel free pagers RC group appealed regional FCC office explanation pager assigned RC spots FCC representative said dont al locate frequencies just process applica tions other words pager asked non-RC spot several no conflict RC fre quency would have occurred course FCC could easily have answered RC usage protected other us ers same frequency As early 1971 AMA spon sored FAI World Championship RC Pattern models near Philadelphia called regional FCC office request assist ance monitoring RC spectrum safety purposes during meet Though sympathetic request office too understaffed help Upon learning Hewlett-Packard company loaned us four late-model spectrum analyzers monitoring task FCC officer told Thats much better can just go ahead give call run serious interference Ill try help spectrum analyzer scopes meet showed 22 CR channels active intermittent illegal voice signals RC channels During contest simply delayed launch RC plane until scope showed clear channel tactic worked None 240 flights22 countries 60 planes participatedexpe rienced crashes due interfering signals didnt have call understaffed FCC office 1978 rapidly deteriorating accessi bility assigned RC channels spurred intensive effort AMA RC Fre quency Committee gain safer RC channels future assist ance Chairman John Strong attor neys Jerry Courtney Jack Smith committee drew up plan generating rule-making petition submitted FCC Little did realize time embarking six-year-long effort elusive exclusive channels1979 drafting rule-making petition FCC Frequency Committee planned focus its efforts 72-75 MHz band itially assuming truly exclusive chan nels available reasoned ob taining sufficient number channels 72-75 MHz band would obviate con flicts allowing us use clear channels avoid other occu July 1989 63 Close-up Vernon MacNabbs Citizen-Ship 465 MHz receiver Note aluminum base also loop antenna receiver measures 2 x 3 x 4 weighs 5 oz Its single tube superregenerative receiver using Sigma relay switch actuator escapement Gene Foxworthy Indianapolis IN won 1950 Nats 465 MHz gear Hoosier Hot Shot Note twin rudders wing slots tricycle landing geara very modern rig time NEW FEATURES ADDED! es Four Aircraft Setups Includes Seven Different Servo Configurations Individual Surface Travel Limits Centering Single Switch Presets Launch Speed Modes Full Trailing Edge Control Enhanced Mixing Functions Crow Landing Capability * User Selectable Cross Trim Capability Flap Stick Reversing Elevator Camber VTR * Automatic Selection High Ail Rudder Mixing Launch Landing Modes * New Feature Fully installed kit Control Systems Laboratories 238S Hillview Dr Milpitas CA 95035 408 946-4142 Aiztronics ami Module 75P registered trademarks Aictronics Inc ATRCSTM Advaneed Teehnolog Radio Control System Works standard FM/PPM Receivers AirtronicsTh PCM Receivers Converts Module 75P advanced computerized control system Elevator Camber % I//2V/ 0 070 100 Elevator Stick Position % pants Which channels clear ex pected vary different geographic ar eas depending local pager frequen cies Further planned request fre quency usage types RC models divide channels between aircraft surface craft very beginning After number committee meetings drafts proposal 32-page peti tion rule-making submitted FCC accepted January 8 1979 RM-3248 Review petition over following year involved constructive interplay tween Jack Smith behalf AMA Don Campbell FCC addition spokesman Smith AMA RC Frequency Committee others participated periodically Mike Gilbertson expert electronics engineer supplied answers numerous technical questions FCC staff Perhaps goal exclusive RC chan nels wouldnt elude us after strategy attaining hammered out AMA Frequency meetings supported Don Campbell FCC late 1979 seemed promising Since nor mal commercial channel spacing THE BEST FUSELAGE JIG EVER PERIOD Provides Solid Support Accurate Building Rugged Construction 7 Ply Aircraft Plywood Provides Lifetime Use Two Sizes Available Regular Fuselages Up 6 Wide Jumbo Fuselages Up 9 Wide Use Own Building Board Work Bench Base Mount Jig Station Uni-Strut Guide Rails Most Versatile Set-Up Contains Complete Hardware Instructions Including Uni-Strut Information Box 4 Standard Jig Stations 11795 Box 4 Jumbo Jig Stations 1995 TwoS ft long Guide Rails including mounting nuts 2195 20 kHz raster shift RC chan nels over 10 kHz ensure no RC channel would precisely commer cial channel Spacing channels 10 kHz intervals would far preferable dead especially capability newer narrow-band receivers After ing checked technical experts among committee members concept 10 kHz offset included updated 45page RM-3248 sent FCC September 1980 definition new channels truly exclusive because assigned FCC other user Still another round questions swers took place including briefing seven FCC Commissioners Fred Marks team late 1981 Bob Aberle became chairman AMA RC Frequency Committee 1981 happy Notice Proposed Rule Making last approved FCC May 1982 placed FCC ac tion chain comments parties AMA widely distributed contents new proposal RC industries hobby magazines national organizations cars boats AMA memberIVANS MAGIC GADGET protractor device used Ivan Kristensen accurately measure aileron elevator rudder throw takes guess work out trimming out airplane qualty tool complete instructions log book carrying case1795 PLUG-IN ADJUSTABLE STAB KIT last can optimize stab incidence best flight charac teristics pair glass filled nylon adjusters included provide micro screw adjustment smaller front tube Main tube aluminum matching phenolic sncket S695 Include $2 SOltem UPS esidents Add 6% Sales Tax GATOR RIC PRODUCTS 3713 Pompano Dr acola FL 32514 476-8639 ship Responses sources 99 percent favorable wont comment less percent neg ative responses received Following review comments re ceived FCC assembled final report order approving November 1982 Six years making 1982 FCC legislation milestone RC model ers awarded RC aircraft 50 channels RC boats cars receiving 30 frequency distribution expected use ful years come phase-in plan drawn up allow manufacturers users adapt new set frequencies between 1983 1991 first phase aircraft completed December 1987 final phase 50 channels scheduled 1991 What long significant effort culmi nating gratifying outcome Sixth Battle 40 years on-again off-again struggles FCC have Readers radio amateurs will have observed very little detail has de voted ham frequencies played such important role pioneering RC hobby still effective RC use PLUG-IN WING ADJUSTER KIT Four glass filled nylon brackets included key wing panels front rear allow accurately adjust panel straight flight Complete hardware & instructions1995 _ WING TUBE & SOCKETS Aluminum alloy tubing plug-in wings Included pair special slip-fit phenolic sorkets build wing structure Now size models 718 dia aS 895 ldiax2S 995 1diax311495 64 Model Aviation TAIBI 1/8-INCH3648 BALSA WOOD STIcKS 1/18-INCH3848 1/160111626 1116313207 1116x1/60611 1/I6o3/160913 1/1801/41015 1/1603/81317 1/161/21620 1/163/42128 3/32-INCH3848 3/323/320811 3/32 01/80913 3/32031161015 3/32 01/41316 3/3203/81419 3/32 01/21621 3/323/42431 Double Balsa Wood Prices Spruce Basswood Sticks 1/80 1/8 1/8 o 3116 1/80 1/4 1/8 0 318 1/801/3 1/80314 3/8-INCH3848 09113/803182737 11153/80 1/23041 13173/8o3144460 1621 17241/2-INCH3648 20331/2 0 1/23749 1/2 03145270 TRIANGULAR CUT BALSA 1/401/403624 3/8o3/8o3629 1/20 1/203637 3/4o3/4o3647 10103061 BALSA PLANKS 3/403036178 1x2o36184 103036230 104036303 202036230 203036329 204030464 3o3o36490 304030680 3/18-INCH3848 3/16031161317 3/180 1/41419 3/1803181621 3/160 1/21820 3/16 0 3142838 1/4-INCH3648 1/40 1/41621 1/403/81825 1/401/22129 1/403143142 B/i 8-INCH3848 9/160 5/162027 9/16 3182230 5/180 1/22736 5/16 3143952 BALSA SHEETS 1-INCH3848 1/160 12736 3/32013040 1/80 13344 3/16 13749 I/do 14157 3/8 0 19372 1/2 o 16588 2-INCH3648 1/32023040 1/160 23648 3/32 o 24154 1/8 024660 3/160 25472 1/4026384 3/80277103 3-INCH3848 1/32034053 1/16034358 3/32 35270 1/8036080 3/18 037295 1/40384112 5/1603103134 3/803130160 1/203150200 4-INCH3648 1/32046587 1/180473101 3/320482109 1/80495128 3/1604114151 1/404131193 3/804182271 1/202 113 150 1/204219325 BIRCH PLYWOOD 1/840120 12175 1/84012024350 1/64 012048700 1/64 a490482800 1/320601252 1/320120 12105 1/320 12024210 1/320 12049430 I/16o6o1252 1/180120 12108 1/18012024210 1/16o12040430 3/32o6o1291 3/320120 12163 3/32 012 0 24328 3/32 o12 0 48652 1/8o8o1289 1/8012012178 1/8012024356 1/8o12o49712 3116o6s1274 3/160120 12146 3/160120 24293 3/16 012o48585 1/40601274 1/40120 12146 1/4 012024293 1/4 012046585 3/80 120 12180 3/8 0 12 0 24360 318012048720 1/2 0120 12202 1/2 0120 24405 1/2 012048908 LITE PLYWOOD 1/901201256 1/80 12024112 1/8012048224 TAPERED TRAILING EDGE3648 1/80 1/22230 3/16 0 3/42940 1/40 I4255 5/16o 1/o4461 3/8o 15272 Superior Aircraft Materials 12020-G Centralla iian Gardens CalIfornia 90716 865-3220 Handling Charge -$500 $300 COD mum Order $2000 FOB Factory accept Peraonal checka COD fornia Recidenta add 6% Salea Tax today channels have coordi nated Amateur Radio Relay League Dick Jansson WD4FAB other RC hams over years RC channels li censed hams included summary follows Summary Comments1988 ac companying table summarizes ac quisitions changes RC frequen cies through confrontations negotia tions FCC over past 40 years retrospect frequency changes RC fliers over years due fact truly exclusive RC channels mercy other users numbers growing just rapidly needs rivals keep ing pace own 80 new RC channels literally ex clusive FCC has designated no other us ers RCers shouldnt vulnerable co-channel usersbecause shouldnt Adjacent non-RC channels will close 10 kHz possibly could cause trouble alternate RC chan nels provide fallback Fortunately sophisticated technology available implement required new narrow-band RC equipment German RC channels 35 MHz spaced 10 kHz intervals have use successfully almost 10 years Further recent reports dicate several companies already selling RC equipment meeting 1991 specifi cations reasonable cost future looks good wide frequency separation between RC Aircraft RC Surface Vehicle bands should prevent mutual interfer ence between two classes thank RC modelers RC dustry members national interna tional plane boat auto organizations have given support apprecia tion tremendous frequency acquisi tion effort AMA organization has carried out over past four decades expect present system RC-only channels workable hope 40 years RC frequency batfies FCC have reached end Weve quite lot practice deploying resources however need should arise Lets make certain value hard-earned frequencies asset understand importance using wisely care should serve us long long time come AMA Frequency Committee mem bers have contributed hours time toward acquisition RC channels deserve special thanks names follow AMA RC Frequency Committees 1946-1988 1946-1962 Walt GoodChairman MembersWillis Brown Warren Bartlett Clay Freese Ed Lorenz Howard McEntee Dick Schumacher William Stelmach 1963-1971 Ed LorenzChairman MembersWalt Good Maynard Hill Ver non MacNabb Howard McEntee John Phelps Jack Port Paul Runge 1972-1980 John StrongChairman MembersBob Aberle Jack Albrecht Walt Good Dick Jansson Fred Marks C Tor rey Williams 1981-1982 Bob AberleChairman MembersJack Albrecht Dave Brown Walt Good Bill Hershberger Dick Jans Continued page 157 Announcing thGQRBI7VERi Multi channel Nan dlaunch Competition* w Wingapan GlideriPlapa NEW LE1EL OF ORMANCE UHAZATD] 1JkYCH COMPETIOH 11PI NHV BE THE SAUE 1A * Sin@IJ uervoa up ConatruoMon HAS AX2D THE ORBITER EE 4061Eardvage / Llnkageg moluved OFFERS FL SPAN 1 REFLEZ JZFST Uhf THE LO1PESONI $aadlatampe Jar ear aew uatJeg Ow Newulefler IXOMD WZND 4F-J La Now Available $121230 Damson Roaa Bothell PtA 98021 206-776-8067 July 1989 65 DODGSON very smooth-running tail rotor unusually high degree control accuracy tail rotor drive system based 2mmdiameter steel drive shaft design has proved highly reliable Now shaft sup ported special brass tube tube needs lubricated initially over its entire length af ter installation drive system operates freely vibration requires no maintenance Magic Ranger brass tube set slot ted wood strip installed top fuselage boom open trainer version tube sus pended tail boom several supports main difference between open trainerconfiguration Magic fuselage-equipped Magic Ranger found tail boom canopy canopy assembled two halfshells fitted over radio equipment mechanical assembly secured side two knurled knobs complete servo sup port structure same both models tail boom Magic aluminum tube attached mechanical assembly us ing newly designed composite fixture solidly braced additional support tube Flexible landing gear supplied black stan dard although white now available op tion main rotor head control system System 88 virtually un changed Based control movements offset 450 system has proven outstand ingly effective has eliminated completely tendency model balloon dive flying forward fast speed new fea ture injection-molded servo structure As can see Magic sounds good its long blades tail boom should smooth capital S So much new stuff Its summer Get broken bird back together lets go fly BCNU RC Battle/Good Continued page 65 son Fred Marks John Strong C Torrey Williams 1983-1984 George MyersChairman MembersJack Albrecht Dave Brown Bill Hershberger John Lange Fred Marks Jim Oddino C Torrey Williams Al Watson ConsultantsBob Aberle Walt Good Dick Jansson 1985-1988 Fred MarksChairman MembersJack Albrecht Dave Brown Steve Helms Bill Hershberger Dave Hil senhoff George Myers Bob Novak Pete Waters Jim Oddino Warren Plohr George Steiner ConsultantsWalt Good Dick Jansson individual name cluded above listings has volved Frequency Committee since 1963 AMA president since became AMA ex ecutive director 1964 name John Worth John has longtime personal obses sion RC has contributed immeasur ably RC frequency story through executive capacity AMA Sorting through hundreds files preparing article Ive seen hand tying gether reporting RC Committees ef forts Thanks John being long-term contributing phantom member AMA RC Frequency Committee Pou du Ciel/Allison Continued page 71 mouflage lighter colors seen black-and-white photo such light grays blues Using artists airbrush opaque watercolors also called designers colors taped condenser paper over paper wing stab outlines cam ouflage patterns drawn method colors preshrinks covering operation fuselage bit trickier pattern used centered cowl cabin sections sides bottom sides left rightsort Scale model Ror schach inkblot shape painted three sets Id have extras mistakes repairs fuselage covered separate pieces sides lower sides upper cowl area lower cowl cabin roof Trial fit cabanes landing gear cabin side panels fuselage removing before covering fuselage pieces painted separately glued completed fuselage windshield added using RC-56 glue along edge cabin roof prepainted wind shield posts Glue rear edges windshield rear cabin posts before glu ing side panels posts did glue front bottom edge windshield top fuselage used Pactra enamel engine cylinders top cooling fins painted unit gloss black mix silver little cop per little dark gray dry brush lightly across cooling fins high lights edges fins giving cylin ders oily slightly rusted look takes exhausts get same treatment headbolts pushrods silver highlighting contrast Spark plugs rocker covers white Plug wires prop blades tires flat black dark gray MIAMA Pistachio Scale rules include three weight categories Category Iunder two grams Iltwo three grams III over three grams strategy try build lowest weight allowed par ticular category taking advantage close correlation between wing loading duration dont like ghost ships dont like empty calories either concen trate scale detail ie weight toward front end intention dazzling judges eye great en gine spinner gas cap etc barely notices paint job gets more transparent toward tail its lightweight rubdown registration numbers THE LEADER IN COMPETITION NEW THP DESIGN DIAPRICE 15 16 NEW PRO SERIES 3 II 1 NEW HIGH TECH AIRFOIL SECTION 10 TO 200/o INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 534 634 72833/,456 8334568 94566Io77 104566/7 106W8W 106EW 114677/o7/ol8 115W 116EW 1167 124W 125W 1256 1356 1456 1556 164/N 16678 RC PYLON RACING SERIES 500 DIA PITCHPRICE 75N 5N SERIES 400C 866T7/o7 977/,73/ W WIDE BLADE 0EW EXTRA WIDE N NARROW July 1989 157 PROPELLERS TAILORED HELICAL PITCH DEVELOPEDTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW PITCH THP 677/o8 677/6 67 678
Edition: Model Aviation - 1989/07
Page Numbers: 60, 61, 62, 63, 64, 65, 157
IN ITS FOURTH battle Federal Communications Commission 196971 AMA forced defend 72 MHz RC aircraft-only channels against RC boat car users requesting use RC aircraft fliers experienced consid erable interference Citizen Band radio users earlier 27 MHz channels moti vating AMAs request FCC authori zation 72 MHz frequencies five new 72 MHz channels AMA acquired 1966 well received RC modelers outset continued 1969 RC airplane competition growing rapidly safely However radio-controlled boats cars authorized use 27 MHz chan nels beginning invade 72 MHz RC aircraft-only channels least some intrusion other RC branches Top Walt Bill Good during Guft flight 1947 Nats Minneapolis Note smail transmitter down 5 watts Theyre still 50 MHz ham frequency Harry Geyer left calling time judge Ken Carter kneeling right Above left Jim Walkers plane 30-watt 50 MHz ham transmitter top boxes transmitter multicontrol unit Pozipo sequence control time rudder elevator engine Jim photo won 1946 Nate RC event people picture iden tified Above right Charlie Siegfrieds 110-watt transmitter just about fills trunk car operated 50 MHz ham frequency 60 Model Aviation Vernon MacNabb seen 1950 holding first commercial license-free RC transmitters operating 465 MHz Purdue-shined fellow right holding 465 MHz receiver lad left identified Note remarkably small size unit tiny dipole antenna caused same problem aggra vated RC fliers few years earlier interference CB operators Califor nia RC boat competitions held over 20 boating clubs nearly 700 members CB voice transmitters disturbing boat controls 27 MHz Since some boats weighed much eight pounds zoomed along 60 mph RC boaters contended CB interference could dangerous Consequently spring 1969 W C Young California RC boater peti tioned FCC RC boat channels 72 MHz FCC responded releasing rule-making Docket #18733 November 1969 proposing RC boats cars share five aircraft channels 72 MHz As ex pected AMA strongly objected such joint usage because would endanger primary advantage gained 1966 safety RC airplanes June 1970 FCC countered second proposal version three chan nels would retained aircraft two non-aircraft two additional chan nels shared types models AMA objected cutting aircraft-only channels five three third final solution proposed adopted Becoming effective November 15 1971 reserved four channels RC aircraft-only use designated three shared channels Giving RC aircraft use seven channels boats cars three viable solution time Approval unanimous vote FCC Commis sioners AMA attorney Jerry Courtneys efforts working FCC obtaining previous legislative action greatly ap Charlie Siegfried seen plane 1947 Nats holding control box sole function control box send signals transmitter trunk car preciated RC aircraft modelers letter John Worth dated October 6 1971 Courtney stated A has deed discharged trust reposed aircraft modeler fraternity twice re versing stream proposed governmen tal action adverse interests air craft modelers Verbally assured us unusual time AMA membership 30000 compared few thousand national organizations RC boat car users AMAs large size prior experience FCC pro cedures helpful RC modelers instance representatives two organizations associated RC fraternity objected RC modelers use 72 MHz band Frequency Committee Chairman Ed Lorenz gratified FCCs defense AMA International Municipal Signal Association IMSA International Association Fire Chiefs IAFC proposed docket RC channels completely removed 72-76 band due possible interference emergency call box operation response FCC stated IMSA IAFC did present specific evidence harm ful interference adding Furthermore Commission un aware instances harmful interfer ence model craft operation other Commission services operating five shared frequencies presently avail able 72-76 MHz range over past five years consequently possibility increased interference fire radio other shared services considered minimal favorable response evidence AMA RCers carefully follow ing hard-earned regulations gained respect FCC its Fourth July 1989 61 AMA President CO Wright 1948 just before meeting FCC officials Washington DC Attending AMA addition Wright Willis Brown Russ Nichols Walt Good Left lineup RC Pattern models waiting daily qualifying line 1958 Nats held near Chicago Most planes equipped tuned-reed pulse-proportional controls Right Gordon Gabbert seen version Dale Roots Ascender model top Pattern ships competing 1958 Note low-wing Astro-Hog just left also very competitive airplane Left Three delta-configuration Pylon Racers 1958 Nats Weldon Smith pioneers delta racer Right Bob Wischers 2nd-place Scale plane looks like 1-19 actually rare Marine Corps version called OE-2 derived Cessna-i 72 Note typical ground-based transmitter left controlled WAG three-tube RX pulsing rudder three speeds Fox 19 engine Battle agency AMA de fended its RC frequency needs increased its stature Ed Lorenz now living Florida re minded AMA Frequency Com mittee helped raise unheard-of sum $10000 finance legal costs reach ing accommodation RC boat car users Donations came came both industry modelers 1974 FCC proposal five RC channels 27 MHz band allocated Citizen Band radio expansion signaled beginning Fifth Battle strug gle ended 1976 FCC issued Docket #20120 July 31 1974 proposing 27 MHz CB channels increased 22 45 cause huge increase number licensed CBers According FCC records number CBers five million creasing one-half million per month AMA Frequency Chairman John Strong committee concerned proposal reasonably Five new channels proposed CB use RC frequencies since FCC first sanctioned 1958 Although RC fliers moved 72 MHz 1960s 1970s some still using 27 MHz boat car operators ad dition toy RC market produced its less expensive units frequency cause vulner ability RC planes nearby CBers joint use five targeted 27 MHz frequen cies would quickly drive RCers out band AMA coun terproposed FCC five class C RC slots retained RC usage televi sion industry also opposed expan sion CB chan nels anticipating increased television inter ference harmonics CB sets combined efforts AMA Jerry Courtney hundreds letters AMA members FCC succeeded preserving five imperiled RC channels types RC use After several modi fications FCC 1975 1976 Docket #20 120 assigning CBers 17 new channels total 40 became effec tive January 1 1977 Some 12 years later five 27 MHz RC frequencies still use Sixth Battle obtain 80 channels RC Models1977-83 ink drying Docket #20 120 other events threatening RC aircraft use both 27 MHz 72 MHz channels Despite nominal victory 1977 docket ex plosive growth CB operation five 13 million between 1976 1978 practi cally eliminated safe use 27 MHz slots RC aircraft Most RCers driven seven 72 MHz frequencies Unfortunately channels becom ing increasingly cluttered other legal 62 Model Aviation blackboard shows status RC events qualifying days 1958 Nats near Chicago largest RC Nats staged up time 268 entries six categories users some areas country rapid up swing radio paging system usage 72 MHz eclipsing RC planes St Petersburg area Florida example three paging systems different RC spot similar situations ex isted other states Since RC channels assigned secondary priority usage no choice faced conflict except convert another RC channel free pagers RC group appealed regional FCC office explanation pager assigned RC spots FCC representative said dont al locate frequencies just process applica tions other words pager asked non-RC spot several no conflict RC fre quency would have occurred course FCC could easily have answered RC usage protected other us ers same frequency As early 1971 AMA spon sored FAI World Championship RC Pattern models near Philadelphia called regional FCC office request assist ance monitoring RC spectrum safety purposes during meet Though sympathetic request office too understaffed help Upon learning Hewlett-Packard company loaned us four late-model spectrum analyzers monitoring task FCC officer told Thats much better can just go ahead give call run serious interference Ill try help spectrum analyzer scopes meet showed 22 CR channels active intermittent illegal voice signals RC channels During contest simply delayed launch RC plane until scope showed clear channel tactic worked None 240 flights22 countries 60 planes participatedexpe rienced crashes due interfering signals didnt have call understaffed FCC office 1978 rapidly deteriorating accessi bility assigned RC channels spurred intensive effort AMA RC Fre quency Committee gain safer RC channels future assist ance Chairman John Strong attor neys Jerry Courtney Jack Smith committee drew up plan generating rule-making petition submitted FCC Little did realize time embarking six-year-long effort elusive exclusive channels1979 drafting rule-making petition FCC Frequency Committee planned focus its efforts 72-75 MHz band itially assuming truly exclusive chan nels available reasoned ob taining sufficient number channels 72-75 MHz band would obviate con flicts allowing us use clear channels avoid other occu July 1989 63 Close-up Vernon MacNabbs Citizen-Ship 465 MHz receiver Note aluminum base also loop antenna receiver measures 2 x 3 x 4 weighs 5 oz Its single tube superregenerative receiver using Sigma relay switch actuator escapement Gene Foxworthy Indianapolis IN won 1950 Nats 465 MHz gear Hoosier Hot Shot Note twin rudders wing slots tricycle landing geara very modern rig time NEW FEATURES ADDED! es Four Aircraft Setups Includes Seven Different Servo Configurations Individual Surface Travel Limits Centering Single Switch Presets Launch Speed Modes Full Trailing Edge Control Enhanced Mixing Functions Crow Landing Capability * User Selectable Cross Trim Capability Flap Stick Reversing Elevator Camber VTR * Automatic Selection High Ail Rudder Mixing Launch Landing Modes * New Feature Fully installed kit Control Systems Laboratories 238S Hillview Dr Milpitas CA 95035 408 946-4142 Aiztronics ami Module 75P registered trademarks Aictronics Inc ATRCSTM Advaneed Teehnolog Radio Control System Works standard FM/PPM Receivers AirtronicsTh PCM Receivers Converts Module 75P advanced computerized control system Elevator Camber % I//2V/ 0 070 100 Elevator Stick Position % pants Which channels clear ex pected vary different geographic ar eas depending local pager frequen cies Further planned request fre quency usage types RC models divide channels between aircraft surface craft very beginning After number committee meetings drafts proposal 32-page peti tion rule-making submitted FCC accepted January 8 1979 RM-3248 Review petition over following year involved constructive interplay tween Jack Smith behalf AMA Don Campbell FCC addition spokesman Smith AMA RC Frequency Committee others participated periodically Mike Gilbertson expert electronics engineer supplied answers numerous technical questions FCC staff Perhaps goal exclusive RC chan nels wouldnt elude us after strategy attaining hammered out AMA Frequency meetings supported Don Campbell FCC late 1979 seemed promising Since nor mal commercial channel spacing THE BEST FUSELAGE JIG EVER PERIOD Provides Solid Support Accurate Building Rugged Construction 7 Ply Aircraft Plywood Provides Lifetime Use Two Sizes Available Regular Fuselages Up 6 Wide Jumbo Fuselages Up 9 Wide Use Own Building Board Work Bench Base Mount Jig Station Uni-Strut Guide Rails Most Versatile Set-Up Contains Complete Hardware Instructions Including Uni-Strut Information Box 4 Standard Jig Stations 11795 Box 4 Jumbo Jig Stations 1995 TwoS ft long Guide Rails including mounting nuts 2195 20 kHz raster shift RC chan nels over 10 kHz ensure no RC channel would precisely commer cial channel Spacing channels 10 kHz intervals would far preferable dead especially capability newer narrow-band receivers After ing checked technical experts among committee members concept 10 kHz offset included updated 45page RM-3248 sent FCC September 1980 definition new channels truly exclusive because assigned FCC other user Still another round questions swers took place including briefing seven FCC Commissioners Fred Marks team late 1981 Bob Aberle became chairman AMA RC Frequency Committee 1981 happy Notice Proposed Rule Making last approved FCC May 1982 placed FCC ac tion chain comments parties AMA widely distributed contents new proposal RC industries hobby magazines national organizations cars boats AMA memberIVANS MAGIC GADGET protractor device used Ivan Kristensen accurately measure aileron elevator rudder throw takes guess work out trimming out airplane qualty tool complete instructions log book carrying case1795 PLUG-IN ADJUSTABLE STAB KIT last can optimize stab incidence best flight charac teristics pair glass filled nylon adjusters included provide micro screw adjustment smaller front tube Main tube aluminum matching phenolic sncket S695 Include $2 SOltem UPS esidents Add 6% Sales Tax GATOR RIC PRODUCTS 3713 Pompano Dr acola FL 32514 476-8639 ship Responses sources 99 percent favorable wont comment less percent neg ative responses received Following review comments re ceived FCC assembled final report order approving November 1982 Six years making 1982 FCC legislation milestone RC model ers awarded RC aircraft 50 channels RC boats cars receiving 30 frequency distribution expected use ful years come phase-in plan drawn up allow manufacturers users adapt new set frequencies between 1983 1991 first phase aircraft completed December 1987 final phase 50 channels scheduled 1991 What long significant effort culmi nating gratifying outcome Sixth Battle 40 years on-again off-again struggles FCC have Readers radio amateurs will have observed very little detail has de voted ham frequencies played such important role pioneering RC hobby still effective RC use PLUG-IN WING ADJUSTER KIT Four glass filled nylon brackets included key wing panels front rear allow accurately adjust panel straight flight Complete hardware & instructions1995 _ WING TUBE & SOCKETS Aluminum alloy tubing plug-in wings Included pair special slip-fit phenolic sorkets build wing structure Now size models 718 dia aS 895 ldiax2S 995 1diax311495 64 Model Aviation TAIBI 1/8-INCH3648 BALSA WOOD STIcKS 1/18-INCH3848 1/160111626 1116313207 1116x1/60611 1/I6o3/160913 1/1801/41015 1/1603/81317 1/161/21620 1/163/42128 3/32-INCH3848 3/323/320811 3/32 01/80913 3/32031161015 3/32 01/41316 3/3203/81419 3/32 01/21621 3/323/42431 Double Balsa Wood Prices Spruce Basswood Sticks 1/80 1/8 1/8 o 3116 1/80 1/4 1/8 0 318 1/801/3 1/80314 3/8-INCH3848 09113/803182737 11153/80 1/23041 13173/8o3144460 1621 17241/2-INCH3648 20331/2 0 1/23749 1/2 03145270 TRIANGULAR CUT BALSA 1/401/403624 3/8o3/8o3629 1/20 1/203637 3/4o3/4o3647 10103061 BALSA PLANKS 3/403036178 1x2o36184 103036230 104036303 202036230 203036329 204030464 3o3o36490 304030680 3/18-INCH3848 3/16031161317 3/180 1/41419 3/1803181621 3/160 1/21820 3/16 0 3142838 1/4-INCH3648 1/40 1/41621 1/403/81825 1/401/22129 1/403143142 B/i 8-INCH3848 9/160 5/162027 9/16 3182230 5/180 1/22736 5/16 3143952 BALSA SHEETS 1-INCH3848 1/160 12736 3/32013040 1/80 13344 3/16 13749 I/do 14157 3/8 0 19372 1/2 o 16588 2-INCH3648 1/32023040 1/160 23648 3/32 o 24154 1/8 024660 3/160 25472 1/4026384 3/80277103 3-INCH3848 1/32034053 1/16034358 3/32 35270 1/8036080 3/18 037295 1/40384112 5/1603103134 3/803130160 1/203150200 4-INCH3648 1/32046587 1/180473101 3/320482109 1/80495128 3/1604114151 1/404131193 3/804182271 1/202 113 150 1/204219325 BIRCH PLYWOOD 1/840120 12175 1/84012024350 1/64 012048700 1/64 a490482800 1/320601252 1/320120 12105 1/320 12024210 1/320 12049430 I/16o6o1252 1/180120 12108 1/18012024210 1/16o12040430 3/32o6o1291 3/320120 12163 3/32 012 0 24328 3/32 o12 0 48652 1/8o8o1289 1/8012012178 1/8012024356 1/8o12o49712 3116o6s1274 3/160120 12146 3/160120 24293 3/16 012o48585 1/40601274 1/40120 12146 1/4 012024293 1/4 012046585 3/80 120 12180 3/8 0 12 0 24360 318012048720 1/2 0120 12202 1/2 0120 24405 1/2 012048908 LITE PLYWOOD 1/901201256 1/80 12024112 1/8012048224 TAPERED TRAILING EDGE3648 1/80 1/22230 3/16 0 3/42940 1/40 I4255 5/16o 1/o4461 3/8o 15272 Superior Aircraft Materials 12020-G Centralla iian Gardens CalIfornia 90716 865-3220 Handling Charge -$500 $300 COD mum Order $2000 FOB Factory accept Peraonal checka COD fornia Recidenta add 6% Salea Tax today channels have coordi nated Amateur Radio Relay League Dick Jansson WD4FAB other RC hams over years RC channels li censed hams included summary follows Summary Comments1988 ac companying table summarizes ac quisitions changes RC frequen cies through confrontations negotia tions FCC over past 40 years retrospect frequency changes RC fliers over years due fact truly exclusive RC channels mercy other users numbers growing just rapidly needs rivals keep ing pace own 80 new RC channels literally ex clusive FCC has designated no other us ers RCers shouldnt vulnerable co-channel usersbecause shouldnt Adjacent non-RC channels will close 10 kHz possibly could cause trouble alternate RC chan nels provide fallback Fortunately sophisticated technology available implement required new narrow-band RC equipment German RC channels 35 MHz spaced 10 kHz intervals have use successfully almost 10 years Further recent reports dicate several companies already selling RC equipment meeting 1991 specifi cations reasonable cost future looks good wide frequency separation between RC Aircraft RC Surface Vehicle bands should prevent mutual interfer ence between two classes thank RC modelers RC dustry members national interna tional plane boat auto organizations have given support apprecia tion tremendous frequency acquisi tion effort AMA organization has carried out over past four decades expect present system RC-only channels workable hope 40 years RC frequency batfies FCC have reached end Weve quite lot practice deploying resources however need should arise Lets make certain value hard-earned frequencies asset understand importance using wisely care should serve us long long time come AMA Frequency Committee mem bers have contributed hours time toward acquisition RC channels deserve special thanks names follow AMA RC Frequency Committees 1946-1988 1946-1962 Walt GoodChairman MembersWillis Brown Warren Bartlett Clay Freese Ed Lorenz Howard McEntee Dick Schumacher William Stelmach 1963-1971 Ed LorenzChairman MembersWalt Good Maynard Hill Ver non MacNabb Howard McEntee John Phelps Jack Port Paul Runge 1972-1980 John StrongChairman MembersBob Aberle Jack Albrecht Walt Good Dick Jansson Fred Marks C Tor rey Williams 1981-1982 Bob AberleChairman MembersJack Albrecht Dave Brown Walt Good Bill Hershberger Dick Jans Continued page 157 Announcing thGQRBI7VERi Multi channel Nan dlaunch Competition* w Wingapan GlideriPlapa NEW LE1EL OF ORMANCE UHAZATD] 1JkYCH COMPETIOH 11PI NHV BE THE SAUE 1A * Sin@IJ uervoa up ConatruoMon HAS AX2D THE ORBITER EE 4061Eardvage / Llnkageg moluved OFFERS FL SPAN 1 REFLEZ JZFST Uhf THE LO1PESONI $aadlatampe Jar ear aew uatJeg Ow Newulefler IXOMD WZND 4F-J La Now Available $121230 Damson Roaa Bothell PtA 98021 206-776-8067 July 1989 65 DODGSON very smooth-running tail rotor unusually high degree control accuracy tail rotor drive system based 2mmdiameter steel drive shaft design has proved highly reliable Now shaft sup ported special brass tube tube needs lubricated initially over its entire length af ter installation drive system operates freely vibration requires no maintenance Magic Ranger brass tube set slot ted wood strip installed top fuselage boom open trainer version tube sus pended tail boom several supports main difference between open trainerconfiguration Magic fuselage-equipped Magic Ranger found tail boom canopy canopy assembled two halfshells fitted over radio equipment mechanical assembly secured side two knurled knobs complete servo sup port structure same both models tail boom Magic aluminum tube attached mechanical assembly us ing newly designed composite fixture solidly braced additional support tube Flexible landing gear supplied black stan dard although white now available op tion main rotor head control system System 88 virtually un changed Based control movements offset 450 system has proven outstand ingly effective has eliminated completely tendency model balloon dive flying forward fast speed new fea ture injection-molded servo structure As can see Magic sounds good its long blades tail boom should smooth capital S So much new stuff Its summer Get broken bird back together lets go fly BCNU RC Battle/Good Continued page 65 son Fred Marks John Strong C Torrey Williams 1983-1984 George MyersChairman MembersJack Albrecht Dave Brown Bill Hershberger John Lange Fred Marks Jim Oddino C Torrey Williams Al Watson ConsultantsBob Aberle Walt Good Dick Jansson 1985-1988 Fred MarksChairman MembersJack Albrecht Dave Brown Steve Helms Bill Hershberger Dave Hil senhoff George Myers Bob Novak Pete Waters Jim Oddino Warren Plohr George Steiner ConsultantsWalt Good Dick Jansson individual name cluded above listings has volved Frequency Committee since 1963 AMA president since became AMA ex ecutive director 1964 name John Worth John has longtime personal obses sion RC has contributed immeasur ably RC frequency story through executive capacity AMA Sorting through hundreds files preparing article Ive seen hand tying gether reporting RC Committees ef forts Thanks John being long-term contributing phantom member AMA RC Frequency Committee Pou du Ciel/Allison Continued page 71 mouflage lighter colors seen black-and-white photo such light grays blues Using artists airbrush opaque watercolors also called designers colors taped condenser paper over paper wing stab outlines cam ouflage patterns drawn method colors preshrinks covering operation fuselage bit trickier pattern used centered cowl cabin sections sides bottom sides left rightsort Scale model Ror schach inkblot shape painted three sets Id have extras mistakes repairs fuselage covered separate pieces sides lower sides upper cowl area lower cowl cabin roof Trial fit cabanes landing gear cabin side panels fuselage removing before covering fuselage pieces painted separately glued completed fuselage windshield added using RC-56 glue along edge cabin roof prepainted wind shield posts Glue rear edges windshield rear cabin posts before glu ing side panels posts did glue front bottom edge windshield top fuselage used Pactra enamel engine cylinders top cooling fins painted unit gloss black mix silver little cop per little dark gray dry brush lightly across cooling fins high lights edges fins giving cylin ders oily slightly rusted look takes exhausts get same treatment headbolts pushrods silver highlighting contrast Spark plugs rocker covers white Plug wires prop blades tires flat black dark gray MIAMA Pistachio Scale rules include three weight categories Category Iunder two grams Iltwo three grams III over three grams strategy try build lowest weight allowed par ticular category taking advantage close correlation between wing loading duration dont like ghost ships dont like empty calories either concen trate scale detail ie weight toward front end intention dazzling judges eye great en gine spinner gas cap etc barely notices paint job gets more transparent toward tail its lightweight rubdown registration numbers THE LEADER IN COMPETITION NEW THP DESIGN DIAPRICE 15 16 NEW PRO SERIES 3 II 1 NEW HIGH TECH AIRFOIL SECTION 10 TO 200/o INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 534 634 72833/,456 8334568 94566Io77 104566/7 106W8W 106EW 114677/o7/ol8 115W 116EW 1167 124W 125W 1256 1356 1456 1556 164/N 16678 RC PYLON RACING SERIES 500 DIA PITCHPRICE 75N 5N SERIES 400C 866T7/o7 977/,73/ W WIDE BLADE 0EW EXTRA WIDE N NARROW July 1989 157 PROPELLERS TAILORED HELICAL PITCH DEVELOPEDTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW PITCH THP 677/o8 677/6 67 678