Whats Bulletproof MY TELEPHONE RINGS voice other end says Goorge Whats wrong channel 44 area answer Nothing know Whats problem voice goes Well flying Cedar Creek about 75 people present airplane got hit saw interferenceGMM transmitter has upgraded Gold Sticker performance use RCD narrow-band receiver thought supposed bulletproof Whats going have scanner can check things out voice belonged Vinrie Pollizzotto friend lives old hometown Oceanside New York explained least four explanations problems decreasing order probability 1 Most likely Someone switched transmitter same manufacture type AM FM PCM channel No receiver bulletproof PCM usually improves resistance such interference also get some help fact manufacturers things differently Airtronics Futaba narrowband FM sets rarely interfere another 2 The interference might airplane such broken antenna wire dirty contacts servo plugs bad switch harness broken separated wires worn-out servos bad battery pack some metal-to-metal clattering On/Off switch same side airplane engines exhaust fuel frequently gets switch causes kinds problems 3 The antenna transmitter might loose might bad contacts broken wires inside transmitter 4 There might actually some Radio Frequency Interference RFI area Next Scanning Interference Radio frequency interference RFI what look scanner after have eliminated other simpler possibilities RFI includes usual stuff such Image 21M 31M H I1Z473Q /lo Cut Off Wire Protective Sleeve ADAPTER No 1 PIGTAIL 12 Wire 1 N9 14 Note Band Positions 1 pf Disk Capacitor ADAPTER No 2 ANTENNA Manufacturer Wire Color Function Connection JR Orange Signal Red ected Brown taba White Signal Red ected Black rtronics Black 1 Signal Black 2 /Red Bk/Wh ected ACE RIO Blue Signal Red ected Black tec Yellow Signal Red ected Black her manufacturers will use similar codes details make two adapters use Bird Dog ii RC channel monitor splattering transmitter adjacent channel powerful wideband transmitter some other service etc Since Vinnie has dual-conversion narrow-band receiver RCD can discount 21M Image problems newcomers 21M second-order intermodulation interference 31M thirdSeptember 1991 11 George M Myers AC Flying Today 7OFroehIIchFaamRd HIcbvWeNY 11801 Abstract Bulletproof receivers scanfling models RC channel interfer ence Bird Dog II narrow-band sin gle conversion receivers Late news new FCC rules update Robertson En gineering case Myers ira uog ii monijor connecica piane s receiver will desuct radio interference FAIRCHILD 24 GIANT SCALE 90 STINSON SR-8 115 SCALE 100 DeHAVILLANO BEAVER GIANT SCALE 96 K t order intermodulation interference splattering transmitter radiates energy over wider portion spectrum supposed radiates spikes other frequencies Now say So find out whats causing problem answer some tests radio system pretty sophisticated test set Just observing what servos can detect following A Someone else channel Turn receiver before transmitter B RFI Use same procedure C You have trouble transmitter Shake system D You have trouble airplane Shake system Have two friends hold plane its wings engine running can move sticks watch what servos Bird Dog II previous five steps good enough have cheap scanner No crystals needed scans channel receiver need scan works AM FM PCM channel 27 MHz Ham Band 72 MHz some European frequency Sound interesting Begin purchasing palm-sized Audio Amplifier-Speaker local Radio Shack Cat No 277-1008C about $12 store comes card gets free battery per month Remember ask free 9V transistor battery because youll need Also buy two %-in miniature phone plugs Cat No 274286A high frequency diodes 276-1122 5pf capacitors 272-120 some wire Next cut pigtail off dead servo servo-plug end off aileron extender cable make connection receiver available Useful hint friend Norm Rosenstock JR Radio plug almost universal tool will fit sockets such Futaba J socket in-line plug right-angle-plug type well late model Aristocraft HiContinued page 122 12 Model Aviation fine kits include Preformed landing gear cut parts aces Drawn Control horns lete plans rglass cowls pants Bellcranks ity hand selected balsa ow acetate Screws ct spruce ruction manual photo page order Call 208 773-9001 log fine kits $400 MAULE M51M6 ROCKET 114 SCALE gg STITS PLAYBOY 113 SCALE 88 SPERRY MEENGER IA WACO 10 115 SCALE 73 yourself favor IKON NWST Kit n world wide finest scale kits Adapter No 2 has plugged Bird Dog II show find transmitter WhICfl has left setup can very useful someone running transmitter impound - w m 0 U End frustration embarrassment hard-to-start 2- 4-cycle glow-model engines FAST START helps prevent drowning glow plug providing high percentage ignitable fuel oxy gen engines combustion chamber Work wonders hot days hot flooded engines Quickly starts engines cold days everyone else having problem Just add few drops carburetor prior propping Complete instruc tions included Call Toll Free 1 800 5338543 ag Gold Formula FAST START cold weather starting Order No 7621 . 4 fi oz unit dropper top Sug List $495Now Just $400 Green Formula FAST START hot weather hot engine starting Order No 7624 . 4 ft oz unit dropper top Sug List $495Now Just $400 See yourdealerororderdirect ad OrderUnit p~IptIoflioeTotal Cod Weocho 7621 G dF oooFAST $400$ 7624 C F neolo FAST $400 $ START Ho Woother Sub Total $ MN Res Add 0% Sales Tax$ Postage & Handling 5550 poe Item 5450/mao$ TOTAL$ C Check money order enclosed Charge C VIsa E Mastercard Card No_______ _______ -_______ Exp Dale. SIgnature Send Sween Jd Poducls Inc PO Box 8300 nkato MN 56001 RC Flying Today George M Myers Continued page 12 Tec sockets color code sequences same black red something also fits Airtronics socketbut pin assignments different careful Bird Dog TI wont work Airtronics system unless use Airtromcs plug Carefully observe side socket gets black wire paint white line receivers signal-pin side socket assist lining up plugs properly Make up two input adapters according sketches Use adapter time Plug adapter No 1 Bird Dog TI receiver listen several ways can 1 Before mount wing plug Bird Dog II aileron extender cable 2 Plug unused servo socket receiver 3 Use Y adapter share socket servo inside plane 4 Use aileron extender cable Y adapter bring test socket outside airplane 5 Plug Bird Dog II old wideband receiver channel Use monitor activity channel whether have plane fly Plug battery also make work good way get additional service old junk receivers ever once Bird Dog II installed properly turned will hear signal controls servo After perform few tests will learn difference between sound good signal interference Listen Bird Dog II everything operating normally Listen Bird Dog II have two transmitters operating channel difference sound interference don t hear difference don t have interference sound interference PCM systems subtle Most PCM systems will go fail-safe mode interference present Therefore sound hear will sound normalEXCEPT THAT YOE WONT BE ABLE TO MAKE ANY CHANGE IN THE SOUND BY MOVINC THE APPROPRIATE CONTROL ON THE TRANSMITTER Thats whats subtle about Test first switching whole system switching transmitter off Take look sketches Bird Dog II adapters Adapter No 2 antenna detector circuit built handy thing have youre running transmitter impound plug input Bird Dog II touch search coil antenna eaci transmitter impound discover left switched can also use find noise sources around home such damaged 110VAC line cords loose connections wall boxes light bulbs loose theii sockets etc noises finds around battery chargers computers might interest Im sure-that will find-it useful Continued page 125 122 Model Aviation %\tKYWAY W THE JOURNAL OF THE AIRPLANE 1920 1940TIlE EARLY AEROPLAnE Leo Opdycke EditorKenn Rust Editor WW1 AERO 19001919 SKYWAYS 19201940 two Journals contain information current prolects orical research news museums airshows shop notes technical drawings data information paint color photographs aeroplanes engines parts sale scale modelling material PLUS wants disposals news current publications kinds PLUS more. Sample copies $4 Published WORLD WAR 1 2Mtp/anes INC 15 Crescent Road Poughkecpste NY 12601 USA 914 473-3679 Original Home Machine Shop De8lpned USA Shopteak INNOVATIVE MODEL PRODUCTS HAS THE RIGHT STUFF HAWKER HURRICANE 0140 TO HAVE ThIESPITFIRE BUT IT 1060 TO HOVE THE HURRICANE 0001 0001 0005 eons USOVOA OhOOL nnnoy 0010 n Po yasto Hand Lod F berg ago 1/Olin SagS Fine aoeWingnpeo.8O looSen Coniplein Soles HardwareFace Length. 0333 noSes Packages IndadedWeght.r2 15 Lbs Machine Ccl Foan Wing CoresPowen.Ocy90 TorSO 4cy 120 Heasy Ocly Slyrene Clean CanopyInnrna Loal / Fibargiaso CowlEase Han Molded Slongoos / Ea oR d Ea p o FlyFonellent Soginners Warbird AOesuaOla AoMSl 550540 Pops Static Fining Op ua $04 faa oa 155a Ule tigOn P110w Ratlado SAndal9 Lag Other nilE Kin ab.FoehwIflag-dFooawaifngoannoio P0000 20060 Ta 106 400 100 44 Fee SOi 006 Pe30x43e8owarsegaeaaoaPHONEORDERS NSNGATI IT 33 500 Ol0e 0000105 1-800-780-3190 2118 811141122 ~5gJ 1-800-388-3190 MODEL PRODUCTS INC BRINGS YOU. nnnsownappM/ SUPER STRONG j hnooflawableand/ SUPER FLEXDJLE wyslesen/ SUPER FASTU GRIPS TiGHT WHERE OThERS DONTTM REND VASLE WIThOUT TRACESUPER ADHESIVE BIG 37oz TUBE P0 8ox4368AIoogohlebo,$995 Mergate FL 33063Hobby Lobby Totally Clear Simple Uou Gop Part tOo MIxing Holds Caroyles ANY Mateygl Including PigoSt Conedogo 80 Fogging Os Clear Parts Holds FlrsaleO Fibergigos Alloas Salvos Mocoted Aoryeltere 851001 Foar Totally Remooletle Wtsioat Caasing Oaorage PPM. available hobby retailer call Innovative Model Products Toll Free 8001780-3190 18001308-3190 Dowler Inquiries Wanted Add $250 SOt-Il PPM USED BY hf PUOS Cal Ad Johoson 15 NC Modeler Aera aS 1018111 * Ilanros Tames Ikeastem WlntarAod US Scale Team Norm Goper lEdItot Scale R ModelerI Flunk CooteSo ICleocHiot Flying ModelsI Greg Nanney ISoeSreastem CeobSeitor Scale R Modeler Masters CompeitorI Mike MOt ISaper Star HelIcopter P11011 PPM DOES ThE Walk OP MANY ADIIESIWS See As Thread Lodn BeINr Stonore Sites 1/4 Ttre time BettarTlran C/AS Attunlriog Clogeles Aed PlasOc Flberglus Parts Tie both adapters Bird Dog H bit string thread Otherwise guarantee wont able find want newcomers others us memories may perfect presentation combines features presented Radio Technique columns January 82 May 84 new Bird Dog II doesnt work check turned battery good volume turned up check have plugged adapter Input Ext Spkr socket Onward Single-Conversion Receivers Next comes letter Glen Roberts Rocket City RC Huntsville Alabama Dear George say narrow-band receiver single-conversion type like JR ABC&W receiver will see 21M interference Ron Van Putte quotes Warren Plohr saying Receivers singleconversion superheterodyne type using 455-kHz intermediate frequency cause concern reference 21M 23-channels-apart interference have Futaba Rll4H Rl17H single conversion receivers listed certified AMA News section Model Aviation s answer Dear Glen Old single-conversion 455-kHz receivers suspect because virtually wideband AM designs call OWBAMS can affected kinds interference new 50-channel environment OWBAMS can see interference transmitters 23 channel numbers away called second-order intermodulation interference call 21M Dual-conversion receivers naturally immune in-band Image secondorder interference Mostbut allof receivers have certified AMA dual-conversion designs few new redesigned singleconversion 455-kHz receivers such JR ABC&W FM receivers will minimize Image 45- 46-channel separation second-order intermodulation 23-channel separation 20-kHz adjacent-channel odd/even RC channels interference receivers have reported AMA being capable meeting AMA Guidelines 1991 narrow-band performance listed AMA News section magazine Futaba has submitted reports show new models 114 117 receivers deliver narrow-band performance As data point racing electric hydroplanes friend last Sunday 75 MHz boat channels RC88 RC89 has Attack system Gold Sticker Ri 14H receiver no interference earlier statement attributed Warren Plohr expressed concern people continue use OWBAM receivers Thanks writing Continued page 126 Flown TOC Solid Liglstwelght Touenenlfteo PlatOons DesIgned Predoton Flyer STADILIZOR Allows Acceas 111gb Teds Treesseottleo Posocliens PIta Propular RadIos Attgdtmeot Now slip Steep ft Quality Alsmimoo Solid Walnut Pads fs / PoslogeA // Hon /anoot Money Onden KDI a0426 SE 206111 P1 Keos WA 88031 [Men 4OO pm] 12061 854-8053 B&P Associates Gives Total Flight Line FREEDOM new electnC starter battery pack cuts cord has always tied Starter power panel Discover freedom being able Start plane wherever added safety less wire get caught prop charge hefty 4 Amp/hour pack will take through weekend flying power enough spare dont stop have Ni-Cads virtually size imaginable cut experimenter free design whatever takes make yours best setup field battery needs call write B&P Associates PO Box 22054 Waco TX 76702-2054 817662-5587 September 1991 125 FCC has released Report & Order responding AMAs request refinement FCC Type Acceptance Criteria summary new law 1 Effective March 1 1992 RC transmitters submitted FCC Type Acceptance must conform narrow-band criteria 2 Effective March 1 1993 marketing wideband RC transmitters must cease 3 Wideband RC transmitters put service prior March 1 1993 may used until March 1 1998 AMA requirement Gold Stickers 72-MHz RC transmitters used sanctioned competition took effect January 1 1991 continues effect Nobody has yet mandated narrow-band receivers need survive 1991 environmentespecially fly vicinity large urban areas related matter FCC has granted Robertson Engineering waiver continue its previously illegal use 75 MHz Non-Aircraft frequencies control commercial cranes Take evidence people out covet RC frequencies will seek use means patently illegal infringement frequencies commercial users has tolerated FCC situation establishes precedent next attack must remain vigilant report such operations AMA Headquarters AMA will fight such encroachments knows about II RC Giant/de Vries Continued page 16 indicate 220 230 clock Stearman PT-17 did everything except loops Immelmanns 95 mph Consolidated PBY went everywhere sizzling 105 references show Flying Fortress capable over 250 mph sitting copilots seat read lumbering 150 mph cruised Ohio skies T-6 Texan Beech C-45 would flown cross-country between 140 150 mph P-40N Warhawk might indicate 190 Thats considerably slower 250-mph red line T-6 300 max speed Hawk too will easier miniature pilot model Curtiss slow up tad Pointing nose P-40 earthward would increase its speed expense airplane driver stomp right rudder might main keep Warhawk going straightthe offset fin designed minimize torque low airspeeds pulled bird strongly left airspeeds increased Its true supercharger-equipped warbirds could maintain indicated airspeeds altitude increased Considering effect increased altitude true airspeeds would increase substantially However cruising power settings max airspeeds would never attained point discussion striving realism flight Giant Scalers should consider cruising airspeeds rather maximum airspeeds prototype aircraft flight patterns Most time real planes arent flown full-bore nor should models altitudes below 10000 ft Douglas B-26 could outrun P-S lH Northrup P-61 could easily outmaneuver P-S lD So unless youre flying model P-51 Reno racer pull back smidgen go stick throttle control level off model will provide realistic flight speed youll save gas Its middle flying season Lets go club field bore some holesD RENEW 2 See Card Page 99 Custom Graphics corate model stars circles triangles club logos scale manufacturers insignia K name itl Peal stick remove masking end its K done AMP Graphics prespaced alignment assured costa littlel Try us K AMA number combination 10 letters K numbers computer cut 2 high black whitel ppd introductory price $295 K printed information send $100 p&h K dont delay inquire now have information need iti Call write todayK KAMP Inc Graphics Dept MA PO Box 793K DeerParkNY11729 516 363-5206 NyS Itesidents add miss tasK 126 Model Aviation Late News MicroMarK IThe Small Tool Specialists IOVER 1000 TOOLS & ACCESSORIESFO Brand Names Unusual Items Exclusive Products savings up ~~rAll designed make project enjoyable professional TO ORDER Send $100 name addressj ADDRESS Snyder Ave L Berkeley HeightsO721595ciTY
Edition: Model Aviation - 1991/09
Page Numbers: 11, 12, 122, 125, 126
Whats Bulletproof MY TELEPHONE RINGS voice other end says Goorge Whats wrong channel 44 area answer Nothing know Whats problem voice goes Well flying Cedar Creek about 75 people present airplane got hit saw interferenceGMM transmitter has upgraded Gold Sticker performance use RCD narrow-band receiver thought supposed bulletproof Whats going have scanner can check things out voice belonged Vinrie Pollizzotto friend lives old hometown Oceanside New York explained least four explanations problems decreasing order probability 1 Most likely Someone switched transmitter same manufacture type AM FM PCM channel No receiver bulletproof PCM usually improves resistance such interference also get some help fact manufacturers things differently Airtronics Futaba narrowband FM sets rarely interfere another 2 The interference might airplane such broken antenna wire dirty contacts servo plugs bad switch harness broken separated wires worn-out servos bad battery pack some metal-to-metal clattering On/Off switch same side airplane engines exhaust fuel frequently gets switch causes kinds problems 3 The antenna transmitter might loose might bad contacts broken wires inside transmitter 4 There might actually some Radio Frequency Interference RFI area Next Scanning Interference Radio frequency interference RFI what look scanner after have eliminated other simpler possibilities RFI includes usual stuff such Image 21M 31M H I1Z473Q /lo Cut Off Wire Protective Sleeve ADAPTER No 1 PIGTAIL 12 Wire 1 N9 14 Note Band Positions 1 pf Disk Capacitor ADAPTER No 2 ANTENNA Manufacturer Wire Color Function Connection JR Orange Signal Red ected Brown taba White Signal Red ected Black rtronics Black 1 Signal Black 2 /Red Bk/Wh ected ACE RIO Blue Signal Red ected Black tec Yellow Signal Red ected Black her manufacturers will use similar codes details make two adapters use Bird Dog ii RC channel monitor splattering transmitter adjacent channel powerful wideband transmitter some other service etc Since Vinnie has dual-conversion narrow-band receiver RCD can discount 21M Image problems newcomers 21M second-order intermodulation interference 31M thirdSeptember 1991 11 George M Myers AC Flying Today 7OFroehIIchFaamRd HIcbvWeNY 11801 Abstract Bulletproof receivers scanfling models RC channel interfer ence Bird Dog II narrow-band sin gle conversion receivers Late news new FCC rules update Robertson En gineering case Myers ira uog ii monijor connecica piane s receiver will desuct radio interference FAIRCHILD 24 GIANT SCALE 90 STINSON SR-8 115 SCALE 100 DeHAVILLANO BEAVER GIANT SCALE 96 K t order intermodulation interference splattering transmitter radiates energy over wider portion spectrum supposed radiates spikes other frequencies Now say So find out whats causing problem answer some tests radio system pretty sophisticated test set Just observing what servos can detect following A Someone else channel Turn receiver before transmitter B RFI Use same procedure C You have trouble transmitter Shake system D You have trouble airplane Shake system Have two friends hold plane its wings engine running can move sticks watch what servos Bird Dog II previous five steps good enough have cheap scanner No crystals needed scans channel receiver need scan works AM FM PCM channel 27 MHz Ham Band 72 MHz some European frequency Sound interesting Begin purchasing palm-sized Audio Amplifier-Speaker local Radio Shack Cat No 277-1008C about $12 store comes card gets free battery per month Remember ask free 9V transistor battery because youll need Also buy two %-in miniature phone plugs Cat No 274286A high frequency diodes 276-1122 5pf capacitors 272-120 some wire Next cut pigtail off dead servo servo-plug end off aileron extender cable make connection receiver available Useful hint friend Norm Rosenstock JR Radio plug almost universal tool will fit sockets such Futaba J socket in-line plug right-angle-plug type well late model Aristocraft HiContinued page 122 12 Model Aviation fine kits include Preformed landing gear cut parts aces Drawn Control horns lete plans rglass cowls pants Bellcranks ity hand selected balsa ow acetate Screws ct spruce ruction manual photo page order Call 208 773-9001 log fine kits $400 MAULE M51M6 ROCKET 114 SCALE gg STITS PLAYBOY 113 SCALE 88 SPERRY MEENGER IA WACO 10 115 SCALE 73 yourself favor IKON NWST Kit n world wide finest scale kits Adapter No 2 has plugged Bird Dog II show find transmitter WhICfl has left setup can very useful someone running transmitter impound - w m 0 U End frustration embarrassment hard-to-start 2- 4-cycle glow-model engines FAST START helps prevent drowning glow plug providing high percentage ignitable fuel oxy gen engines combustion chamber Work wonders hot days hot flooded engines Quickly starts engines cold days everyone else having problem Just add few drops carburetor prior propping Complete instruc tions included Call Toll Free 1 800 5338543 ag Gold Formula FAST START cold weather starting Order No 7621 . 4 fi oz unit dropper top Sug List $495Now Just $400 Green Formula FAST START hot weather hot engine starting Order No 7624 . 4 ft oz unit dropper top Sug List $495Now Just $400 See yourdealerororderdirect ad OrderUnit p~IptIoflioeTotal Cod Weocho 7621 G dF oooFAST $400$ 7624 C F neolo FAST $400 $ START Ho Woother Sub Total $ MN Res Add 0% Sales Tax$ Postage & Handling 5550 poe Item 5450/mao$ TOTAL$ C Check money order enclosed Charge C VIsa E Mastercard Card No_______ _______ -_______ Exp Dale. SIgnature Send Sween Jd Poducls Inc PO Box 8300 nkato MN 56001 RC Flying Today George M Myers Continued page 12 Tec sockets color code sequences same black red something also fits Airtronics socketbut pin assignments different careful Bird Dog TI wont work Airtronics system unless use Airtromcs plug Carefully observe side socket gets black wire paint white line receivers signal-pin side socket assist lining up plugs properly Make up two input adapters according sketches Use adapter time Plug adapter No 1 Bird Dog TI receiver listen several ways can 1 Before mount wing plug Bird Dog II aileron extender cable 2 Plug unused servo socket receiver 3 Use Y adapter share socket servo inside plane 4 Use aileron extender cable Y adapter bring test socket outside airplane 5 Plug Bird Dog II old wideband receiver channel Use monitor activity channel whether have plane fly Plug battery also make work good way get additional service old junk receivers ever once Bird Dog II installed properly turned will hear signal controls servo After perform few tests will learn difference between sound good signal interference Listen Bird Dog II everything operating normally Listen Bird Dog II have two transmitters operating channel difference sound interference don t hear difference don t have interference sound interference PCM systems subtle Most PCM systems will go fail-safe mode interference present Therefore sound hear will sound normalEXCEPT THAT YOE WONT BE ABLE TO MAKE ANY CHANGE IN THE SOUND BY MOVINC THE APPROPRIATE CONTROL ON THE TRANSMITTER Thats whats subtle about Test first switching whole system switching transmitter off Take look sketches Bird Dog II adapters Adapter No 2 antenna detector circuit built handy thing have youre running transmitter impound plug input Bird Dog II touch search coil antenna eaci transmitter impound discover left switched can also use find noise sources around home such damaged 110VAC line cords loose connections wall boxes light bulbs loose theii sockets etc noises finds around battery chargers computers might interest Im sure-that will find-it useful Continued page 125 122 Model Aviation %\tKYWAY W THE JOURNAL OF THE AIRPLANE 1920 1940TIlE EARLY AEROPLAnE Leo Opdycke EditorKenn Rust Editor WW1 AERO 19001919 SKYWAYS 19201940 two Journals contain information current prolects orical research news museums airshows shop notes technical drawings data information paint color photographs aeroplanes engines parts sale scale modelling material PLUS wants disposals news current publications kinds PLUS more. Sample copies $4 Published WORLD WAR 1 2Mtp/anes INC 15 Crescent Road Poughkecpste NY 12601 USA 914 473-3679 Original Home Machine Shop De8lpned USA Shopteak INNOVATIVE MODEL PRODUCTS HAS THE RIGHT STUFF HAWKER HURRICANE 0140 TO HAVE ThIESPITFIRE BUT IT 1060 TO HOVE THE HURRICANE 0001 0001 0005 eons USOVOA OhOOL nnnoy 0010 n Po yasto Hand Lod F berg ago 1/Olin SagS Fine aoeWingnpeo.8O looSen Coniplein Soles HardwareFace Length. 0333 noSes Packages IndadedWeght.r2 15 Lbs Machine Ccl Foan Wing CoresPowen.Ocy90 TorSO 4cy 120 Heasy Ocly Slyrene Clean CanopyInnrna Loal / Fibargiaso CowlEase Han Molded Slongoos / Ea oR d Ea p o FlyFonellent Soginners Warbird AOesuaOla AoMSl 550540 Pops Static Fining Op ua $04 faa oa 155a Ule tigOn P110w Ratlado SAndal9 Lag Other nilE Kin ab.FoehwIflag-dFooawaifngoannoio P0000 20060 Ta 106 400 100 44 Fee SOi 006 Pe30x43e8owarsegaeaaoaPHONEORDERS NSNGATI IT 33 500 Ol0e 0000105 1-800-780-3190 2118 811141122 ~5gJ 1-800-388-3190 MODEL PRODUCTS INC BRINGS YOU. nnnsownappM/ SUPER STRONG j hnooflawableand/ SUPER FLEXDJLE wyslesen/ SUPER FASTU GRIPS TiGHT WHERE OThERS DONTTM REND VASLE WIThOUT TRACESUPER ADHESIVE BIG 37oz TUBE P0 8ox4368AIoogohlebo,$995 Mergate FL 33063Hobby Lobby Totally Clear Simple Uou Gop Part tOo MIxing Holds Caroyles ANY Mateygl Including PigoSt Conedogo 80 Fogging Os Clear Parts Holds FlrsaleO Fibergigos Alloas Salvos Mocoted Aoryeltere 851001 Foar Totally Remooletle Wtsioat Caasing Oaorage PPM. available hobby retailer call Innovative Model Products Toll Free 8001780-3190 18001308-3190 Dowler Inquiries Wanted Add $250 SOt-Il PPM USED BY hf PUOS Cal Ad Johoson 15 NC Modeler Aera aS 1018111 * Ilanros Tames Ikeastem WlntarAod US Scale Team Norm Goper lEdItot Scale R ModelerI Flunk CooteSo ICleocHiot Flying ModelsI Greg Nanney ISoeSreastem CeobSeitor Scale R Modeler Masters CompeitorI Mike MOt ISaper Star HelIcopter P11011 PPM DOES ThE Walk OP MANY ADIIESIWS See As Thread Lodn BeINr Stonore Sites 1/4 Ttre time BettarTlran C/AS Attunlriog Clogeles Aed PlasOc Flberglus Parts Tie both adapters Bird Dog H bit string thread Otherwise guarantee wont able find want newcomers others us memories may perfect presentation combines features presented Radio Technique columns January 82 May 84 new Bird Dog II doesnt work check turned battery good volume turned up check have plugged adapter Input Ext Spkr socket Onward Single-Conversion Receivers Next comes letter Glen Roberts Rocket City RC Huntsville Alabama Dear George say narrow-band receiver single-conversion type like JR ABC&W receiver will see 21M interference Ron Van Putte quotes Warren Plohr saying Receivers singleconversion superheterodyne type using 455-kHz intermediate frequency cause concern reference 21M 23-channels-apart interference have Futaba Rll4H Rl17H single conversion receivers listed certified AMA News section Model Aviation s answer Dear Glen Old single-conversion 455-kHz receivers suspect because virtually wideband AM designs call OWBAMS can affected kinds interference new 50-channel environment OWBAMS can see interference transmitters 23 channel numbers away called second-order intermodulation interference call 21M Dual-conversion receivers naturally immune in-band Image secondorder interference Mostbut allof receivers have certified AMA dual-conversion designs few new redesigned singleconversion 455-kHz receivers such JR ABC&W FM receivers will minimize Image 45- 46-channel separation second-order intermodulation 23-channel separation 20-kHz adjacent-channel odd/even RC channels interference receivers have reported AMA being capable meeting AMA Guidelines 1991 narrow-band performance listed AMA News section magazine Futaba has submitted reports show new models 114 117 receivers deliver narrow-band performance As data point racing electric hydroplanes friend last Sunday 75 MHz boat channels RC88 RC89 has Attack system Gold Sticker Ri 14H receiver no interference earlier statement attributed Warren Plohr expressed concern people continue use OWBAM receivers Thanks writing Continued page 126 Flown TOC Solid Liglstwelght Touenenlfteo PlatOons DesIgned Predoton Flyer STADILIZOR Allows Acceas 111gb Teds Treesseottleo Posocliens PIta Propular RadIos Attgdtmeot Now slip Steep ft Quality Alsmimoo Solid Walnut Pads fs / PoslogeA // Hon /anoot Money Onden KDI a0426 SE 206111 P1 Keos WA 88031 [Men 4OO pm] 12061 854-8053 B&P Associates Gives Total Flight Line FREEDOM new electnC starter battery pack cuts cord has always tied Starter power panel Discover freedom being able Start plane wherever added safety less wire get caught prop charge hefty 4 Amp/hour pack will take through weekend flying power enough spare dont stop have Ni-Cads virtually size imaginable cut experimenter free design whatever takes make yours best setup field battery needs call write B&P Associates PO Box 22054 Waco TX 76702-2054 817662-5587 September 1991 125 FCC has released Report & Order responding AMAs request refinement FCC Type Acceptance Criteria summary new law 1 Effective March 1 1992 RC transmitters submitted FCC Type Acceptance must conform narrow-band criteria 2 Effective March 1 1993 marketing wideband RC transmitters must cease 3 Wideband RC transmitters put service prior March 1 1993 may used until March 1 1998 AMA requirement Gold Stickers 72-MHz RC transmitters used sanctioned competition took effect January 1 1991 continues effect Nobody has yet mandated narrow-band receivers need survive 1991 environmentespecially fly vicinity large urban areas related matter FCC has granted Robertson Engineering waiver continue its previously illegal use 75 MHz Non-Aircraft frequencies control commercial cranes Take evidence people out covet RC frequencies will seek use means patently illegal infringement frequencies commercial users has tolerated FCC situation establishes precedent next attack must remain vigilant report such operations AMA Headquarters AMA will fight such encroachments knows about II RC Giant/de Vries Continued page 16 indicate 220 230 clock Stearman PT-17 did everything except loops Immelmanns 95 mph Consolidated PBY went everywhere sizzling 105 references show Flying Fortress capable over 250 mph sitting copilots seat read lumbering 150 mph cruised Ohio skies T-6 Texan Beech C-45 would flown cross-country between 140 150 mph P-40N Warhawk might indicate 190 Thats considerably slower 250-mph red line T-6 300 max speed Hawk too will easier miniature pilot model Curtiss slow up tad Pointing nose P-40 earthward would increase its speed expense airplane driver stomp right rudder might main keep Warhawk going straightthe offset fin designed minimize torque low airspeeds pulled bird strongly left airspeeds increased Its true supercharger-equipped warbirds could maintain indicated airspeeds altitude increased Considering effect increased altitude true airspeeds would increase substantially However cruising power settings max airspeeds would never attained point discussion striving realism flight Giant Scalers should consider cruising airspeeds rather maximum airspeeds prototype aircraft flight patterns Most time real planes arent flown full-bore nor should models altitudes below 10000 ft Douglas B-26 could outrun P-S lH Northrup P-61 could easily outmaneuver P-S lD So unless youre flying model P-51 Reno racer pull back smidgen go stick throttle control level off model will provide realistic flight speed youll save gas Its middle flying season Lets go club field bore some holesD RENEW 2 See Card Page 99 Custom Graphics corate model stars circles triangles club logos scale manufacturers insignia K name itl Peal stick remove masking end its K done AMP Graphics prespaced alignment assured costa littlel Try us K AMA number combination 10 letters K numbers computer cut 2 high black whitel ppd introductory price $295 K printed information send $100 p&h K dont delay inquire now have information need iti Call write todayK KAMP Inc Graphics Dept MA PO Box 793K DeerParkNY11729 516 363-5206 NyS Itesidents add miss tasK 126 Model Aviation Late News MicroMarK IThe Small Tool Specialists IOVER 1000 TOOLS & ACCESSORIESFO Brand Names Unusual Items Exclusive Products savings up ~~rAll designed make project enjoyable professional TO ORDER Send $100 name addressj ADDRESS Snyder Ave L Berkeley HeightsO721595ciTY
Edition: Model Aviation - 1991/09
Page Numbers: 11, 12, 122, 125, 126
Whats Bulletproof MY TELEPHONE RINGS voice other end says Goorge Whats wrong channel 44 area answer Nothing know Whats problem voice goes Well flying Cedar Creek about 75 people present airplane got hit saw interferenceGMM transmitter has upgraded Gold Sticker performance use RCD narrow-band receiver thought supposed bulletproof Whats going have scanner can check things out voice belonged Vinrie Pollizzotto friend lives old hometown Oceanside New York explained least four explanations problems decreasing order probability 1 Most likely Someone switched transmitter same manufacture type AM FM PCM channel No receiver bulletproof PCM usually improves resistance such interference also get some help fact manufacturers things differently Airtronics Futaba narrowband FM sets rarely interfere another 2 The interference might airplane such broken antenna wire dirty contacts servo plugs bad switch harness broken separated wires worn-out servos bad battery pack some metal-to-metal clattering On/Off switch same side airplane engines exhaust fuel frequently gets switch causes kinds problems 3 The antenna transmitter might loose might bad contacts broken wires inside transmitter 4 There might actually some Radio Frequency Interference RFI area Next Scanning Interference Radio frequency interference RFI what look scanner after have eliminated other simpler possibilities RFI includes usual stuff such Image 21M 31M H I1Z473Q /lo Cut Off Wire Protective Sleeve ADAPTER No 1 PIGTAIL 12 Wire 1 N9 14 Note Band Positions 1 pf Disk Capacitor ADAPTER No 2 ANTENNA Manufacturer Wire Color Function Connection JR Orange Signal Red ected Brown taba White Signal Red ected Black rtronics Black 1 Signal Black 2 /Red Bk/Wh ected ACE RIO Blue Signal Red ected Black tec Yellow Signal Red ected Black her manufacturers will use similar codes details make two adapters use Bird Dog ii RC channel monitor splattering transmitter adjacent channel powerful wideband transmitter some other service etc Since Vinnie has dual-conversion narrow-band receiver RCD can discount 21M Image problems newcomers 21M second-order intermodulation interference 31M thirdSeptember 1991 11 George M Myers AC Flying Today 7OFroehIIchFaamRd HIcbvWeNY 11801 Abstract Bulletproof receivers scanfling models RC channel interfer ence Bird Dog II narrow-band sin gle conversion receivers Late news new FCC rules update Robertson En gineering case Myers ira uog ii monijor connecica piane s receiver will desuct radio interference FAIRCHILD 24 GIANT SCALE 90 STINSON SR-8 115 SCALE 100 DeHAVILLANO BEAVER GIANT SCALE 96 K t order intermodulation interference splattering transmitter radiates energy over wider portion spectrum supposed radiates spikes other frequencies Now say So find out whats causing problem answer some tests radio system pretty sophisticated test set Just observing what servos can detect following A Someone else channel Turn receiver before transmitter B RFI Use same procedure C You have trouble transmitter Shake system D You have trouble airplane Shake system Have two friends hold plane its wings engine running can move sticks watch what servos Bird Dog II previous five steps good enough have cheap scanner No crystals needed scans channel receiver need scan works AM FM PCM channel 27 MHz Ham Band 72 MHz some European frequency Sound interesting Begin purchasing palm-sized Audio Amplifier-Speaker local Radio Shack Cat No 277-1008C about $12 store comes card gets free battery per month Remember ask free 9V transistor battery because youll need Also buy two %-in miniature phone plugs Cat No 274286A high frequency diodes 276-1122 5pf capacitors 272-120 some wire Next cut pigtail off dead servo servo-plug end off aileron extender cable make connection receiver available Useful hint friend Norm Rosenstock JR Radio plug almost universal tool will fit sockets such Futaba J socket in-line plug right-angle-plug type well late model Aristocraft HiContinued page 122 12 Model Aviation fine kits include Preformed landing gear cut parts aces Drawn Control horns lete plans rglass cowls pants Bellcranks ity hand selected balsa ow acetate Screws ct spruce ruction manual photo page order Call 208 773-9001 log fine kits $400 MAULE M51M6 ROCKET 114 SCALE gg STITS PLAYBOY 113 SCALE 88 SPERRY MEENGER IA WACO 10 115 SCALE 73 yourself favor IKON NWST Kit n world wide finest scale kits Adapter No 2 has plugged Bird Dog II show find transmitter WhICfl has left setup can very useful someone running transmitter impound - w m 0 U End frustration embarrassment hard-to-start 2- 4-cycle glow-model engines FAST START helps prevent drowning glow plug providing high percentage ignitable fuel oxy gen engines combustion chamber Work wonders hot days hot flooded engines Quickly starts engines cold days everyone else having problem Just add few drops carburetor prior propping Complete instruc tions included Call Toll Free 1 800 5338543 ag Gold Formula FAST START cold weather starting Order No 7621 . 4 fi oz unit dropper top Sug List $495Now Just $400 Green Formula FAST START hot weather hot engine starting Order No 7624 . 4 ft oz unit dropper top Sug List $495Now Just $400 See yourdealerororderdirect ad OrderUnit p~IptIoflioeTotal Cod Weocho 7621 G dF oooFAST $400$ 7624 C F neolo FAST $400 $ START Ho Woother Sub Total $ MN Res Add 0% Sales Tax$ Postage & Handling 5550 poe Item 5450/mao$ TOTAL$ C Check money order enclosed Charge C VIsa E Mastercard Card No_______ _______ -_______ Exp Dale. SIgnature Send Sween Jd Poducls Inc PO Box 8300 nkato MN 56001 RC Flying Today George M Myers Continued page 12 Tec sockets color code sequences same black red something also fits Airtronics socketbut pin assignments different careful Bird Dog TI wont work Airtronics system unless use Airtromcs plug Carefully observe side socket gets black wire paint white line receivers signal-pin side socket assist lining up plugs properly Make up two input adapters according sketches Use adapter time Plug adapter No 1 Bird Dog TI receiver listen several ways can 1 Before mount wing plug Bird Dog II aileron extender cable 2 Plug unused servo socket receiver 3 Use Y adapter share socket servo inside plane 4 Use aileron extender cable Y adapter bring test socket outside airplane 5 Plug Bird Dog II old wideband receiver channel Use monitor activity channel whether have plane fly Plug battery also make work good way get additional service old junk receivers ever once Bird Dog II installed properly turned will hear signal controls servo After perform few tests will learn difference between sound good signal interference Listen Bird Dog II everything operating normally Listen Bird Dog II have two transmitters operating channel difference sound interference don t hear difference don t have interference sound interference PCM systems subtle Most PCM systems will go fail-safe mode interference present Therefore sound hear will sound normalEXCEPT THAT YOE WONT BE ABLE TO MAKE ANY CHANGE IN THE SOUND BY MOVINC THE APPROPRIATE CONTROL ON THE TRANSMITTER Thats whats subtle about Test first switching whole system switching transmitter off Take look sketches Bird Dog II adapters Adapter No 2 antenna detector circuit built handy thing have youre running transmitter impound plug input Bird Dog II touch search coil antenna eaci transmitter impound discover left switched can also use find noise sources around home such damaged 110VAC line cords loose connections wall boxes light bulbs loose theii sockets etc noises finds around battery chargers computers might interest Im sure-that will find-it useful Continued page 125 122 Model Aviation %\tKYWAY W THE JOURNAL OF THE AIRPLANE 1920 1940TIlE EARLY AEROPLAnE Leo Opdycke EditorKenn Rust Editor WW1 AERO 19001919 SKYWAYS 19201940 two Journals contain information current prolects orical research news museums airshows shop notes technical drawings data information paint color photographs aeroplanes engines parts sale scale modelling material PLUS wants disposals news current publications kinds PLUS more. Sample copies $4 Published WORLD WAR 1 2Mtp/anes INC 15 Crescent Road Poughkecpste NY 12601 USA 914 473-3679 Original Home Machine Shop De8lpned USA Shopteak INNOVATIVE MODEL PRODUCTS HAS THE RIGHT STUFF HAWKER HURRICANE 0140 TO HAVE ThIESPITFIRE BUT IT 1060 TO HOVE THE HURRICANE 0001 0001 0005 eons USOVOA OhOOL nnnoy 0010 n Po yasto Hand Lod F berg ago 1/Olin SagS Fine aoeWingnpeo.8O looSen Coniplein Soles HardwareFace Length. 0333 noSes Packages IndadedWeght.r2 15 Lbs Machine Ccl Foan Wing CoresPowen.Ocy90 TorSO 4cy 120 Heasy Ocly Slyrene Clean CanopyInnrna Loal / Fibargiaso CowlEase Han Molded Slongoos / Ea oR d Ea p o FlyFonellent Soginners Warbird AOesuaOla AoMSl 550540 Pops Static Fining Op ua $04 faa oa 155a Ule tigOn P110w Ratlado SAndal9 Lag Other nilE Kin ab.FoehwIflag-dFooawaifngoannoio P0000 20060 Ta 106 400 100 44 Fee SOi 006 Pe30x43e8owarsegaeaaoaPHONEORDERS NSNGATI IT 33 500 Ol0e 0000105 1-800-780-3190 2118 811141122 ~5gJ 1-800-388-3190 MODEL PRODUCTS INC BRINGS YOU. nnnsownappM/ SUPER STRONG j hnooflawableand/ SUPER FLEXDJLE wyslesen/ SUPER FASTU GRIPS TiGHT WHERE OThERS DONTTM REND VASLE WIThOUT TRACESUPER ADHESIVE BIG 37oz TUBE P0 8ox4368AIoogohlebo,$995 Mergate FL 33063Hobby Lobby Totally Clear Simple Uou Gop Part tOo MIxing Holds Caroyles ANY Mateygl Including PigoSt Conedogo 80 Fogging Os Clear Parts Holds FlrsaleO Fibergigos Alloas Salvos Mocoted Aoryeltere 851001 Foar Totally Remooletle Wtsioat Caasing Oaorage PPM. available hobby retailer call Innovative Model Products Toll Free 8001780-3190 18001308-3190 Dowler Inquiries Wanted Add $250 SOt-Il PPM USED BY hf PUOS Cal Ad Johoson 15 NC Modeler Aera aS 1018111 * Ilanros Tames Ikeastem WlntarAod US Scale Team Norm Goper lEdItot Scale R ModelerI Flunk CooteSo ICleocHiot Flying ModelsI Greg Nanney ISoeSreastem CeobSeitor Scale R Modeler Masters CompeitorI Mike MOt ISaper Star HelIcopter P11011 PPM DOES ThE Walk OP MANY ADIIESIWS See As Thread Lodn BeINr Stonore Sites 1/4 Ttre time BettarTlran C/AS Attunlriog Clogeles Aed PlasOc Flberglus Parts Tie both adapters Bird Dog H bit string thread Otherwise guarantee wont able find want newcomers others us memories may perfect presentation combines features presented Radio Technique columns January 82 May 84 new Bird Dog II doesnt work check turned battery good volume turned up check have plugged adapter Input Ext Spkr socket Onward Single-Conversion Receivers Next comes letter Glen Roberts Rocket City RC Huntsville Alabama Dear George say narrow-band receiver single-conversion type like JR ABC&W receiver will see 21M interference Ron Van Putte quotes Warren Plohr saying Receivers singleconversion superheterodyne type using 455-kHz intermediate frequency cause concern reference 21M 23-channels-apart interference have Futaba Rll4H Rl17H single conversion receivers listed certified AMA News section Model Aviation s answer Dear Glen Old single-conversion 455-kHz receivers suspect because virtually wideband AM designs call OWBAMS can affected kinds interference new 50-channel environment OWBAMS can see interference transmitters 23 channel numbers away called second-order intermodulation interference call 21M Dual-conversion receivers naturally immune in-band Image secondorder interference Mostbut allof receivers have certified AMA dual-conversion designs few new redesigned singleconversion 455-kHz receivers such JR ABC&W FM receivers will minimize Image 45- 46-channel separation second-order intermodulation 23-channel separation 20-kHz adjacent-channel odd/even RC channels interference receivers have reported AMA being capable meeting AMA Guidelines 1991 narrow-band performance listed AMA News section magazine Futaba has submitted reports show new models 114 117 receivers deliver narrow-band performance As data point racing electric hydroplanes friend last Sunday 75 MHz boat channels RC88 RC89 has Attack system Gold Sticker Ri 14H receiver no interference earlier statement attributed Warren Plohr expressed concern people continue use OWBAM receivers Thanks writing Continued page 126 Flown TOC Solid Liglstwelght Touenenlfteo PlatOons DesIgned Predoton Flyer STADILIZOR Allows Acceas 111gb Teds Treesseottleo Posocliens PIta Propular RadIos Attgdtmeot Now slip Steep ft Quality Alsmimoo Solid Walnut Pads fs / PoslogeA // Hon /anoot Money Onden KDI a0426 SE 206111 P1 Keos WA 88031 [Men 4OO pm] 12061 854-8053 B&P Associates Gives Total Flight Line FREEDOM new electnC starter battery pack cuts cord has always tied Starter power panel Discover freedom being able Start plane wherever added safety less wire get caught prop charge hefty 4 Amp/hour pack will take through weekend flying power enough spare dont stop have Ni-Cads virtually size imaginable cut experimenter free design whatever takes make yours best setup field battery needs call write B&P Associates PO Box 22054 Waco TX 76702-2054 817662-5587 September 1991 125 FCC has released Report & Order responding AMAs request refinement FCC Type Acceptance Criteria summary new law 1 Effective March 1 1992 RC transmitters submitted FCC Type Acceptance must conform narrow-band criteria 2 Effective March 1 1993 marketing wideband RC transmitters must cease 3 Wideband RC transmitters put service prior March 1 1993 may used until March 1 1998 AMA requirement Gold Stickers 72-MHz RC transmitters used sanctioned competition took effect January 1 1991 continues effect Nobody has yet mandated narrow-band receivers need survive 1991 environmentespecially fly vicinity large urban areas related matter FCC has granted Robertson Engineering waiver continue its previously illegal use 75 MHz Non-Aircraft frequencies control commercial cranes Take evidence people out covet RC frequencies will seek use means patently illegal infringement frequencies commercial users has tolerated FCC situation establishes precedent next attack must remain vigilant report such operations AMA Headquarters AMA will fight such encroachments knows about II RC Giant/de Vries Continued page 16 indicate 220 230 clock Stearman PT-17 did everything except loops Immelmanns 95 mph Consolidated PBY went everywhere sizzling 105 references show Flying Fortress capable over 250 mph sitting copilots seat read lumbering 150 mph cruised Ohio skies T-6 Texan Beech C-45 would flown cross-country between 140 150 mph P-40N Warhawk might indicate 190 Thats considerably slower 250-mph red line T-6 300 max speed Hawk too will easier miniature pilot model Curtiss slow up tad Pointing nose P-40 earthward would increase its speed expense airplane driver stomp right rudder might main keep Warhawk going straightthe offset fin designed minimize torque low airspeeds pulled bird strongly left airspeeds increased Its true supercharger-equipped warbirds could maintain indicated airspeeds altitude increased Considering effect increased altitude true airspeeds would increase substantially However cruising power settings max airspeeds would never attained point discussion striving realism flight Giant Scalers should consider cruising airspeeds rather maximum airspeeds prototype aircraft flight patterns Most time real planes arent flown full-bore nor should models altitudes below 10000 ft Douglas B-26 could outrun P-S lH Northrup P-61 could easily outmaneuver P-S lD So unless youre flying model P-51 Reno racer pull back smidgen go stick throttle control level off model will provide realistic flight speed youll save gas Its middle flying season Lets go club field bore some holesD RENEW 2 See Card Page 99 Custom Graphics corate model stars circles triangles club logos scale manufacturers insignia K name itl Peal stick remove masking end its K done AMP Graphics prespaced alignment assured costa littlel Try us K AMA number combination 10 letters K numbers computer cut 2 high black whitel ppd introductory price $295 K printed information send $100 p&h K dont delay inquire now have information need iti Call write todayK KAMP Inc Graphics Dept MA PO Box 793K DeerParkNY11729 516 363-5206 NyS Itesidents add miss tasK 126 Model Aviation Late News MicroMarK IThe Small Tool Specialists IOVER 1000 TOOLS & ACCESSORIESFO Brand Names Unusual Items Exclusive Products savings up ~~rAll designed make project enjoyable professional TO ORDER Send $100 name addressj ADDRESS Snyder Ave L Berkeley HeightsO721595ciTY
Edition: Model Aviation - 1991/09
Page Numbers: 11, 12, 122, 125, 126
Whats Bulletproof MY TELEPHONE RINGS voice other end says Goorge Whats wrong channel 44 area answer Nothing know Whats problem voice goes Well flying Cedar Creek about 75 people present airplane got hit saw interferenceGMM transmitter has upgraded Gold Sticker performance use RCD narrow-band receiver thought supposed bulletproof Whats going have scanner can check things out voice belonged Vinrie Pollizzotto friend lives old hometown Oceanside New York explained least four explanations problems decreasing order probability 1 Most likely Someone switched transmitter same manufacture type AM FM PCM channel No receiver bulletproof PCM usually improves resistance such interference also get some help fact manufacturers things differently Airtronics Futaba narrowband FM sets rarely interfere another 2 The interference might airplane such broken antenna wire dirty contacts servo plugs bad switch harness broken separated wires worn-out servos bad battery pack some metal-to-metal clattering On/Off switch same side airplane engines exhaust fuel frequently gets switch causes kinds problems 3 The antenna transmitter might loose might bad contacts broken wires inside transmitter 4 There might actually some Radio Frequency Interference RFI area Next Scanning Interference Radio frequency interference RFI what look scanner after have eliminated other simpler possibilities RFI includes usual stuff such Image 21M 31M H I1Z473Q /lo Cut Off Wire Protective Sleeve ADAPTER No 1 PIGTAIL 12 Wire 1 N9 14 Note Band Positions 1 pf Disk Capacitor ADAPTER No 2 ANTENNA Manufacturer Wire Color Function Connection JR Orange Signal Red ected Brown taba White Signal Red ected Black rtronics Black 1 Signal Black 2 /Red Bk/Wh ected ACE RIO Blue Signal Red ected Black tec Yellow Signal Red ected Black her manufacturers will use similar codes details make two adapters use Bird Dog ii RC channel monitor splattering transmitter adjacent channel powerful wideband transmitter some other service etc Since Vinnie has dual-conversion narrow-band receiver RCD can discount 21M Image problems newcomers 21M second-order intermodulation interference 31M thirdSeptember 1991 11 George M Myers AC Flying Today 7OFroehIIchFaamRd HIcbvWeNY 11801 Abstract Bulletproof receivers scanfling models RC channel interfer ence Bird Dog II narrow-band sin gle conversion receivers Late news new FCC rules update Robertson En gineering case Myers ira uog ii monijor connecica piane s receiver will desuct radio interference FAIRCHILD 24 GIANT SCALE 90 STINSON SR-8 115 SCALE 100 DeHAVILLANO BEAVER GIANT SCALE 96 K t order intermodulation interference splattering transmitter radiates energy over wider portion spectrum supposed radiates spikes other frequencies Now say So find out whats causing problem answer some tests radio system pretty sophisticated test set Just observing what servos can detect following A Someone else channel Turn receiver before transmitter B RFI Use same procedure C You have trouble transmitter Shake system D You have trouble airplane Shake system Have two friends hold plane its wings engine running can move sticks watch what servos Bird Dog II previous five steps good enough have cheap scanner No crystals needed scans channel receiver need scan works AM FM PCM channel 27 MHz Ham Band 72 MHz some European frequency Sound interesting Begin purchasing palm-sized Audio Amplifier-Speaker local Radio Shack Cat No 277-1008C about $12 store comes card gets free battery per month Remember ask free 9V transistor battery because youll need Also buy two %-in miniature phone plugs Cat No 274286A high frequency diodes 276-1122 5pf capacitors 272-120 some wire Next cut pigtail off dead servo servo-plug end off aileron extender cable make connection receiver available Useful hint friend Norm Rosenstock JR Radio plug almost universal tool will fit sockets such Futaba J socket in-line plug right-angle-plug type well late model Aristocraft HiContinued page 122 12 Model Aviation fine kits include Preformed landing gear cut parts aces Drawn Control horns lete plans rglass cowls pants Bellcranks ity hand selected balsa ow acetate Screws ct spruce ruction manual photo page order Call 208 773-9001 log fine kits $400 MAULE M51M6 ROCKET 114 SCALE gg STITS PLAYBOY 113 SCALE 88 SPERRY MEENGER IA WACO 10 115 SCALE 73 yourself favor IKON NWST Kit n world wide finest scale kits Adapter No 2 has plugged Bird Dog II show find transmitter WhICfl has left setup can very useful someone running transmitter impound - w m 0 U End frustration embarrassment hard-to-start 2- 4-cycle glow-model engines FAST START helps prevent drowning glow plug providing high percentage ignitable fuel oxy gen engines combustion chamber Work wonders hot days hot flooded engines Quickly starts engines cold days everyone else having problem Just add few drops carburetor prior propping Complete instruc tions included Call Toll Free 1 800 5338543 ag Gold Formula FAST START cold weather starting Order No 7621 . 4 fi oz unit dropper top Sug List $495Now Just $400 Green Formula FAST START hot weather hot engine starting Order No 7624 . 4 ft oz unit dropper top Sug List $495Now Just $400 See yourdealerororderdirect ad OrderUnit p~IptIoflioeTotal Cod Weocho 7621 G dF oooFAST $400$ 7624 C F neolo FAST $400 $ START Ho Woother Sub Total $ MN Res Add 0% Sales Tax$ Postage & Handling 5550 poe Item 5450/mao$ TOTAL$ C Check money order enclosed Charge C VIsa E Mastercard Card No_______ _______ -_______ Exp Dale. SIgnature Send Sween Jd Poducls Inc PO Box 8300 nkato MN 56001 RC Flying Today George M Myers Continued page 12 Tec sockets color code sequences same black red something also fits Airtronics socketbut pin assignments different careful Bird Dog TI wont work Airtronics system unless use Airtromcs plug Carefully observe side socket gets black wire paint white line receivers signal-pin side socket assist lining up plugs properly Make up two input adapters according sketches Use adapter time Plug adapter No 1 Bird Dog TI receiver listen several ways can 1 Before mount wing plug Bird Dog II aileron extender cable 2 Plug unused servo socket receiver 3 Use Y adapter share socket servo inside plane 4 Use aileron extender cable Y adapter bring test socket outside airplane 5 Plug Bird Dog II old wideband receiver channel Use monitor activity channel whether have plane fly Plug battery also make work good way get additional service old junk receivers ever once Bird Dog II installed properly turned will hear signal controls servo After perform few tests will learn difference between sound good signal interference Listen Bird Dog II everything operating normally Listen Bird Dog II have two transmitters operating channel difference sound interference don t hear difference don t have interference sound interference PCM systems subtle Most PCM systems will go fail-safe mode interference present Therefore sound hear will sound normalEXCEPT THAT YOE WONT BE ABLE TO MAKE ANY CHANGE IN THE SOUND BY MOVINC THE APPROPRIATE CONTROL ON THE TRANSMITTER Thats whats subtle about Test first switching whole system switching transmitter off Take look sketches Bird Dog II adapters Adapter No 2 antenna detector circuit built handy thing have youre running transmitter impound plug input Bird Dog II touch search coil antenna eaci transmitter impound discover left switched can also use find noise sources around home such damaged 110VAC line cords loose connections wall boxes light bulbs loose theii sockets etc noises finds around battery chargers computers might interest Im sure-that will find-it useful Continued page 125 122 Model Aviation %\tKYWAY W THE JOURNAL OF THE AIRPLANE 1920 1940TIlE EARLY AEROPLAnE Leo Opdycke EditorKenn Rust Editor WW1 AERO 19001919 SKYWAYS 19201940 two Journals contain information current prolects orical research news museums airshows shop notes technical drawings data information paint color photographs aeroplanes engines parts sale scale modelling material PLUS wants disposals news current publications kinds PLUS more. Sample copies $4 Published WORLD WAR 1 2Mtp/anes INC 15 Crescent Road Poughkecpste NY 12601 USA 914 473-3679 Original Home Machine Shop De8lpned USA Shopteak INNOVATIVE MODEL PRODUCTS HAS THE RIGHT STUFF HAWKER HURRICANE 0140 TO HAVE ThIESPITFIRE BUT IT 1060 TO HOVE THE HURRICANE 0001 0001 0005 eons USOVOA OhOOL nnnoy 0010 n Po yasto Hand Lod F berg ago 1/Olin SagS Fine aoeWingnpeo.8O looSen Coniplein Soles HardwareFace Length. 0333 noSes Packages IndadedWeght.r2 15 Lbs Machine Ccl Foan Wing CoresPowen.Ocy90 TorSO 4cy 120 Heasy Ocly Slyrene Clean CanopyInnrna Loal / Fibargiaso CowlEase Han Molded Slongoos / Ea oR d Ea p o FlyFonellent Soginners Warbird AOesuaOla AoMSl 550540 Pops Static Fining Op ua $04 faa oa 155a Ule tigOn P110w Ratlado SAndal9 Lag Other nilE Kin ab.FoehwIflag-dFooawaifngoannoio P0000 20060 Ta 106 400 100 44 Fee SOi 006 Pe30x43e8owarsegaeaaoaPHONEORDERS NSNGATI IT 33 500 Ol0e 0000105 1-800-780-3190 2118 811141122 ~5gJ 1-800-388-3190 MODEL PRODUCTS INC BRINGS YOU. nnnsownappM/ SUPER STRONG j hnooflawableand/ SUPER FLEXDJLE wyslesen/ SUPER FASTU GRIPS TiGHT WHERE OThERS DONTTM REND VASLE WIThOUT TRACESUPER ADHESIVE BIG 37oz TUBE P0 8ox4368AIoogohlebo,$995 Mergate FL 33063Hobby Lobby Totally Clear Simple Uou Gop Part tOo MIxing Holds Caroyles ANY Mateygl Including PigoSt Conedogo 80 Fogging Os Clear Parts Holds FlrsaleO Fibergigos Alloas Salvos Mocoted Aoryeltere 851001 Foar Totally Remooletle Wtsioat Caasing Oaorage PPM. available hobby retailer call Innovative Model Products Toll Free 8001780-3190 18001308-3190 Dowler Inquiries Wanted Add $250 SOt-Il PPM USED BY hf PUOS Cal Ad Johoson 15 NC Modeler Aera aS 1018111 * Ilanros Tames Ikeastem WlntarAod US Scale Team Norm Goper lEdItot Scale R ModelerI Flunk CooteSo ICleocHiot Flying ModelsI Greg Nanney ISoeSreastem CeobSeitor Scale R Modeler Masters CompeitorI Mike MOt ISaper Star HelIcopter P11011 PPM DOES ThE Walk OP MANY ADIIESIWS See As Thread Lodn BeINr Stonore Sites 1/4 Ttre time BettarTlran C/AS Attunlriog Clogeles Aed PlasOc Flberglus Parts Tie both adapters Bird Dog H bit string thread Otherwise guarantee wont able find want newcomers others us memories may perfect presentation combines features presented Radio Technique columns January 82 May 84 new Bird Dog II doesnt work check turned battery good volume turned up check have plugged adapter Input Ext Spkr socket Onward Single-Conversion Receivers Next comes letter Glen Roberts Rocket City RC Huntsville Alabama Dear George say narrow-band receiver single-conversion type like JR ABC&W receiver will see 21M interference Ron Van Putte quotes Warren Plohr saying Receivers singleconversion superheterodyne type using 455-kHz intermediate frequency cause concern reference 21M 23-channels-apart interference have Futaba Rll4H Rl17H single conversion receivers listed certified AMA News section Model Aviation s answer Dear Glen Old single-conversion 455-kHz receivers suspect because virtually wideband AM designs call OWBAMS can affected kinds interference new 50-channel environment OWBAMS can see interference transmitters 23 channel numbers away called second-order intermodulation interference call 21M Dual-conversion receivers naturally immune in-band Image secondorder interference Mostbut allof receivers have certified AMA dual-conversion designs few new redesigned singleconversion 455-kHz receivers such JR ABC&W FM receivers will minimize Image 45- 46-channel separation second-order intermodulation 23-channel separation 20-kHz adjacent-channel odd/even RC channels interference receivers have reported AMA being capable meeting AMA Guidelines 1991 narrow-band performance listed AMA News section magazine Futaba has submitted reports show new models 114 117 receivers deliver narrow-band performance As data point racing electric hydroplanes friend last Sunday 75 MHz boat channels RC88 RC89 has Attack system Gold Sticker Ri 14H receiver no interference earlier statement attributed Warren Plohr expressed concern people continue use OWBAM receivers Thanks writing Continued page 126 Flown TOC Solid Liglstwelght Touenenlfteo PlatOons DesIgned Predoton Flyer STADILIZOR Allows Acceas 111gb Teds Treesseottleo Posocliens PIta Propular RadIos Attgdtmeot Now slip Steep ft Quality Alsmimoo Solid Walnut Pads fs / PoslogeA // Hon /anoot Money Onden KDI a0426 SE 206111 P1 Keos WA 88031 [Men 4OO pm] 12061 854-8053 B&P Associates Gives Total Flight Line FREEDOM new electnC starter battery pack cuts cord has always tied Starter power panel Discover freedom being able Start plane wherever added safety less wire get caught prop charge hefty 4 Amp/hour pack will take through weekend flying power enough spare dont stop have Ni-Cads virtually size imaginable cut experimenter free design whatever takes make yours best setup field battery needs call write B&P Associates PO Box 22054 Waco TX 76702-2054 817662-5587 September 1991 125 FCC has released Report & Order responding AMAs request refinement FCC Type Acceptance Criteria summary new law 1 Effective March 1 1992 RC transmitters submitted FCC Type Acceptance must conform narrow-band criteria 2 Effective March 1 1993 marketing wideband RC transmitters must cease 3 Wideband RC transmitters put service prior March 1 1993 may used until March 1 1998 AMA requirement Gold Stickers 72-MHz RC transmitters used sanctioned competition took effect January 1 1991 continues effect Nobody has yet mandated narrow-band receivers need survive 1991 environmentespecially fly vicinity large urban areas related matter FCC has granted Robertson Engineering waiver continue its previously illegal use 75 MHz Non-Aircraft frequencies control commercial cranes Take evidence people out covet RC frequencies will seek use means patently illegal infringement frequencies commercial users has tolerated FCC situation establishes precedent next attack must remain vigilant report such operations AMA Headquarters AMA will fight such encroachments knows about II RC Giant/de Vries Continued page 16 indicate 220 230 clock Stearman PT-17 did everything except loops Immelmanns 95 mph Consolidated PBY went everywhere sizzling 105 references show Flying Fortress capable over 250 mph sitting copilots seat read lumbering 150 mph cruised Ohio skies T-6 Texan Beech C-45 would flown cross-country between 140 150 mph P-40N Warhawk might indicate 190 Thats considerably slower 250-mph red line T-6 300 max speed Hawk too will easier miniature pilot model Curtiss slow up tad Pointing nose P-40 earthward would increase its speed expense airplane driver stomp right rudder might main keep Warhawk going straightthe offset fin designed minimize torque low airspeeds pulled bird strongly left airspeeds increased Its true supercharger-equipped warbirds could maintain indicated airspeeds altitude increased Considering effect increased altitude true airspeeds would increase substantially However cruising power settings max airspeeds would never attained point discussion striving realism flight Giant Scalers should consider cruising airspeeds rather maximum airspeeds prototype aircraft flight patterns Most time real planes arent flown full-bore nor should models altitudes below 10000 ft Douglas B-26 could outrun P-S lH Northrup P-61 could easily outmaneuver P-S lD So unless youre flying model P-51 Reno racer pull back smidgen go stick throttle control level off model will provide realistic flight speed youll save gas Its middle flying season Lets go club field bore some holesD RENEW 2 See Card Page 99 Custom Graphics corate model stars circles triangles club logos scale manufacturers insignia K name itl Peal stick remove masking end its K done AMP Graphics prespaced alignment assured costa littlel Try us K AMA number combination 10 letters K numbers computer cut 2 high black whitel ppd introductory price $295 K printed information send $100 p&h K dont delay inquire now have information need iti Call write todayK KAMP Inc Graphics Dept MA PO Box 793K DeerParkNY11729 516 363-5206 NyS Itesidents add miss tasK 126 Model Aviation Late News MicroMarK IThe Small Tool Specialists IOVER 1000 TOOLS & ACCESSORIESFO Brand Names Unusual Items Exclusive Products savings up ~~rAll designed make project enjoyable professional TO ORDER Send $100 name addressj ADDRESS Snyder Ave L Berkeley HeightsO721595ciTY
Edition: Model Aviation - 1991/09
Page Numbers: 11, 12, 122, 125, 126
Whats Bulletproof MY TELEPHONE RINGS voice other end says Goorge Whats wrong channel 44 area answer Nothing know Whats problem voice goes Well flying Cedar Creek about 75 people present airplane got hit saw interferenceGMM transmitter has upgraded Gold Sticker performance use RCD narrow-band receiver thought supposed bulletproof Whats going have scanner can check things out voice belonged Vinrie Pollizzotto friend lives old hometown Oceanside New York explained least four explanations problems decreasing order probability 1 Most likely Someone switched transmitter same manufacture type AM FM PCM channel No receiver bulletproof PCM usually improves resistance such interference also get some help fact manufacturers things differently Airtronics Futaba narrowband FM sets rarely interfere another 2 The interference might airplane such broken antenna wire dirty contacts servo plugs bad switch harness broken separated wires worn-out servos bad battery pack some metal-to-metal clattering On/Off switch same side airplane engines exhaust fuel frequently gets switch causes kinds problems 3 The antenna transmitter might loose might bad contacts broken wires inside transmitter 4 There might actually some Radio Frequency Interference RFI area Next Scanning Interference Radio frequency interference RFI what look scanner after have eliminated other simpler possibilities RFI includes usual stuff such Image 21M 31M H I1Z473Q /lo Cut Off Wire Protective Sleeve ADAPTER No 1 PIGTAIL 12 Wire 1 N9 14 Note Band Positions 1 pf Disk Capacitor ADAPTER No 2 ANTENNA Manufacturer Wire Color Function Connection JR Orange Signal Red ected Brown taba White Signal Red ected Black rtronics Black 1 Signal Black 2 /Red Bk/Wh ected ACE RIO Blue Signal Red ected Black tec Yellow Signal Red ected Black her manufacturers will use similar codes details make two adapters use Bird Dog ii RC channel monitor splattering transmitter adjacent channel powerful wideband transmitter some other service etc Since Vinnie has dual-conversion narrow-band receiver RCD can discount 21M Image problems newcomers 21M second-order intermodulation interference 31M thirdSeptember 1991 11 George M Myers AC Flying Today 7OFroehIIchFaamRd HIcbvWeNY 11801 Abstract Bulletproof receivers scanfling models RC channel interfer ence Bird Dog II narrow-band sin gle conversion receivers Late news new FCC rules update Robertson En gineering case Myers ira uog ii monijor connecica piane s receiver will desuct radio interference FAIRCHILD 24 GIANT SCALE 90 STINSON SR-8 115 SCALE 100 DeHAVILLANO BEAVER GIANT SCALE 96 K t order intermodulation interference splattering transmitter radiates energy over wider portion spectrum supposed radiates spikes other frequencies Now say So find out whats causing problem answer some tests radio system pretty sophisticated test set Just observing what servos can detect following A Someone else channel Turn receiver before transmitter B RFI Use same procedure C You have trouble transmitter Shake system D You have trouble airplane Shake system Have two friends hold plane its wings engine running can move sticks watch what servos Bird Dog II previous five steps good enough have cheap scanner No crystals needed scans channel receiver need scan works AM FM PCM channel 27 MHz Ham Band 72 MHz some European frequency Sound interesting Begin purchasing palm-sized Audio Amplifier-Speaker local Radio Shack Cat No 277-1008C about $12 store comes card gets free battery per month Remember ask free 9V transistor battery because youll need Also buy two %-in miniature phone plugs Cat No 274286A high frequency diodes 276-1122 5pf capacitors 272-120 some wire Next cut pigtail off dead servo servo-plug end off aileron extender cable make connection receiver available Useful hint friend Norm Rosenstock JR Radio plug almost universal tool will fit sockets such Futaba J socket in-line plug right-angle-plug type well late model Aristocraft HiContinued page 122 12 Model Aviation fine kits include Preformed landing gear cut parts aces Drawn Control horns lete plans rglass cowls pants Bellcranks ity hand selected balsa ow acetate Screws ct spruce ruction manual photo page order Call 208 773-9001 log fine kits $400 MAULE M51M6 ROCKET 114 SCALE gg STITS PLAYBOY 113 SCALE 88 SPERRY MEENGER IA WACO 10 115 SCALE 73 yourself favor IKON NWST Kit n world wide finest scale kits Adapter No 2 has plugged Bird Dog II show find transmitter WhICfl has left setup can very useful someone running transmitter impound - w m 0 U End frustration embarrassment hard-to-start 2- 4-cycle glow-model engines FAST START helps prevent drowning glow plug providing high percentage ignitable fuel oxy gen engines combustion chamber Work wonders hot days hot flooded engines Quickly starts engines cold days everyone else having problem Just add few drops carburetor prior propping Complete instruc tions included Call Toll Free 1 800 5338543 ag Gold Formula FAST START cold weather starting Order No 7621 . 4 fi oz unit dropper top Sug List $495Now Just $400 Green Formula FAST START hot weather hot engine starting Order No 7624 . 4 ft oz unit dropper top Sug List $495Now Just $400 See yourdealerororderdirect ad OrderUnit p~IptIoflioeTotal Cod Weocho 7621 G dF oooFAST $400$ 7624 C F neolo FAST $400 $ START Ho Woother Sub Total $ MN Res Add 0% Sales Tax$ Postage & Handling 5550 poe Item 5450/mao$ TOTAL$ C Check money order enclosed Charge C VIsa E Mastercard Card No_______ _______ -_______ Exp Dale. SIgnature Send Sween Jd Poducls Inc PO Box 8300 nkato MN 56001 RC Flying Today George M Myers Continued page 12 Tec sockets color code sequences same black red something also fits Airtronics socketbut pin assignments different careful Bird Dog TI wont work Airtronics system unless use Airtromcs plug Carefully observe side socket gets black wire paint white line receivers signal-pin side socket assist lining up plugs properly Make up two input adapters according sketches Use adapter time Plug adapter No 1 Bird Dog TI receiver listen several ways can 1 Before mount wing plug Bird Dog II aileron extender cable 2 Plug unused servo socket receiver 3 Use Y adapter share socket servo inside plane 4 Use aileron extender cable Y adapter bring test socket outside airplane 5 Plug Bird Dog II old wideband receiver channel Use monitor activity channel whether have plane fly Plug battery also make work good way get additional service old junk receivers ever once Bird Dog II installed properly turned will hear signal controls servo After perform few tests will learn difference between sound good signal interference Listen Bird Dog II everything operating normally Listen Bird Dog II have two transmitters operating channel difference sound interference don t hear difference don t have interference sound interference PCM systems subtle Most PCM systems will go fail-safe mode interference present Therefore sound hear will sound normalEXCEPT THAT YOE WONT BE ABLE TO MAKE ANY CHANGE IN THE SOUND BY MOVINC THE APPROPRIATE CONTROL ON THE TRANSMITTER Thats whats subtle about Test first switching whole system switching transmitter off Take look sketches Bird Dog II adapters Adapter No 2 antenna detector circuit built handy thing have youre running transmitter impound plug input Bird Dog II touch search coil antenna eaci transmitter impound discover left switched can also use find noise sources around home such damaged 110VAC line cords loose connections wall boxes light bulbs loose theii sockets etc noises finds around battery chargers computers might interest Im sure-that will find-it useful Continued page 125 122 Model Aviation %\tKYWAY W THE JOURNAL OF THE AIRPLANE 1920 1940TIlE EARLY AEROPLAnE Leo Opdycke EditorKenn Rust Editor WW1 AERO 19001919 SKYWAYS 19201940 two Journals contain information current prolects orical research news museums airshows shop notes technical drawings data information paint color photographs aeroplanes engines parts sale scale modelling material PLUS wants disposals news current publications kinds PLUS more. 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nnnsownappM/ SUPER STRONG j hnooflawableand/ SUPER FLEXDJLE wyslesen/ SUPER FASTU GRIPS TiGHT WHERE OThERS DONTTM REND VASLE WIThOUT TRACESUPER ADHESIVE BIG 37oz TUBE P0 8ox4368AIoogohlebo,$995 Mergate FL 33063Hobby Lobby Totally Clear Simple Uou Gop Part tOo MIxing Holds Caroyles ANY Mateygl Including PigoSt Conedogo 80 Fogging Os Clear Parts Holds FlrsaleO Fibergigos Alloas Salvos Mocoted Aoryeltere 851001 Foar Totally Remooletle Wtsioat Caasing Oaorage PPM. available hobby retailer call Innovative Model Products Toll Free 8001780-3190 18001308-3190 Dowler Inquiries Wanted Add $250 SOt-Il PPM USED BY hf PUOS Cal Ad Johoson 15 NC Modeler Aera aS 1018111 * Ilanros Tames Ikeastem WlntarAod US Scale Team Norm Goper lEdItot Scale R ModelerI Flunk CooteSo ICleocHiot Flying ModelsI Greg Nanney ISoeSreastem CeobSeitor Scale R Modeler Masters CompeitorI Mike MOt ISaper Star HelIcopter P11011 PPM DOES ThE Walk OP MANY ADIIESIWS See As Thread Lodn BeINr Stonore Sites 1/4 Ttre time BettarTlran C/AS Attunlriog Clogeles Aed PlasOc Flberglus Parts Tie both adapters Bird Dog H bit string thread Otherwise guarantee wont able find want newcomers others us memories may perfect presentation combines features presented Radio Technique columns January 82 May 84 new Bird Dog II doesnt work check turned battery good volume turned up check have plugged adapter Input Ext Spkr socket Onward Single-Conversion Receivers Next comes letter Glen Roberts Rocket City RC Huntsville Alabama Dear George say narrow-band receiver single-conversion type like JR ABC&W receiver will see 21M interference Ron Van Putte quotes Warren Plohr saying Receivers singleconversion superheterodyne type using 455-kHz intermediate frequency cause concern reference 21M 23-channels-apart interference have Futaba Rll4H Rl17H single conversion receivers listed certified AMA News section Model Aviation s answer Dear Glen Old single-conversion 455-kHz receivers suspect because virtually wideband AM designs call OWBAMS can affected kinds interference new 50-channel environment OWBAMS can see interference transmitters 23 channel numbers away called second-order intermodulation interference call 21M Dual-conversion receivers naturally immune in-band Image secondorder interference Mostbut allof receivers have certified AMA dual-conversion designs few new redesigned singleconversion 455-kHz receivers such JR ABC&W FM receivers will minimize Image 45- 46-channel separation second-order intermodulation 23-channel separation 20-kHz adjacent-channel odd/even RC channels interference receivers have reported AMA being capable meeting AMA Guidelines 1991 narrow-band performance listed AMA News section magazine Futaba has submitted reports show new models 114 117 receivers deliver narrow-band performance As data point racing electric hydroplanes friend last Sunday 75 MHz boat channels RC88 RC89 has Attack system Gold Sticker Ri 14H receiver no interference earlier statement attributed Warren Plohr expressed concern people continue use OWBAM receivers Thanks writing Continued page 126 Flown TOC Solid Liglstwelght Touenenlfteo PlatOons DesIgned Predoton Flyer STADILIZOR Allows Acceas 111gb Teds Treesseottleo Posocliens PIta Propular RadIos Attgdtmeot Now slip Steep ft Quality Alsmimoo Solid Walnut Pads fs / PoslogeA // Hon /anoot Money Onden KDI a0426 SE 206111 P1 Keos WA 88031 [Men 4OO pm] 12061 854-8053 B&P Associates Gives Total Flight Line FREEDOM new electnC starter battery pack cuts cord has always tied Starter power panel Discover freedom being able Start plane wherever added safety less wire get caught prop charge hefty 4 Amp/hour pack will take through weekend flying power enough spare dont stop have Ni-Cads virtually size imaginable cut experimenter free design whatever takes make yours best setup field battery needs call write B&P Associates PO Box 22054 Waco TX 76702-2054 817662-5587 September 1991 125 FCC has released Report & Order responding AMAs request refinement FCC Type Acceptance Criteria summary new law 1 Effective March 1 1992 RC transmitters submitted FCC Type Acceptance must conform narrow-band criteria 2 Effective March 1 1993 marketing wideband RC transmitters must cease 3 Wideband RC transmitters put service prior March 1 1993 may used until March 1 1998 AMA requirement Gold Stickers 72-MHz RC transmitters used sanctioned competition took effect January 1 1991 continues effect Nobody has yet mandated narrow-band receivers need survive 1991 environmentespecially fly vicinity large urban areas related matter FCC has granted Robertson Engineering waiver continue its previously illegal use 75 MHz Non-Aircraft frequencies control commercial cranes Take evidence people out covet RC frequencies will seek use means patently illegal infringement frequencies commercial users has tolerated FCC situation establishes precedent next attack must remain vigilant report such operations AMA Headquarters AMA will fight such encroachments knows about II RC Giant/de Vries Continued page 16 indicate 220 230 clock Stearman PT-17 did everything except loops Immelmanns 95 mph Consolidated PBY went everywhere sizzling 105 references show Flying Fortress capable over 250 mph sitting copilots seat read lumbering 150 mph cruised Ohio skies T-6 Texan Beech C-45 would flown cross-country between 140 150 mph P-40N Warhawk might indicate 190 Thats considerably slower 250-mph red line T-6 300 max speed Hawk too will easier miniature pilot model Curtiss slow up tad Pointing nose P-40 earthward would increase its speed expense airplane driver stomp right rudder might main keep Warhawk going straightthe offset fin designed minimize torque low airspeeds pulled bird strongly left airspeeds increased Its true supercharger-equipped warbirds could maintain indicated airspeeds altitude increased Considering effect increased altitude true airspeeds would increase substantially However cruising power settings max airspeeds would never attained point discussion striving realism flight Giant Scalers should consider cruising airspeeds rather maximum airspeeds prototype aircraft flight patterns Most time real planes arent flown full-bore nor should models altitudes below 10000 ft Douglas B-26 could outrun P-S lH Northrup P-61 could easily outmaneuver P-S lD So unless youre flying model P-51 Reno racer pull back smidgen go stick throttle control level off model will provide realistic flight speed youll save gas Its middle flying season Lets go club field bore some holesD RENEW 2 See Card Page 99 Custom Graphics corate model stars circles triangles club logos scale manufacturers insignia K name itl Peal stick remove masking end its K done AMP Graphics prespaced alignment assured costa littlel Try us K AMA number combination 10 letters K numbers computer cut 2 high black whitel ppd introductory price $295 K printed information send $100 p&h K dont delay inquire now have information need iti Call write todayK KAMP Inc Graphics Dept MA PO Box 793K DeerParkNY11729 516 363-5206 NyS Itesidents add miss tasK 126 Model Aviation Late News MicroMarK IThe Small Tool Specialists IOVER 1000 TOOLS & ACCESSORIESFO Brand Names Unusual Items Exclusive Products savings up ~~rAll designed make project enjoyable professional TO ORDER Send $100 name addressj ADDRESS Snyder Ave L Berkeley HeightsO721595ciTY