George M Myers Radio Thchnque THE QUESTION What low-priced radio should buy 1988 toured some major RC systems sup pliers asking question Before give answers lets review what already know I Use frequencies 7208 7216 7224 7232 7240 7296 7564 MHz control model aircraft became illegal fed eral regulation effective December 20 1987 frequencies shared other high-powered services interfered model aviation much make useless some parts country FCC gave us five years get existing equipment converted RC38 through RC56 exclusively model aviation Converted sets suffer less interference canceled channels can still get old sets converted want 2 Effective January 1 1988 AMA decrees use narrow-band transmitters RC12 through RC34 replace above-listed can celed channels new channels also exclusively model aviation spaced 40 kHz RC38 through RC56 new requirement has imposed Ie narrowband transmitters ll permitted oper ate term narrow-band transmitter has defined AMA Guidelines have discussed length previous issues Model Aviation will find discus sions AMA News section Model Avia tion September through November 1987 3 PCM recent FM transmitters meet AMA Guidelines bandwidth narrow ness few AM transmitters also meet Guide lines Everyone talked RC industry equated AM lowest-priced system want talk about 1988 AM transmit ters have Airtronics Vanguard line modified Ace R/C Inc Silver Seven has shipped since April 1987 modified Pro-Line transmitters 1983 Tower Gold 500 transmitter measured 50 dB down 20 kHz its interchangeable crystals RC12 RC40 RC5O RC56 expect new Tower transmitter will qualify about Futaba Steve Helms told Futaba has technology make narrowband AM system sure new Airtronics Vanguard AM transmitter L shows its narrow-band performance Airtronics IFR spectrum analyzer new Airtronics low-priced line replaces earlier well-received SR line Larry Lloyd R aligns Airtronics RC systems using fixtures equip ment identical used Sanwa factory can keep equipment operating up factory specifications 32 Model Aviation Myers land cruiser fully loaded Airtronics plant Irvine CA just prove IRS author Myers really Mighty tank has over 100000 miles still quieter smoother Rolls-Royce ads used proclaim sevu Helms prepares test new proto type Futaba FM receiver Diablo Plane powered new YKS 120 four-stroke engine giving model unlimited vertical per formance radio subjected Myers/Aberle performance tests found superior anything else George has seen lowest price Im sure thats correct statement because 1976 Futaba Contest 7 AM transmitter met AMA Guidelines tested carefully phrased answer largest supplier RC systems asks rest story Paul Harvey saysthe receiver 1976 Futaba Contest 7 AM receiver narrow-banded AM receivers Ive seen does meet AMA Guidelines receivers Neither does other AM receiver have tested though some like Acoms receiver quite good may have noticed narrow-band receiv ers arent specified AMA 1988-1991 suspect Futaba doesnt intend sell narrow-band AM transmitters use RC 12 through RC34 being able offer match ing receivers hence qualified answer doesnt prevent selling existing lines RC38 through RC56 re quired transmit narrow-band per fectly acceptable AMA go little above lowest price can get excellent narrow-band performance Futaba Conquest PCM systems same can said FM sets have seen some prototype FM receivers very narrowband show amazing resistance interfer ence cheap Therein lies tale started column asking What low-priced RC system should buy 1988 vendors look AM systems fill low-priced end cat alog Except maybe Polks Aristo Craft/Hi-Tec 720 receiver part low-priced FM system considerable improvement over old 620 1988 flying field Lets get off onto another subjectone going very important practically RC flier Fred Marks discovered publicized fact order live together peaceably 50-channel 20-kHz raster ie 1991 AM transmitters must have sidehands suppressed better -55 dB 20 kHz signed frequency Myers/Aberle Aber le/Myers depending magazine read test results agree Freds findings tests wideband AM transmitters -30 -40 dB say using AM transmitters built before 1982 receivers show poorer performance against AM interference against FM tested against pair narrow-band Tower Gold 500 transmitters using various interchangeable crys tals receiver performance looks better What does mean Real World important meaning wideband AM interferes types receivers AM FM FM/PCM narrowhand FM does guy shifts old White/ Red AM transmitter new narrow-bandrequired channel RC22 instance will inter fere nice new 1988 set RC2O Whos fault Should new 1988 set able reject interference regardless what does new receiver could would have ideal situation spread-spectrum RC system does exist might give kind performance AM FM FM/PCM narrow-hand RC thought pa tently ridiculous Given enough transmitter power anything practical standpoint Im talking about signal 30 dBor about 1000 times stronger will interfere radio re Continued page 34 completely satisfied LOCTITE Spray Adhesive simply return unused portion us along sales receipt well refund money LOCTITE offers guarantee Available quality hobby craft shops everywhere LOCTITL 4450 Craeeood coart Cleveland 050 44128 216475 3600 20134 State CerAtos Cahtonia 90701 213 880-1278 iobavt 310 North 5th Street St Charles IIIjrojs 60174 312 584-7010 FRANK TIANO ENTERPRISES 2480 Socthaest 86th Terrace Davie Florida 33324 305 4732211 Loctite isa registered trademark Loctite corporation January 1988 33 ment its L local Hobby LOCTITE Spray will work guar antee Corporation Auto olive Consumer Group Cleveland Ohio 44128 WILLIAMS ACCESSORIES BROTHERS 4 PILOTS STANDARD TSMAN 0 RACING TARY WHEELS AGE TH CONTOUR BALLOON E 4 ENGINES PRATT & WHITNEY HT HONE PARABELLUM ILLJs AT ITS BEST t Weight l P-30 Size Models k Oh MOTORSFLIGHT BATTERIE 8-62 2x50 mAlir 9 gins Snap place moto No wiring resuired B-522o80 mAtlr13 gins$ S Same B-62 butwith autoso u 1 minutes 9-633x50 inAHr13 gins$13 5 "l shorte moto t,k hi PROPULSION SYSTEMS VI-iliB- $2495 Includes HY-70B Motor B-62 Battery 2 Props Charge Plug Connector Accessory Pkg screws spacers etc VL-l11BR$2795 Same VI-iliBhut HY-7OBR Motor Remote Flight Battery Holder R-t2 HY-lOB$1495 An improved HY-70 Features reinforced prop shaft neoprene sleeve engage disengage Free-wheeling 14Y-JOBR$1795 Same HY-7tB hut equipped Remote Flight Bottery Hulder er has 7 awls nionk disconnects Slide hattery ceiver except using spread-spectrum technique Since received power falls off fourth power distance between RC transmitter its receiver B advantage inter ferer just matter distance plane flies transmitter closer model stays transmitter less opportu niuy interference get Helicopters have advantage because sel dom fly very far control transmitter other hand Sailplanes probably susceptible interference because fly long distance transmitters also points way alleviating inter ference problem may have Move away talk suppressing sidebands say narrow-banding transmitter really talking about suppressing power interfere whole point AMA argument got us new exclusive channels no way low-power system can share radio frequency channel highpower interferer see above argument systems radiate essentially same power power sidebands properly suppressed sharing pos sible RC transmitters models limited FCC half-dipole antenna taken AMA Guidelines makes RC systems essentially equal So going make sure old chan nels abandoned nobody shifts old wideband AM set onto new narrow-band RC channel YOU friend dont no will FCC might make exam ple guy just make point about enforcement well get AMA cant much educate people what am trying right now user RC channels expected police use channels makes situation similar Hams among us Hams have police use Ham bands convincing other Hams use properly Ham Amateur Radio operatorEd someone shows up AMA Nato AMA-hosted World Championships person will met processing table AMA spectrum analyzer use will clearly sep arate narrow-banders widebanders owners said wideband transmitters operat ing channels RC12 through RC34 will permitted use AMA-sponsored competitions about club competitions CC AA sanctions approximately AMA really cant require local Contest Director equip him self spectrum analyzer cost bun dle best could done would provide him list equipment known satisfactory compilation such list could involve legal problems Also such list probably never will catch up latest offering fav orite vendor end comes down YOU right thing teach non-AMA people right thing should can enjoy new low band RC12 through RC34 will significantly freer interference concerns situa tion have far Whats right thing 1 Only use narrow-band AM FM FM/PCM transmitters new channels Continued page 138 34 Model Aviation SEND $3 FOR FULLY ILLUSTRATED CATALOG DEPT MA iAWNEE ST SAN MARCOS CALIFORNIA 92069 Lots enjoy outdoorSin Comfort Little World Comfort Hot Burning Summer Days Convenient Six Portable Shade Thate Quick Set Up Change Instantly Give Protection Weather Size 72x120 60 sq ft Asbg make rt itcac large want becausa add-nfl units douffle filyM etc thence 01 Potta-Shades ate acailaffle Add-nfl units can used Salle awnings paso conets etc Out TRAK LOK-EYE KITS waite easy Potta-Ohade N/V aquvped wE teounted canopy flack canopy sflcog weterproot heat renectng naterot adrite weiner top sideladthunivvekey-boie cornet Offing no orornmetu hau no center pole Stare nrwe useabe space sbaddle oric table ot arn0d anpiane ltstandsalrncstl tall sOongt alo erinurn potes can stand nook ar play onder conriori Itisunod rearstanttefited todO MPH MECHANICS TOTE-TARP eqoipped heodes rivited tout comets naudy pronide adean dry suttace tot field tepeirs weanrer covet tot equipment against sun rain Free literabare available dM prodocts Please note new address 5 phone number 4M Company Dept BSportsman Modal PFP d-eO$3095 UPS 209 SW Bucy AvenueEconomy Modal EPFR d-eO$3295 $3 SOUPS Add-A-Shade Model APP dES$2995 n $3 SOUPS Barticevilie OK 74003RNTrack-Lok-EyeKit$lSSSvStSOUPS Phone 9181336-9445Mealtanics Tote-Tarp 4oe$ 99551 SOUPS MaetarCardVIsaCOD-MeOeY Ordera~CheebeDatar Inqables InvIted PRACTICAL SIZED GIANT Fiberolass Cowlings Canopies Available Plans sent Post-Paid within USA Send 5O Full Catalog Balsa Nick Ziroli 29 Edgar Dr Smithtown NY 11787 USA MODELS byNICKZIROI-I Jets too 516-234-5038 Aileron range 34 up % down whet appetite seasons fun-fly competition stats Scorpion nine recent fun-fly contests 18 first-place awards 16 second-place awards 12 third-place awards isnt impressive enough Scor pion flown exclusively 1985 high point winner High Plains Radio Control Association Kansas Oklahoma Texas New Mexico Colorado As name implies fun-fly intended just flown fun same time participants didnt care about winning no would keep score some practice little self-confidence vm *M MO AU HEN EMOlb SCALE 03 PLANS a-ID NANNNEVIATID NA34E 24 SVaaght Cans P40 20SLt2tO525 65935 NS569 15Can J845 Jasay 211332146528 86 4EAF NE2Nt C 19929105824 29Wace TepeeWIsE 15112212452 36Weatled Lysandee 25143716752 25Dane 0460 Sheer 231434166832 29See 100 SurE 15152212 33SCm TI laretee 302545289056 12 35__ inPashasd Lunas 11 21113112 39Cal P36A Fights 18122814211233 25Vet Case 0201/4 58132714 38Can Calico PSYSs 5239784 19Castlas t4C4 946 17Pahhes 87 PEe 1492110 31Naples GeOne 1171785516 57~7052 13Saperurasins S6s 1572284416 6024803 36Gene OnlNhOwk 1472180316 NS 35Lash Electra #11 271841208240 Lank lies039 43SIns Avenges TOP 301440165032 Psed tt4AT48 42ens 8170 P1 Past 51327735 8170555 38NA Mitchell N25 36265529 2549 34ttseslCaeEaIMC72 157230 N82649 37Car Navy 503C1 19920155720 StIsATel42 25Censar E3C1&2 1101193318NadlyPSee49 34Sane Teassy SC3 47327135 DC 355 33Cult Nash P61 1512231 2Doallttlsa GeOll 121218143224 49367448 31Baa P45344 P128 151422164526 60399059 32Spefid NailDog 134920154020 5 38043 32Nauned Iks&N1he 10715831166245 34Tassels 557 Nasal 13719483916 375835 t5Nnw Na MullIgan 16923104720623545 33800 P26A Law wsg 14112112422463368448 35Stlsana 7ti SNi 20730 4258 Meaqaite Nash 371941228142 108% 37Stesesas P717 16924104928 43N NIh Widow PNi 333249359969 50TANS Nuha 75513 14721843191 12C5N2C4 RelIdiwa 253037357455 56PaId ThenCe hAT 3o 32 57 36 11465 31Sellansa Nsa 322048249640 33Glans 123 Snsh* 19182920Sf3 27C Sanhauk F7Cl 151223144728 63" 28Ilk Anyklh S38 3625542804 168PEe 5450 Sash 50327535 31Llodya LSlelse 2111311253 ia 10 Plasta 10514 3180w Nasal P510151503166032 31C Opaehwk P9C212121914 3828755507656 31Beelne PIe P45315142254452660399059 30Tannra PlaInIp12918103720493574 5 28Laasle12Asp42321352470529369 ROAD NEPONE OSIENING*318 SCALE 37/32 NIZE PLANS AVAILASLE AT ONE MININlIN 001101SOlDOLLAR UNDERtION SIZE SE SINE TO ASS TOE DID- PRICES FOR ALL DESIGNS AL 10% P55 PACKAGING POSTAGE AND INSINANCE ANGST TOOlS ND ADDITS SAL PLANS 5 MAST SIZES SSs-S7S CATALOG 5200 03/ PSICI LIST ALONE 51 55 415 FOREIGN 53 eve anode anuppy hourS PockedOIClrOflSNll FseodSiC 19/9"s"50' 703073 SIreN/I 001801CIENELANS ON/S 44102 138 Model Aviation can find yourself right up among leaders next fun-flyand Scor pion can help get Radio Technique/Myers Continued page 34 RCt2 through RC34 2 under circumstances crystalswap old AM set new low-band chan nel Dont fly anyone has done insists knows right ess person can show spectrum alyzer knows what talking about 3 If suffer interference spread out Make use Owen Blacks Pacific plan see column May 1987 issueor something equivalentto set up flight lines minimize possible interference combinations ITS ALL UP TO YOU George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Premiered/Berman Continued page 44 well plane climbs straight up until engine cuts out after 10 seconds Now plane levels out becomes glider air borne full time two minutes being opti mal plane gives fuse its chance rubberband zapped stabilator pops up cruiser DTs dethermal izes ideal course things ship now descends gently sometimes por poising motion lands too far away Nebraska winds behave didnt mostly Retrieval came matter strenuous cross-country trek resourceful Free Flight ers eased saddling up motorbikes ATVs Few midair worries contest Cunningham family anyway Gas challenging enough have bridged generation gap Vic Sr AMA No 984 won Nats 1957 Vic Jr re peated feat 1968 Olathe KS plane own design Now grandson Jeff showing sign being primed same distinction Guess some us have shown planes can fly radio stuffing Another stellar Nats event Wed nesday night banquet held huge hall Lincoln fairgrounds Guest speaker Burt Rutan uncon ventional canards designs Per haps 400 modelers wives listened spellbinding account perils Voyager Burt left no doubt anyones mind despite its successful conclusion brother Dick copilot Jeana Yeager definitely risk during historic flight thing Voyager never flown full takeoff weight prior record attempt Second some fuel leakage resulted wing tips scraping during takeoff roll Equally serious crew discomfort result tossing motion 4 DC-a15 1140 Span$4200 F4U CORSAIR251 Span$3000 A6M5 ZERO251 Span$3000 CURTIS P40251 Span$3000 AT-6 TEXAN24 Span$3000 F8F BEARCAT25 Spans3000 FOKKERDR-1 27 Trips82700 Order Plans RK-20 RK-740 Ducted Fans Phantom35 span$1000 Viggan32 span$1000 F-iS38 span$1000 Plan canopy$1500 Carry tile Largest anl Only Stock Kratt Parts World raf alive working KRAFT MIDWEST Authonzed Warranty Service FREQUENCY CONVERSION $1000 Discount Regular Repair Most Makes Models Converted Tuning Donewith Spectrum Analyzer KRiiK-LINE Also Service AU E/ Futabasaacs Only Full Time Servicenter Ihe Midwest 117 East Main St Northvil le Michigan -iC 48167 E Upper Level Phone 1 -313-348-0085
Edition: Model Aviation - 1988/01
Page Numbers: 32, 33, 34, 138
Edition: Model Aviation - 1988/01
Page Numbers: 32, 33, 34, 138
George M Myers Radio Thchnque THE QUESTION What low-priced radio should buy 1988 toured some major RC systems sup pliers asking question Before give answers lets review what already know I Use frequencies 7208 7216 7224 7232 7240 7296 7564 MHz control model aircraft became illegal fed eral regulation effective December 20 1987 frequencies shared other high-powered services interfered model aviation much make useless some parts country FCC gave us five years get existing equipment converted RC38 through RC56 exclusively model aviation Converted sets suffer less interference canceled channels can still get old sets converted want 2 Effective January 1 1988 AMA decrees use narrow-band transmitters RC12 through RC34 replace above-listed can celed channels new channels also exclusively model aviation spaced 40 kHz RC38 through RC56 new requirement has imposed Ie narrowband transmitters ll permitted oper ate term narrow-band transmitter has defined AMA Guidelines have discussed length previous issues Model Aviation will find discus sions AMA News section Model Avia tion September through November 1987 3 PCM recent FM transmitters meet AMA Guidelines bandwidth narrow ness few AM transmitters also meet Guide lines Everyone talked RC industry equated AM lowest-priced system want talk about 1988 AM transmit ters have Airtronics Vanguard line modified Ace R/C Inc Silver Seven has shipped since April 1987 modified Pro-Line transmitters 1983 Tower Gold 500 transmitter measured 50 dB down 20 kHz its interchangeable crystals RC12 RC40 RC5O RC56 expect new Tower transmitter will qualify about Futaba Steve Helms told Futaba has technology make narrowband AM system sure new Airtronics Vanguard AM transmitter L shows its narrow-band performance Airtronics IFR spectrum analyzer new Airtronics low-priced line replaces earlier well-received SR line Larry Lloyd R aligns Airtronics RC systems using fixtures equip ment identical used Sanwa factory can keep equipment operating up factory specifications 32 Model Aviation Myers land cruiser fully loaded Airtronics plant Irvine CA just prove IRS author Myers really Mighty tank has over 100000 miles still quieter smoother Rolls-Royce ads used proclaim sevu Helms prepares test new proto type Futaba FM receiver Diablo Plane powered new YKS 120 four-stroke engine giving model unlimited vertical per formance radio subjected Myers/Aberle performance tests found superior anything else George has seen lowest price Im sure thats correct statement because 1976 Futaba Contest 7 AM transmitter met AMA Guidelines tested carefully phrased answer largest supplier RC systems asks rest story Paul Harvey saysthe receiver 1976 Futaba Contest 7 AM receiver narrow-banded AM receivers Ive seen does meet AMA Guidelines receivers Neither does other AM receiver have tested though some like Acoms receiver quite good may have noticed narrow-band receiv ers arent specified AMA 1988-1991 suspect Futaba doesnt intend sell narrow-band AM transmitters use RC 12 through RC34 being able offer match ing receivers hence qualified answer doesnt prevent selling existing lines RC38 through RC56 re quired transmit narrow-band per fectly acceptable AMA go little above lowest price can get excellent narrow-band performance Futaba Conquest PCM systems same can said FM sets have seen some prototype FM receivers very narrowband show amazing resistance interfer ence cheap Therein lies tale started column asking What low-priced RC system should buy 1988 vendors look AM systems fill low-priced end cat alog Except maybe Polks Aristo Craft/Hi-Tec 720 receiver part low-priced FM system considerable improvement over old 620 1988 flying field Lets get off onto another subjectone going very important practically RC flier Fred Marks discovered publicized fact order live together peaceably 50-channel 20-kHz raster ie 1991 AM transmitters must have sidehands suppressed better -55 dB 20 kHz signed frequency Myers/Aberle Aber le/Myers depending magazine read test results agree Freds findings tests wideband AM transmitters -30 -40 dB say using AM transmitters built before 1982 receivers show poorer performance against AM interference against FM tested against pair narrow-band Tower Gold 500 transmitters using various interchangeable crys tals receiver performance looks better What does mean Real World important meaning wideband AM interferes types receivers AM FM FM/PCM narrowhand FM does guy shifts old White/ Red AM transmitter new narrow-bandrequired channel RC22 instance will inter fere nice new 1988 set RC2O Whos fault Should new 1988 set able reject interference regardless what does new receiver could would have ideal situation spread-spectrum RC system does exist might give kind performance AM FM FM/PCM narrow-hand RC thought pa tently ridiculous Given enough transmitter power anything practical standpoint Im talking about signal 30 dBor about 1000 times stronger will interfere radio re Continued page 34 completely satisfied LOCTITE Spray Adhesive simply return unused portion us along sales receipt well refund money LOCTITE offers guarantee Available quality hobby craft shops everywhere LOCTITL 4450 Craeeood coart Cleveland 050 44128 216475 3600 20134 State CerAtos Cahtonia 90701 213 880-1278 iobavt 310 North 5th Street St Charles IIIjrojs 60174 312 584-7010 FRANK TIANO ENTERPRISES 2480 Socthaest 86th Terrace Davie Florida 33324 305 4732211 Loctite isa registered trademark Loctite corporation January 1988 33 ment its L local Hobby LOCTITE Spray will work guar antee Corporation Auto olive Consumer Group Cleveland Ohio 44128 WILLIAMS ACCESSORIES BROTHERS 4 PILOTS STANDARD TSMAN 0 RACING TARY WHEELS AGE TH CONTOUR BALLOON E 4 ENGINES PRATT & WHITNEY HT HONE PARABELLUM ILLJs AT ITS BEST t Weight l P-30 Size Models k Oh MOTORSFLIGHT BATTERIE 8-62 2x50 mAlir 9 gins Snap place moto No wiring resuired B-522o80 mAtlr13 gins$ S Same B-62 butwith autoso u 1 minutes 9-633x50 inAHr13 gins$13 5 "l shorte moto t,k hi PROPULSION SYSTEMS VI-iliB- $2495 Includes HY-70B Motor B-62 Battery 2 Props Charge Plug Connector Accessory Pkg screws spacers etc VL-l11BR$2795 Same VI-iliBhut HY-7OBR Motor Remote Flight Battery Holder R-t2 HY-lOB$1495 An improved HY-70 Features reinforced prop shaft neoprene sleeve engage disengage Free-wheeling 14Y-JOBR$1795 Same HY-7tB hut equipped Remote Flight Bottery Hulder er has 7 awls nionk disconnects Slide hattery ceiver except using spread-spectrum technique Since received power falls off fourth power distance between RC transmitter its receiver B advantage inter ferer just matter distance plane flies transmitter closer model stays transmitter less opportu niuy interference get Helicopters have advantage because sel dom fly very far control transmitter other hand Sailplanes probably susceptible interference because fly long distance transmitters also points way alleviating inter ference problem may have Move away talk suppressing sidebands say narrow-banding transmitter really talking about suppressing power interfere whole point AMA argument got us new exclusive channels no way low-power system can share radio frequency channel highpower interferer see above argument systems radiate essentially same power power sidebands properly suppressed sharing pos sible RC transmitters models limited FCC half-dipole antenna taken AMA Guidelines makes RC systems essentially equal So going make sure old chan nels abandoned nobody shifts old wideband AM set onto new narrow-band RC channel YOU friend dont no will FCC might make exam ple guy just make point about enforcement well get AMA cant much educate people what am trying right now user RC channels expected police use channels makes situation similar Hams among us Hams have police use Ham bands convincing other Hams use properly Ham Amateur Radio operatorEd someone shows up AMA Nato AMA-hosted World Championships person will met processing table AMA spectrum analyzer use will clearly sep arate narrow-banders widebanders owners said wideband transmitters operat ing channels RC12 through RC34 will permitted use AMA-sponsored competitions about club competitions CC AA sanctions approximately AMA really cant require local Contest Director equip him self spectrum analyzer cost bun dle best could done would provide him list equipment known satisfactory compilation such list could involve legal problems Also such list probably never will catch up latest offering fav orite vendor end comes down YOU right thing teach non-AMA people right thing should can enjoy new low band RC12 through RC34 will significantly freer interference concerns situa tion have far Whats right thing 1 Only use narrow-band AM FM FM/PCM transmitters new channels Continued page 138 34 Model Aviation SEND $3 FOR FULLY ILLUSTRATED CATALOG DEPT MA iAWNEE ST SAN MARCOS CALIFORNIA 92069 Lots enjoy outdoorSin Comfort Little World Comfort Hot Burning Summer Days Convenient Six Portable Shade Thate Quick Set Up Change Instantly Give Protection Weather Size 72x120 60 sq ft Asbg make rt itcac large want becausa add-nfl units douffle filyM etc thence 01 Potta-Shades ate acailaffle Add-nfl units can used Salle awnings paso conets etc Out TRAK LOK-EYE KITS waite easy Potta-Ohade N/V aquvped wE teounted canopy flack canopy sflcog weterproot heat renectng naterot adrite weiner top sideladthunivvekey-boie cornet Offing no orornmetu hau no center pole Stare nrwe useabe space sbaddle oric table ot arn0d anpiane ltstandsalrncstl tall sOongt alo erinurn potes can stand nook ar play onder conriori Itisunod rearstanttefited todO MPH MECHANICS TOTE-TARP eqoipped heodes rivited tout comets naudy pronide adean dry suttace tot field tepeirs weanrer covet tot equipment against sun rain Free literabare available dM prodocts Please note new address 5 phone number 4M Company Dept BSportsman Modal PFP d-eO$3095 UPS 209 SW Bucy AvenueEconomy Modal EPFR d-eO$3295 $3 SOUPS Add-A-Shade Model APP dES$2995 n $3 SOUPS Barticevilie OK 74003RNTrack-Lok-EyeKit$lSSSvStSOUPS Phone 9181336-9445Mealtanics Tote-Tarp 4oe$ 99551 SOUPS MaetarCardVIsaCOD-MeOeY Ordera~CheebeDatar Inqables InvIted PRACTICAL SIZED GIANT Fiberolass Cowlings Canopies Available Plans sent Post-Paid within USA Send 5O Full Catalog Balsa Nick Ziroli 29 Edgar Dr Smithtown NY 11787 USA MODELS byNICKZIROI-I Jets too 516-234-5038 Aileron range 34 up % down whet appetite seasons fun-fly competition stats Scorpion nine recent fun-fly contests 18 first-place awards 16 second-place awards 12 third-place awards isnt impressive enough Scor pion flown exclusively 1985 high point winner High Plains Radio Control Association Kansas Oklahoma Texas New Mexico Colorado As name implies fun-fly intended just flown fun same time participants didnt care about winning no would keep score some practice little self-confidence vm *M MO AU HEN EMOlb SCALE 03 PLANS a-ID NANNNEVIATID NA34E 24 SVaaght Cans P40 20SLt2tO525 65935 NS569 15Can J845 Jasay 211332146528 86 4EAF NE2Nt C 19929105824 29Wace TepeeWIsE 15112212452 36Weatled Lysandee 25143716752 25Dane 0460 Sheer 231434166832 29See 100 SurE 15152212 33SCm TI laretee 302545289056 12 35__ inPashasd Lunas 11 21113112 39Cal P36A Fights 18122814211233 25Vet Case 0201/4 58132714 38Can Calico PSYSs 5239784 19Castlas t4C4 946 17Pahhes 87 PEe 1492110 31Naples GeOne 1171785516 57~7052 13Saperurasins S6s 1572284416 6024803 36Gene OnlNhOwk 1472180316 NS 35Lash Electra #11 271841208240 Lank lies039 43SIns Avenges TOP 301440165032 Psed tt4AT48 42ens 8170 P1 Past 51327735 8170555 38NA Mitchell N25 36265529 2549 34ttseslCaeEaIMC72 157230 N82649 37Car Navy 503C1 19920155720 StIsATel42 25Censar E3C1&2 1101193318NadlyPSee49 34Sane Teassy SC3 47327135 DC 355 33Cult Nash P61 1512231 2Doallttlsa GeOll 121218143224 49367448 31Baa P45344 P128 151422164526 60399059 32Spefid NailDog 134920154020 5 38043 32Nauned Iks&N1he 10715831166245 34Tassels 557 Nasal 13719483916 375835 t5Nnw Na MullIgan 16923104720623545 33800 P26A Law wsg 14112112422463368448 35Stlsana 7ti SNi 20730 4258 Meaqaite Nash 371941228142 108% 37Stesesas P717 16924104928 43N NIh Widow PNi 333249359969 50TANS Nuha 75513 14721843191 12C5N2C4 RelIdiwa 253037357455 56PaId ThenCe hAT 3o 32 57 36 11465 31Sellansa Nsa 322048249640 33Glans 123 Snsh* 19182920Sf3 27C Sanhauk F7Cl 151223144728 63" 28Ilk Anyklh S38 3625542804 168PEe 5450 Sash 50327535 31Llodya LSlelse 2111311253 ia 10 Plasta 10514 3180w Nasal P510151503166032 31C Opaehwk P9C212121914 3828755507656 31Beelne PIe P45315142254452660399059 30Tannra PlaInIp12918103720493574 5 28Laasle12Asp42321352470529369 ROAD NEPONE OSIENING*318 SCALE 37/32 NIZE PLANS AVAILASLE AT ONE MININlIN 001101SOlDOLLAR UNDERtION SIZE SE SINE TO ASS TOE DID- PRICES FOR ALL DESIGNS AL 10% P55 PACKAGING POSTAGE AND INSINANCE ANGST TOOlS ND ADDITS SAL PLANS 5 MAST SIZES SSs-S7S CATALOG 5200 03/ PSICI LIST ALONE 51 55 415 FOREIGN 53 eve anode anuppy hourS PockedOIClrOflSNll FseodSiC 19/9"s"50' 703073 SIreN/I 001801CIENELANS ON/S 44102 138 Model Aviation can find yourself right up among leaders next fun-flyand Scor pion can help get Radio Technique/Myers Continued page 34 RCt2 through RC34 2 under circumstances crystalswap old AM set new low-band chan nel Dont fly anyone has done insists knows right ess person can show spectrum alyzer knows what talking about 3 If suffer interference spread out Make use Owen Blacks Pacific plan see column May 1987 issueor something equivalentto set up flight lines minimize possible interference combinations ITS ALL UP TO YOU George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Premiered/Berman Continued page 44 well plane climbs straight up until engine cuts out after 10 seconds Now plane levels out becomes glider air borne full time two minutes being opti mal plane gives fuse its chance rubberband zapped stabilator pops up cruiser DTs dethermal izes ideal course things ship now descends gently sometimes por poising motion lands too far away Nebraska winds behave didnt mostly Retrieval came matter strenuous cross-country trek resourceful Free Flight ers eased saddling up motorbikes ATVs Few midair worries contest Cunningham family anyway Gas challenging enough have bridged generation gap Vic Sr AMA No 984 won Nats 1957 Vic Jr re peated feat 1968 Olathe KS plane own design Now grandson Jeff showing sign being primed same distinction Guess some us have shown planes can fly radio stuffing Another stellar Nats event Wed nesday night banquet held huge hall Lincoln fairgrounds Guest speaker Burt Rutan uncon ventional canards designs Per haps 400 modelers wives listened spellbinding account perils Voyager Burt left no doubt anyones mind despite its successful conclusion brother Dick copilot Jeana Yeager definitely risk during historic flight thing Voyager never flown full takeoff weight prior record attempt Second some fuel leakage resulted wing tips scraping during takeoff roll Equally serious crew discomfort result tossing motion 4 DC-a15 1140 Span$4200 F4U CORSAIR251 Span$3000 A6M5 ZERO251 Span$3000 CURTIS P40251 Span$3000 AT-6 TEXAN24 Span$3000 F8F BEARCAT25 Spans3000 FOKKERDR-1 27 Trips82700 Order Plans RK-20 RK-740 Ducted Fans Phantom35 span$1000 Viggan32 span$1000 F-iS38 span$1000 Plan canopy$1500 Carry tile Largest anl Only Stock Kratt Parts World raf alive working KRAFT MIDWEST Authonzed Warranty Service FREQUENCY CONVERSION $1000 Discount Regular Repair Most Makes Models Converted Tuning Donewith Spectrum Analyzer KRiiK-LINE Also Service AU E/ Futabasaacs Only Full Time Servicenter Ihe Midwest 117 East Main St Northvil le Michigan -iC 48167 E Upper Level Phone 1 -313-348-0085
Edition: Model Aviation - 1988/01
Page Numbers: 32, 33, 34, 138
George M Myers Radio Thchnque THE QUESTION What low-priced radio should buy 1988 toured some major RC systems sup pliers asking question Before give answers lets review what already know I Use frequencies 7208 7216 7224 7232 7240 7296 7564 MHz control model aircraft became illegal fed eral regulation effective December 20 1987 frequencies shared other high-powered services interfered model aviation much make useless some parts country FCC gave us five years get existing equipment converted RC38 through RC56 exclusively model aviation Converted sets suffer less interference canceled channels can still get old sets converted want 2 Effective January 1 1988 AMA decrees use narrow-band transmitters RC12 through RC34 replace above-listed can celed channels new channels also exclusively model aviation spaced 40 kHz RC38 through RC56 new requirement has imposed Ie narrowband transmitters ll permitted oper ate term narrow-band transmitter has defined AMA Guidelines have discussed length previous issues Model Aviation will find discus sions AMA News section Model Avia tion September through November 1987 3 PCM recent FM transmitters meet AMA Guidelines bandwidth narrow ness few AM transmitters also meet Guide lines Everyone talked RC industry equated AM lowest-priced system want talk about 1988 AM transmit ters have Airtronics Vanguard line modified Ace R/C Inc Silver Seven has shipped since April 1987 modified Pro-Line transmitters 1983 Tower Gold 500 transmitter measured 50 dB down 20 kHz its interchangeable crystals RC12 RC40 RC5O RC56 expect new Tower transmitter will qualify about Futaba Steve Helms told Futaba has technology make narrowband AM system sure new Airtronics Vanguard AM transmitter L shows its narrow-band performance Airtronics IFR spectrum analyzer new Airtronics low-priced line replaces earlier well-received SR line Larry Lloyd R aligns Airtronics RC systems using fixtures equip ment identical used Sanwa factory can keep equipment operating up factory specifications 32 Model Aviation Myers land cruiser fully loaded Airtronics plant Irvine CA just prove IRS author Myers really Mighty tank has over 100000 miles still quieter smoother Rolls-Royce ads used proclaim sevu Helms prepares test new proto type Futaba FM receiver Diablo Plane powered new YKS 120 four-stroke engine giving model unlimited vertical per formance radio subjected Myers/Aberle performance tests found superior anything else George has seen lowest price Im sure thats correct statement because 1976 Futaba Contest 7 AM transmitter met AMA Guidelines tested carefully phrased answer largest supplier RC systems asks rest story Paul Harvey saysthe receiver 1976 Futaba Contest 7 AM receiver narrow-banded AM receivers Ive seen does meet AMA Guidelines receivers Neither does other AM receiver have tested though some like Acoms receiver quite good may have noticed narrow-band receiv ers arent specified AMA 1988-1991 suspect Futaba doesnt intend sell narrow-band AM transmitters use RC 12 through RC34 being able offer match ing receivers hence qualified answer doesnt prevent selling existing lines RC38 through RC56 re quired transmit narrow-band per fectly acceptable AMA go little above lowest price can get excellent narrow-band performance Futaba Conquest PCM systems same can said FM sets have seen some prototype FM receivers very narrowband show amazing resistance interfer ence cheap Therein lies tale started column asking What low-priced RC system should buy 1988 vendors look AM systems fill low-priced end cat alog Except maybe Polks Aristo Craft/Hi-Tec 720 receiver part low-priced FM system considerable improvement over old 620 1988 flying field Lets get off onto another subjectone going very important practically RC flier Fred Marks discovered publicized fact order live together peaceably 50-channel 20-kHz raster ie 1991 AM transmitters must have sidehands suppressed better -55 dB 20 kHz signed frequency Myers/Aberle Aber le/Myers depending magazine read test results agree Freds findings tests wideband AM transmitters -30 -40 dB say using AM transmitters built before 1982 receivers show poorer performance against AM interference against FM tested against pair narrow-band Tower Gold 500 transmitters using various interchangeable crys tals receiver performance looks better What does mean Real World important meaning wideband AM interferes types receivers AM FM FM/PCM narrowhand FM does guy shifts old White/ Red AM transmitter new narrow-bandrequired channel RC22 instance will inter fere nice new 1988 set RC2O Whos fault Should new 1988 set able reject interference regardless what does new receiver could would have ideal situation spread-spectrum RC system does exist might give kind performance AM FM FM/PCM narrow-hand RC thought pa tently ridiculous Given enough transmitter power anything practical standpoint Im talking about signal 30 dBor about 1000 times stronger will interfere radio re Continued page 34 completely satisfied LOCTITE Spray Adhesive simply return unused portion us along sales receipt well refund money LOCTITE offers guarantee Available quality hobby craft shops everywhere LOCTITL 4450 Craeeood coart Cleveland 050 44128 216475 3600 20134 State CerAtos Cahtonia 90701 213 880-1278 iobavt 310 North 5th Street St Charles IIIjrojs 60174 312 584-7010 FRANK TIANO ENTERPRISES 2480 Socthaest 86th Terrace Davie Florida 33324 305 4732211 Loctite isa registered trademark Loctite corporation January 1988 33 ment its L local Hobby LOCTITE Spray will work guar antee Corporation Auto olive Consumer Group Cleveland Ohio 44128 WILLIAMS ACCESSORIES BROTHERS 4 PILOTS STANDARD TSMAN 0 RACING TARY WHEELS AGE TH CONTOUR BALLOON E 4 ENGINES PRATT & WHITNEY HT HONE PARABELLUM ILLJs AT ITS BEST t Weight l P-30 Size Models k Oh MOTORSFLIGHT BATTERIE 8-62 2x50 mAlir 9 gins Snap place moto No wiring resuired B-522o80 mAtlr13 gins$ S Same B-62 butwith autoso u 1 minutes 9-633x50 inAHr13 gins$13 5 "l shorte moto t,k hi PROPULSION SYSTEMS VI-iliB- $2495 Includes HY-70B Motor B-62 Battery 2 Props Charge Plug Connector Accessory Pkg screws spacers etc VL-l11BR$2795 Same VI-iliBhut HY-7OBR Motor Remote Flight Battery Holder R-t2 HY-lOB$1495 An improved HY-70 Features reinforced prop shaft neoprene sleeve engage disengage Free-wheeling 14Y-JOBR$1795 Same HY-7tB hut equipped Remote Flight Bottery Hulder er has 7 awls nionk disconnects Slide hattery ceiver except using spread-spectrum technique Since received power falls off fourth power distance between RC transmitter its receiver B advantage inter ferer just matter distance plane flies transmitter closer model stays transmitter less opportu niuy interference get Helicopters have advantage because sel dom fly very far control transmitter other hand Sailplanes probably susceptible interference because fly long distance transmitters also points way alleviating inter ference problem may have Move away talk suppressing sidebands say narrow-banding transmitter really talking about suppressing power interfere whole point AMA argument got us new exclusive channels no way low-power system can share radio frequency channel highpower interferer see above argument systems radiate essentially same power power sidebands properly suppressed sharing pos sible RC transmitters models limited FCC half-dipole antenna taken AMA Guidelines makes RC systems essentially equal So going make sure old chan nels abandoned nobody shifts old wideband AM set onto new narrow-band RC channel YOU friend dont no will FCC might make exam ple guy just make point about enforcement well get AMA cant much educate people what am trying right now user RC channels expected police use channels makes situation similar Hams among us Hams have police use Ham bands convincing other Hams use properly Ham Amateur Radio operatorEd someone shows up AMA Nato AMA-hosted World Championships person will met processing table AMA spectrum analyzer use will clearly sep arate narrow-banders widebanders owners said wideband transmitters operat ing channels RC12 through RC34 will permitted use AMA-sponsored competitions about club competitions CC AA sanctions approximately AMA really cant require local Contest Director equip him self spectrum analyzer cost bun dle best could done would provide him list equipment known satisfactory compilation such list could involve legal problems Also such list probably never will catch up latest offering fav orite vendor end comes down YOU right thing teach non-AMA people right thing should can enjoy new low band RC12 through RC34 will significantly freer interference concerns situa tion have far Whats right thing 1 Only use narrow-band AM FM FM/PCM transmitters new channels Continued page 138 34 Model Aviation SEND $3 FOR FULLY ILLUSTRATED CATALOG DEPT MA iAWNEE ST SAN MARCOS CALIFORNIA 92069 Lots enjoy outdoorSin Comfort Little World Comfort Hot Burning Summer Days Convenient Six Portable Shade Thate Quick Set Up Change Instantly Give Protection Weather Size 72x120 60 sq ft Asbg make rt itcac large want becausa add-nfl units douffle filyM etc thence 01 Potta-Shades ate acailaffle Add-nfl units can used Salle awnings paso conets etc Out TRAK LOK-EYE KITS waite easy Potta-Ohade N/V aquvped wE teounted canopy flack canopy sflcog weterproot heat renectng naterot adrite weiner top sideladthunivvekey-boie cornet Offing no orornmetu hau no center pole Stare nrwe useabe space sbaddle oric table ot arn0d anpiane ltstandsalrncstl tall sOongt alo erinurn potes can stand nook ar play onder conriori Itisunod rearstanttefited todO MPH MECHANICS TOTE-TARP eqoipped heodes rivited tout comets naudy pronide adean dry suttace tot field tepeirs weanrer covet tot equipment against sun rain Free literabare available dM prodocts Please note new address 5 phone number 4M Company Dept BSportsman Modal PFP d-eO$3095 UPS 209 SW Bucy AvenueEconomy Modal EPFR d-eO$3295 $3 SOUPS Add-A-Shade Model APP dES$2995 n $3 SOUPS Barticevilie OK 74003RNTrack-Lok-EyeKit$lSSSvStSOUPS Phone 9181336-9445Mealtanics Tote-Tarp 4oe$ 99551 SOUPS MaetarCardVIsaCOD-MeOeY Ordera~CheebeDatar Inqables InvIted PRACTICAL SIZED GIANT Fiberolass Cowlings Canopies Available Plans sent Post-Paid within USA Send 5O Full Catalog Balsa Nick Ziroli 29 Edgar Dr Smithtown NY 11787 USA MODELS byNICKZIROI-I Jets too 516-234-5038 Aileron range 34 up % down whet appetite seasons fun-fly competition stats Scorpion nine recent fun-fly contests 18 first-place awards 16 second-place awards 12 third-place awards isnt impressive enough Scor pion flown exclusively 1985 high point winner High Plains Radio Control Association Kansas Oklahoma Texas New Mexico Colorado As name implies fun-fly intended just flown fun same time participants didnt care about winning no would keep score some practice little self-confidence vm *M MO AU HEN EMOlb SCALE 03 PLANS a-ID NANNNEVIATID NA34E 24 SVaaght Cans P40 20SLt2tO525 65935 NS569 15Can J845 Jasay 211332146528 86 4EAF NE2Nt C 19929105824 29Wace TepeeWIsE 15112212452 36Weatled Lysandee 25143716752 25Dane 0460 Sheer 231434166832 29See 100 SurE 15152212 33SCm TI laretee 302545289056 12 35__ inPashasd Lunas 11 21113112 39Cal P36A Fights 18122814211233 25Vet Case 0201/4 58132714 38Can Calico PSYSs 5239784 19Castlas t4C4 946 17Pahhes 87 PEe 1492110 31Naples GeOne 1171785516 57~7052 13Saperurasins S6s 1572284416 6024803 36Gene OnlNhOwk 1472180316 NS 35Lash Electra #11 271841208240 Lank lies039 43SIns Avenges TOP 301440165032 Psed tt4AT48 42ens 8170 P1 Past 51327735 8170555 38NA Mitchell N25 36265529 2549 34ttseslCaeEaIMC72 157230 N82649 37Car Navy 503C1 19920155720 StIsATel42 25Censar E3C1&2 1101193318NadlyPSee49 34Sane Teassy SC3 47327135 DC 355 33Cult Nash P61 1512231 2Doallttlsa GeOll 121218143224 49367448 31Baa P45344 P128 151422164526 60399059 32Spefid NailDog 134920154020 5 38043 32Nauned Iks&N1he 10715831166245 34Tassels 557 Nasal 13719483916 375835 t5Nnw Na MullIgan 16923104720623545 33800 P26A Law wsg 14112112422463368448 35Stlsana 7ti SNi 20730 4258 Meaqaite Nash 371941228142 108% 37Stesesas P717 16924104928 43N NIh Widow PNi 333249359969 50TANS Nuha 75513 14721843191 12C5N2C4 RelIdiwa 253037357455 56PaId ThenCe hAT 3o 32 57 36 11465 31Sellansa Nsa 322048249640 33Glans 123 Snsh* 19182920Sf3 27C Sanhauk F7Cl 151223144728 63" 28Ilk Anyklh S38 3625542804 168PEe 5450 Sash 50327535 31Llodya LSlelse 2111311253 ia 10 Plasta 10514 3180w Nasal P510151503166032 31C Opaehwk P9C212121914 3828755507656 31Beelne PIe P45315142254452660399059 30Tannra PlaInIp12918103720493574 5 28Laasle12Asp42321352470529369 ROAD NEPONE OSIENING*318 SCALE 37/32 NIZE PLANS AVAILASLE AT ONE MININlIN 001101SOlDOLLAR UNDERtION SIZE SE SINE TO ASS TOE DID- PRICES FOR ALL DESIGNS AL 10% P55 PACKAGING POSTAGE AND INSINANCE ANGST TOOlS ND ADDITS SAL PLANS 5 MAST SIZES SSs-S7S CATALOG 5200 03/ PSICI LIST ALONE 51 55 415 FOREIGN 53 eve anode anuppy hourS PockedOIClrOflSNll FseodSiC 19/9"s"50' 703073 SIreN/I 001801CIENELANS ON/S 44102 138 Model Aviation can find yourself right up among leaders next fun-flyand Scor pion can help get Radio Technique/Myers Continued page 34 RCt2 through RC34 2 under circumstances crystalswap old AM set new low-band chan nel Dont fly anyone has done insists knows right ess person can show spectrum alyzer knows what talking about 3 If suffer interference spread out Make use Owen Blacks Pacific plan see column May 1987 issueor something equivalentto set up flight lines minimize possible interference combinations ITS ALL UP TO YOU George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Premiered/Berman Continued page 44 well plane climbs straight up until engine cuts out after 10 seconds Now plane levels out becomes glider air borne full time two minutes being opti mal plane gives fuse its chance rubberband zapped stabilator pops up cruiser DTs dethermal izes ideal course things ship now descends gently sometimes por poising motion lands too far away Nebraska winds behave didnt mostly Retrieval came matter strenuous cross-country trek resourceful Free Flight ers eased saddling up motorbikes ATVs Few midair worries contest Cunningham family anyway Gas challenging enough have bridged generation gap Vic Sr AMA No 984 won Nats 1957 Vic Jr re peated feat 1968 Olathe KS plane own design Now grandson Jeff showing sign being primed same distinction Guess some us have shown planes can fly radio stuffing Another stellar Nats event Wed nesday night banquet held huge hall Lincoln fairgrounds Guest speaker Burt Rutan uncon ventional canards designs Per haps 400 modelers wives listened spellbinding account perils Voyager Burt left no doubt anyones mind despite its successful conclusion brother Dick copilot Jeana Yeager definitely risk during historic flight thing Voyager never flown full takeoff weight prior record attempt Second some fuel leakage resulted wing tips scraping during takeoff roll Equally serious crew discomfort result tossing motion 4 DC-a15 1140 Span$4200 F4U CORSAIR251 Span$3000 A6M5 ZERO251 Span$3000 CURTIS P40251 Span$3000 AT-6 TEXAN24 Span$3000 F8F BEARCAT25 Spans3000 FOKKERDR-1 27 Trips82700 Order Plans RK-20 RK-740 Ducted Fans Phantom35 span$1000 Viggan32 span$1000 F-iS38 span$1000 Plan canopy$1500 Carry tile Largest anl Only Stock Kratt Parts World raf alive working KRAFT MIDWEST Authonzed Warranty Service FREQUENCY CONVERSION $1000 Discount Regular Repair Most Makes Models Converted Tuning Donewith Spectrum Analyzer KRiiK-LINE Also Service AU E/ Futabasaacs Only Full Time Servicenter Ihe Midwest 117 East Main St Northvil le Michigan -iC 48167 E Upper Level Phone 1 -313-348-0085
Edition: Model Aviation - 1988/01
Page Numbers: 32, 33, 34, 138
George M Myers Radio Thchnque THE QUESTION What low-priced radio should buy 1988 toured some major RC systems sup pliers asking question Before give answers lets review what already know I Use frequencies 7208 7216 7224 7232 7240 7296 7564 MHz control model aircraft became illegal fed eral regulation effective December 20 1987 frequencies shared other high-powered services interfered model aviation much make useless some parts country FCC gave us five years get existing equipment converted RC38 through RC56 exclusively model aviation Converted sets suffer less interference canceled channels can still get old sets converted want 2 Effective January 1 1988 AMA decrees use narrow-band transmitters RC12 through RC34 replace above-listed can celed channels new channels also exclusively model aviation spaced 40 kHz RC38 through RC56 new requirement has imposed Ie narrowband transmitters ll permitted oper ate term narrow-band transmitter has defined AMA Guidelines have discussed length previous issues Model Aviation will find discus sions AMA News section Model Avia tion September through November 1987 3 PCM recent FM transmitters meet AMA Guidelines bandwidth narrow ness few AM transmitters also meet Guide lines Everyone talked RC industry equated AM lowest-priced system want talk about 1988 AM transmit ters have Airtronics Vanguard line modified Ace R/C Inc Silver Seven has shipped since April 1987 modified Pro-Line transmitters 1983 Tower Gold 500 transmitter measured 50 dB down 20 kHz its interchangeable crystals RC12 RC40 RC5O RC56 expect new Tower transmitter will qualify about Futaba Steve Helms told Futaba has technology make narrowband AM system sure new Airtronics Vanguard AM transmitter L shows its narrow-band performance Airtronics IFR spectrum analyzer new Airtronics low-priced line replaces earlier well-received SR line Larry Lloyd R aligns Airtronics RC systems using fixtures equip ment identical used Sanwa factory can keep equipment operating up factory specifications 32 Model Aviation Myers land cruiser fully loaded Airtronics plant Irvine CA just prove IRS author Myers really Mighty tank has over 100000 miles still quieter smoother Rolls-Royce ads used proclaim sevu Helms prepares test new proto type Futaba FM receiver Diablo Plane powered new YKS 120 four-stroke engine giving model unlimited vertical per formance radio subjected Myers/Aberle performance tests found superior anything else George has seen lowest price Im sure thats correct statement because 1976 Futaba Contest 7 AM transmitter met AMA Guidelines tested carefully phrased answer largest supplier RC systems asks rest story Paul Harvey saysthe receiver 1976 Futaba Contest 7 AM receiver narrow-banded AM receivers Ive seen does meet AMA Guidelines receivers Neither does other AM receiver have tested though some like Acoms receiver quite good may have noticed narrow-band receiv ers arent specified AMA 1988-1991 suspect Futaba doesnt intend sell narrow-band AM transmitters use RC 12 through RC34 being able offer match ing receivers hence qualified answer doesnt prevent selling existing lines RC38 through RC56 re quired transmit narrow-band per fectly acceptable AMA go little above lowest price can get excellent narrow-band performance Futaba Conquest PCM systems same can said FM sets have seen some prototype FM receivers very narrowband show amazing resistance interfer ence cheap Therein lies tale started column asking What low-priced RC system should buy 1988 vendors look AM systems fill low-priced end cat alog Except maybe Polks Aristo Craft/Hi-Tec 720 receiver part low-priced FM system considerable improvement over old 620 1988 flying field Lets get off onto another subjectone going very important practically RC flier Fred Marks discovered publicized fact order live together peaceably 50-channel 20-kHz raster ie 1991 AM transmitters must have sidehands suppressed better -55 dB 20 kHz signed frequency Myers/Aberle Aber le/Myers depending magazine read test results agree Freds findings tests wideband AM transmitters -30 -40 dB say using AM transmitters built before 1982 receivers show poorer performance against AM interference against FM tested against pair narrow-band Tower Gold 500 transmitters using various interchangeable crys tals receiver performance looks better What does mean Real World important meaning wideband AM interferes types receivers AM FM FM/PCM narrowhand FM does guy shifts old White/ Red AM transmitter new narrow-bandrequired channel RC22 instance will inter fere nice new 1988 set RC2O Whos fault Should new 1988 set able reject interference regardless what does new receiver could would have ideal situation spread-spectrum RC system does exist might give kind performance AM FM FM/PCM narrow-hand RC thought pa tently ridiculous Given enough transmitter power anything practical standpoint Im talking about signal 30 dBor about 1000 times stronger will interfere radio re Continued page 34 completely satisfied LOCTITE Spray Adhesive simply return unused portion us along sales receipt well refund money LOCTITE offers guarantee Available quality hobby craft shops everywhere LOCTITL 4450 Craeeood coart Cleveland 050 44128 216475 3600 20134 State CerAtos Cahtonia 90701 213 880-1278 iobavt 310 North 5th Street St Charles IIIjrojs 60174 312 584-7010 FRANK TIANO ENTERPRISES 2480 Socthaest 86th Terrace Davie Florida 33324 305 4732211 Loctite isa registered trademark Loctite corporation January 1988 33 ment its L local Hobby LOCTITE Spray will work guar antee Corporation Auto olive Consumer Group Cleveland Ohio 44128 WILLIAMS ACCESSORIES BROTHERS 4 PILOTS STANDARD TSMAN 0 RACING TARY WHEELS AGE TH CONTOUR BALLOON E 4 ENGINES PRATT & WHITNEY HT HONE PARABELLUM ILLJs AT ITS BEST t Weight l P-30 Size Models k Oh MOTORSFLIGHT BATTERIE 8-62 2x50 mAlir 9 gins Snap place moto No wiring resuired B-522o80 mAtlr13 gins$ S Same B-62 butwith autoso u 1 minutes 9-633x50 inAHr13 gins$13 5 "l shorte moto t,k hi PROPULSION SYSTEMS VI-iliB- $2495 Includes HY-70B Motor B-62 Battery 2 Props Charge Plug Connector Accessory Pkg screws spacers etc VL-l11BR$2795 Same VI-iliBhut HY-7OBR Motor Remote Flight Battery Holder R-t2 HY-lOB$1495 An improved HY-70 Features reinforced prop shaft neoprene sleeve engage disengage Free-wheeling 14Y-JOBR$1795 Same HY-7tB hut equipped Remote Flight Bottery Hulder er has 7 awls nionk disconnects Slide hattery ceiver except using spread-spectrum technique Since received power falls off fourth power distance between RC transmitter its receiver B advantage inter ferer just matter distance plane flies transmitter closer model stays transmitter less opportu niuy interference get Helicopters have advantage because sel dom fly very far control transmitter other hand Sailplanes probably susceptible interference because fly long distance transmitters also points way alleviating inter ference problem may have Move away talk suppressing sidebands say narrow-banding transmitter really talking about suppressing power interfere whole point AMA argument got us new exclusive channels no way low-power system can share radio frequency channel highpower interferer see above argument systems radiate essentially same power power sidebands properly suppressed sharing pos sible RC transmitters models limited FCC half-dipole antenna taken AMA Guidelines makes RC systems essentially equal So going make sure old chan nels abandoned nobody shifts old wideband AM set onto new narrow-band RC channel YOU friend dont no will FCC might make exam ple guy just make point about enforcement well get AMA cant much educate people what am trying right now user RC channels expected police use channels makes situation similar Hams among us Hams have police use Ham bands convincing other Hams use properly Ham Amateur Radio operatorEd someone shows up AMA Nato AMA-hosted World Championships person will met processing table AMA spectrum analyzer use will clearly sep arate narrow-banders widebanders owners said wideband transmitters operat ing channels RC12 through RC34 will permitted use AMA-sponsored competitions about club competitions CC AA sanctions approximately AMA really cant require local Contest Director equip him self spectrum analyzer cost bun dle best could done would provide him list equipment known satisfactory compilation such list could involve legal problems Also such list probably never will catch up latest offering fav orite vendor end comes down YOU right thing teach non-AMA people right thing should can enjoy new low band RC12 through RC34 will significantly freer interference concerns situa tion have far Whats right thing 1 Only use narrow-band AM FM FM/PCM transmitters new channels Continued page 138 34 Model Aviation SEND $3 FOR FULLY ILLUSTRATED CATALOG DEPT MA iAWNEE ST SAN MARCOS CALIFORNIA 92069 Lots enjoy outdoorSin Comfort Little World Comfort Hot Burning Summer Days Convenient Six Portable Shade Thate Quick Set Up Change Instantly Give Protection Weather Size 72x120 60 sq ft Asbg make rt itcac large want becausa add-nfl units douffle filyM etc thence 01 Potta-Shades ate acailaffle Add-nfl units can used Salle awnings paso conets etc Out TRAK LOK-EYE KITS waite easy Potta-Ohade N/V aquvped wE teounted canopy flack canopy sflcog weterproot heat renectng naterot adrite weiner top sideladthunivvekey-boie cornet Offing no orornmetu hau no center pole Stare nrwe useabe space sbaddle oric table ot arn0d anpiane ltstandsalrncstl tall sOongt alo erinurn potes can stand nook ar play onder conriori Itisunod rearstanttefited todO MPH MECHANICS TOTE-TARP eqoipped heodes rivited tout comets naudy pronide adean dry suttace tot field tepeirs weanrer covet tot equipment against sun rain Free literabare available dM prodocts Please note new address 5 phone number 4M Company Dept BSportsman Modal PFP d-eO$3095 UPS 209 SW Bucy AvenueEconomy Modal EPFR d-eO$3295 $3 SOUPS Add-A-Shade Model APP dES$2995 n $3 SOUPS Barticevilie OK 74003RNTrack-Lok-EyeKit$lSSSvStSOUPS Phone 9181336-9445Mealtanics Tote-Tarp 4oe$ 99551 SOUPS MaetarCardVIsaCOD-MeOeY Ordera~CheebeDatar Inqables InvIted PRACTICAL SIZED GIANT Fiberolass Cowlings Canopies Available Plans sent Post-Paid within USA Send 5O Full Catalog Balsa Nick Ziroli 29 Edgar Dr Smithtown NY 11787 USA MODELS byNICKZIROI-I Jets too 516-234-5038 Aileron range 34 up % down whet appetite seasons fun-fly competition stats Scorpion nine recent fun-fly contests 18 first-place awards 16 second-place awards 12 third-place awards isnt impressive enough Scor pion flown exclusively 1985 high point winner High Plains Radio Control Association Kansas Oklahoma Texas New Mexico Colorado As name implies fun-fly intended just flown fun same time participants didnt care about winning no would keep score some practice little self-confidence vm *M MO AU HEN EMOlb SCALE 03 PLANS a-ID NANNNEVIATID NA34E 24 SVaaght Cans P40 20SLt2tO525 65935 NS569 15Can J845 Jasay 211332146528 86 4EAF NE2Nt C 19929105824 29Wace TepeeWIsE 15112212452 36Weatled Lysandee 25143716752 25Dane 0460 Sheer 231434166832 29See 100 SurE 15152212 33SCm TI laretee 302545289056 12 35__ inPashasd Lunas 11 21113112 39Cal P36A Fights 18122814211233 25Vet Case 0201/4 58132714 38Can Calico PSYSs 5239784 19Castlas t4C4 946 17Pahhes 87 PEe 1492110 31Naples GeOne 1171785516 57~7052 13Saperurasins S6s 1572284416 6024803 36Gene OnlNhOwk 1472180316 NS 35Lash Electra #11 271841208240 Lank lies039 43SIns Avenges TOP 301440165032 Psed tt4AT48 42ens 8170 P1 Past 51327735 8170555 38NA Mitchell N25 36265529 2549 34ttseslCaeEaIMC72 157230 N82649 37Car Navy 503C1 19920155720 StIsATel42 25Censar E3C1&2 1101193318NadlyPSee49 34Sane Teassy SC3 47327135 DC 355 33Cult Nash P61 1512231 2Doallttlsa GeOll 121218143224 49367448 31Baa P45344 P128 151422164526 60399059 32Spefid NailDog 134920154020 5 38043 32Nauned Iks&N1he 10715831166245 34Tassels 557 Nasal 13719483916 375835 t5Nnw Na MullIgan 16923104720623545 33800 P26A Law wsg 14112112422463368448 35Stlsana 7ti SNi 20730 4258 Meaqaite Nash 371941228142 108% 37Stesesas P717 16924104928 43N NIh Widow PNi 333249359969 50TANS Nuha 75513 14721843191 12C5N2C4 RelIdiwa 253037357455 56PaId ThenCe hAT 3o 32 57 36 11465 31Sellansa Nsa 322048249640 33Glans 123 Snsh* 19182920Sf3 27C Sanhauk F7Cl 151223144728 63" 28Ilk Anyklh S38 3625542804 168PEe 5450 Sash 50327535 31Llodya LSlelse 2111311253 ia 10 Plasta 10514 3180w Nasal P510151503166032 31C Opaehwk P9C212121914 3828755507656 31Beelne PIe P45315142254452660399059 30Tannra PlaInIp12918103720493574 5 28Laasle12Asp42321352470529369 ROAD NEPONE OSIENING*318 SCALE 37/32 NIZE PLANS AVAILASLE AT ONE MININlIN 001101SOlDOLLAR UNDERtION SIZE SE SINE TO ASS TOE DID- PRICES FOR ALL DESIGNS AL 10% P55 PACKAGING POSTAGE AND INSINANCE ANGST TOOlS ND ADDITS SAL PLANS 5 MAST SIZES SSs-S7S CATALOG 5200 03/ PSICI LIST ALONE 51 55 415 FOREIGN 53 eve anode anuppy hourS PockedOIClrOflSNll FseodSiC 19/9"s"50' 703073 SIreN/I 001801CIENELANS ON/S 44102 138 Model Aviation can find yourself right up among leaders next fun-flyand Scor pion can help get Radio Technique/Myers Continued page 34 RCt2 through RC34 2 under circumstances crystalswap old AM set new low-band chan nel Dont fly anyone has done insists knows right ess person can show spectrum alyzer knows what talking about 3 If suffer interference spread out Make use Owen Blacks Pacific plan see column May 1987 issueor something equivalentto set up flight lines minimize possible interference combinations ITS ALL UP TO YOU George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Premiered/Berman Continued page 44 well plane climbs straight up until engine cuts out after 10 seconds Now plane levels out becomes glider air borne full time two minutes being opti mal plane gives fuse its chance rubberband zapped stabilator pops up cruiser DTs dethermal izes ideal course things ship now descends gently sometimes por poising motion lands too far away Nebraska winds behave didnt mostly Retrieval came matter strenuous cross-country trek resourceful Free Flight ers eased saddling up motorbikes ATVs Few midair worries contest Cunningham family anyway Gas challenging enough have bridged generation gap Vic Sr AMA No 984 won Nats 1957 Vic Jr re peated feat 1968 Olathe KS plane own design Now grandson Jeff showing sign being primed same distinction Guess some us have shown planes can fly radio stuffing Another stellar Nats event Wed nesday night banquet held huge hall Lincoln fairgrounds Guest speaker Burt Rutan uncon ventional canards designs Per haps 400 modelers wives listened spellbinding account perils Voyager Burt left no doubt anyones mind despite its successful conclusion brother Dick copilot Jeana Yeager definitely risk during historic flight thing Voyager never flown full takeoff weight prior record attempt Second some fuel leakage resulted wing tips scraping during takeoff roll Equally serious crew discomfort result tossing motion 4 DC-a15 1140 Span$4200 F4U CORSAIR251 Span$3000 A6M5 ZERO251 Span$3000 CURTIS P40251 Span$3000 AT-6 TEXAN24 Span$3000 F8F BEARCAT25 Spans3000 FOKKERDR-1 27 Trips82700 Order Plans RK-20 RK-740 Ducted Fans Phantom35 span$1000 Viggan32 span$1000 F-iS38 span$1000 Plan canopy$1500 Carry tile Largest anl Only Stock Kratt Parts World raf alive working KRAFT MIDWEST Authonzed Warranty Service FREQUENCY CONVERSION $1000 Discount Regular Repair Most Makes Models Converted Tuning Donewith Spectrum Analyzer KRiiK-LINE Also Service AU E/ Futabasaacs Only Full Time Servicenter Ihe Midwest 117 East Main St Northvil le Michigan -iC 48167 E Upper Level Phone 1 -313-348-0085
