Radio Technique George M Myers BUILD ME Ill bet worst RFI radio-frequency interference comes source consider least Let ters Ive received conversations Ive other modelers lead sug gest devastating interference comes transmitters left turned ON should turned OFF true what impound operator really needs simple reliable tool discovering such oversights Enter John Lange AMAs DFC District Frequency Coordinator -at-large bearing RE Wand copy has donated AMA along permission publish following description structions Its value use demon strated LSF tournament FAI Sailplane trials summer 1983 John used catch few mistakes show man crying interference actually suffer ing effects own loose transmitter antenna John man shake transmitter both could hear signal cutting out RE Wand can waved over impounded transmitters AM FM PCM something left BR RRR sound comes wand No tuning needed no sound comes RE Wand unless transmitter operating vicinity Checking trans mitters impound area becomes simple bit like airport frisk opera tion Overall sensitivity such trans mitters flight line wont heard heard simply collapse RE Wand antenna little until dont hear As practical matter can RE Wand activities its tenna completely collapsed reserving extended antenna special cases What can ask Oh want cheap does under $20 strike Any person knows end soldering iron grab should able build less hour Johns instructions Materials RF Wand Buy following local Radio Shack store Part NoQty 277-1008A1 15-2321 Name Mini Amplifier-Speaker case 38 Replacement TV Antenna 276-1123 1N34A Diodes 272-126 001 mF Ceramk Disk Capacitors 2 2 Construction Open amplifier case snaps together remove amplifier board unsoldering speaker leads unscrewing knurled ring nuts input output jacks mounting screw board Remove input jack the middle board using soldering iron solder wick Remove solder lug antenna solder 001 disk capacitor see sketch Install two diodes 001 disk capacitor amplifier board shown sketch Mount antenna retapping its base Binder Head No 8 screw A-in 36 Model Aviation George ran young man Toleaowflo sent tnis message aii ot us Hanno rrett ncr demonstrably worids top Pattern filer Toledo show demon strate radios now being Imported Altech Marketing John Lange AMAs District Frequency Coordlnator-at-large sits booth Toledo show offering parts various fraquencylchannei monitor converters George has mentioned previous coiumns Listen RC channels car radio long assembling solder lug No 8 x % diameter washer spread load plastic case antenna middle hole case used serve input jack Reinstall amplifier reattach speaker leads connect disk capacitor antenna junction diodes install 9-volt battery try out doesnt work try different diodes put bands op posite way have Theory operation RF Wand con sists audio amplifier connected antenna way broad-band peak-topeak RF detector across input antenna captures RF energy detector strips off audio modulation am plifier presents detected modulation loudspeaker can hear Conventional AM RC transmitters will produce BRRRR sound changes sticks moved Two-channel RC transmitters will produce low growl four- through eight-channel trans mitters will produce faster growls FM RC transmitters will produce same sort sounds signal will seem weaker tip RF Wand will have held closer operating transmitter order produce sound PCM RC transmitters produce mushy whine turn up volume no RC transmitters operating vicinity may hear strong local com mercial radio stations Youll learn sounds first time use sensitivity Wand such wont hear transmitters working flight line 30 feet away hear simply collapse RF Wand tenna till dont can find trans mitters operating inside automobile holding RF Wand antenna near car window As mentioned earlier wand can discover damaged transmitter antennas Remember turn off RF Wand August 1 984 37 can construct RF Wand transmitter-monitor sketch Practically work has done you buy Radio Shack mini amplifier-speaker Continued page 140 Two vital tools todays RC club flying site frequency monitor RF Wand transmitterllmpound monitor frequen cy monitor Georges old Alrtronics unitwhich looks like latest newchannel uses plug-in crystais Theres no need panic impending appearance new SRF switchable radio frequency radios Keep cool John Slmones new Eagle Helicopter runs counter trend todays chopper kits toward bigger realistic Scale scalelike Helicopters stub wings heip John whole new world aerobatics should interesting Now Kit Form ElflBrown Continued page 137 quickly apply solder should melt flat puddle around joint solder forms little ball base metal material either 1 hot enough 2 clean enough 3 fluxed Practice piece scrap brass first will pick up knack quickly After solder job complete chip away encrusted flux rinse thoroughly water Du-Bro muffler strap workswell attaching muffler engine havent convinced try build ing own muffler Du-Bro Muff-l Aire II should work well little modification cowling Flying First few words about upside down engines Inverted engines harder start upright ones providing flip model belly-up start easiest way cradle Robart makes $11995 wIth large lInear servos $12995 wIth small rotary servos Seed SS fer complete cetmlog 509 487-2122 nice Styrofoam can build few pine boards short time youre careful prim ing can get inverted engine start regularly turning model upside down Just careful using electric starter engine does get hydraulic lock too much fuel prime resulting bent rod topic running inverted engines experience have never found inboard batteries necessary desirable keep glow plug lit idle Provided carburetor adjust ed correctly fuel tank placed properly engine will idle just well inverted upright minus side onboard plug lighter just adds weight potential fire hazard should something chort-circuit After youve adjusted engine idle made sure surface throws set correctly its time first flight takeoff prepared correct heading little right rudder Give full throttle short distance will lift off little up-elevator Once air climb safe altitude acquaint yourself its handling char acteristics Since theres lot wing area move about youll notice reacts very gently aileron control Co ordination rudder neces sary because aileron differential will snap things up quite bit landing dont afraid slow down Elf ready again use little rudder pull tail down touch up-elevator once begins slow ground enjoy Old-Timers cabin 6planes try Elf may never sweep SAM Championships like Old-Timers its loads fun fly Radio TechniquelMyers Continued page 37 youre using doesnt make sound unless transmitter operating Yicinity could put LED light-emitting diode pilot light would use battery cur rent wand does OK gang make up use Let John Lange know much appre ciate generosity writing him 1700 N 37th Ave Stone Park IL 60165 Toledo year met talked John Blue Thunder Simone photod Eagle Helicopter soon production wings enhance maneuverability John ex pects able perform whole new series aerobatics cant wait see time Helicopter wins aPat tern event Wholl first Several elaborate expeasive new RC sys tems shown Toledo Altech Simprop represented Hanno Ptett ner Miniature Aircraft Supply Co Multiplex being imported Walt Schoonard Futabas PM digi tal pulse-code modulation system So far Ive handled done testing Futaba PCM showed outstanding performance spite fact receiver single140 Model Aviation Save easy assemble 4 channel kit expandable 71 OnIy$ 7995 service parts available past manufactured EK Logitrol radios including Logitrol manufactured Cirrus Tower Hobby Lobby radios Y Free servo reversing Hobby Lobby radios included service work FCS-4 Four Channel Radio Wider body ends aching shoulder muscles Angled fdr easier monitering battery charge Designed easily accept new frequencies Servo reversing simply reversing plug Adjustable stick tension Inexpensive replacement servos 45OmAH battery pock I600mAH ft 1200mAH extral Expandable Full Command Systems 908 E Rosewood Spokane WA 99208 [HOT WIRE FOAM CUTlER ATTENTION ORATCH UVILIERS cutting foam wings ats turtle decks ny model parts n made foam ts over 7 foot wing span Operotes 12 alt motor cycle battery tith instructions 9 dealer order drect MtestainAe4Di Hawk PO lox 221 Mt Morris 1148458 AC K VTACH/PULSE C MOS Technology 4 Digit TaoS 150 40000 RPM 000 RPM Optroat Pick-Up 4 Digit Pulemeter Alumicum Case Hold Drsplay Scoitch Tooc NI-Cd Battehes Cng Poise Cables 10010454 Tachonreta uses 441011 LEDI RPM Xt0 Only last digit dropped Special tiller easier read soetight POLO soAtoh holds display RPM no need bend goes prop read Batteries 040rnai4NtCdl does use receloen batteries power ton Poise teadlngs 0100k Anodized Aluminum oase rugged Poise input ole cable Inom radio rsueioec servooc puts Also leclodes solden solder lice end shrink lit br Caching mating cosneotors charger poise cables better product modeler ,eersre LNA H8N ELEcTRONIcS55scseuest h4Iosrrrcereounr 01cc55100 jjkjce.rcenrocnoae,oenult ftEse,te sen a- @*. 24 insignia sheets also letters numbers 0 major decals available popular 40 -60sizes plus American Giant Scale size believe major decals have comprehensive assortment available now -with sizes styles coming time pressure sensitive water transfer Well bet line handing line.the complete line decals available model anywhere _OCAG youll love being handed major decals Ostributors nquiries invited TEL 413-525-4110 CONTACT YOUR LOCAL HOBBY SHOP OR WRITE OIREcT NORTHEAST SCREEN GRAPHICS 21 FISHER AVE. EAST LONOMEADOW MA 01020 conversion superhetrodyne affair PCM receiver rejects forms inter ference including direct on-channel transmissions some cases radio tested loaned Bob Aberle before moved Bob Hunt editor Flying Models will no doubt campaigning Pattern events throughout 1984 Bob Aberle get hands others well tell about big subject discussion Toledo Kraft switchable radio frequency SRF RC system MoM people lis tened Jack Albrechts explanation way worked favorably im pressed Some havent seen radio yet havent heard dis cussion calling ban Really guys thats no way business Ban ning system wont solve problem think someone might carelessly shoot down two forthright solutions 1 TrainingTeach newcomer about realities interference teach yourself use what have intel ligently 2 ImpoundingYou really should use impound area John Langes RF Wands primary concern some will shoot down deliberately have cheaper ways go about pocket full crystals Futaba Tower Airtronics transmitter name few sold plug-in crystals will cost less $50 Such being case would anyone spend over five times much job Kraft SRF plan deal problem SRF transmitters 1984 subsequent Nats following manner 1 Owners SRF transmitters wheth er way plug-in crystals modules RF boards synthesizers will asked declare themselves users channels listed AMA Phase-In Plan funny-colored flags 2 The Transmitter Processors will verify operation stated channel within applicable technical specifications correct antenna frequency channel flag mounted 3 The transmitters will sealed duration contest prevent advertent changes resultant poten tial mistakes 4 Impound areas monitors RF Wands will used flight line 5 Some Contest Directors may wish take advantage SRF capabilities resolve conflicts equalize popula tions available RC channels hav ing set-owners switch channels No prob lem takes another pass through transmitter processing line should likewise will productive ban will cost manpower keep trans mitter processing station could simple Airtronics Scanner veri fy transmitter same channel its flag open throughout contest George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 S2B2IUtasi Continued page 41 sure use Loctite threads pre vent backing out pop rivets really much safer 52B2 should wrapped foam RIDDIZ I 042l Ff\j UDLL E 1mm thick Boxed 16 oz rubber per boxSizes Price $1250 per box ppd USA flL KA WAKEFIELErgIsh $3888 pIe UPSBeilding Finished Front Endii end Flying InstruCtion Very Conplete Send SOC 1984/1 985 Oatalog F Al Model Supply It~S7ToeCAf051R 3, 32 1' 1' 3 4 Fine Quality Flying Models Catalog S 150 98 RUBBER POWER KITS plus Gliders C/L R/C Accessories Books 4 4 4 4 4 4 4 4 4 MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 August1984 141 Want REV-VP Props P 4uichie SOD Pattern & Sport 4 carter Midget Nuge Inventory ! New About Custom Tuned Engines P Detailed Drochure Sead 75 TO Kustoin Kuftsmanship RI lox 209 Ique Nuts CR 92654 Ph 714 5305162
Edition: Model Aviation - 1984/08
Page Numbers: 36, 37, 140, 141
Radio Technique George M Myers BUILD ME Ill bet worst RFI radio-frequency interference comes source consider least Let ters Ive received conversations Ive other modelers lead sug gest devastating interference comes transmitters left turned ON should turned OFF true what impound operator really needs simple reliable tool discovering such oversights Enter John Lange AMAs DFC District Frequency Coordinator -at-large bearing RE Wand copy has donated AMA along permission publish following description structions Its value use demon strated LSF tournament FAI Sailplane trials summer 1983 John used catch few mistakes show man crying interference actually suffer ing effects own loose transmitter antenna John man shake transmitter both could hear signal cutting out RE Wand can waved over impounded transmitters AM FM PCM something left BR RRR sound comes wand No tuning needed no sound comes RE Wand unless transmitter operating vicinity Checking trans mitters impound area becomes simple bit like airport frisk opera tion Overall sensitivity such trans mitters flight line wont heard heard simply collapse RE Wand antenna little until dont hear As practical matter can RE Wand activities its tenna completely collapsed reserving extended antenna special cases What can ask Oh want cheap does under $20 strike Any person knows end soldering iron grab should able build less hour Johns instructions Materials RF Wand Buy following local Radio Shack store Part NoQty 277-1008A1 15-2321 Name Mini Amplifier-Speaker case 38 Replacement TV Antenna 276-1123 1N34A Diodes 272-126 001 mF Ceramk Disk Capacitors 2 2 Construction Open amplifier case snaps together remove amplifier board unsoldering speaker leads unscrewing knurled ring nuts input output jacks mounting screw board Remove input jack the middle board using soldering iron solder wick Remove solder lug antenna solder 001 disk capacitor see sketch Install two diodes 001 disk capacitor amplifier board shown sketch Mount antenna retapping its base Binder Head No 8 screw A-in 36 Model Aviation George ran young man Toleaowflo sent tnis message aii ot us Hanno rrett ncr demonstrably worids top Pattern filer Toledo show demon strate radios now being Imported Altech Marketing John Lange AMAs District Frequency Coordlnator-at-large sits booth Toledo show offering parts various fraquencylchannei monitor converters George has mentioned previous coiumns Listen RC channels car radio long assembling solder lug No 8 x % diameter washer spread load plastic case antenna middle hole case used serve input jack Reinstall amplifier reattach speaker leads connect disk capacitor antenna junction diodes install 9-volt battery try out doesnt work try different diodes put bands op posite way have Theory operation RF Wand con sists audio amplifier connected antenna way broad-band peak-topeak RF detector across input antenna captures RF energy detector strips off audio modulation am plifier presents detected modulation loudspeaker can hear Conventional AM RC transmitters will produce BRRRR sound changes sticks moved Two-channel RC transmitters will produce low growl four- through eight-channel trans mitters will produce faster growls FM RC transmitters will produce same sort sounds signal will seem weaker tip RF Wand will have held closer operating transmitter order produce sound PCM RC transmitters produce mushy whine turn up volume no RC transmitters operating vicinity may hear strong local com mercial radio stations Youll learn sounds first time use sensitivity Wand such wont hear transmitters working flight line 30 feet away hear simply collapse RF Wand tenna till dont can find trans mitters operating inside automobile holding RF Wand antenna near car window As mentioned earlier wand can discover damaged transmitter antennas Remember turn off RF Wand August 1 984 37 can construct RF Wand transmitter-monitor sketch Practically work has done you buy Radio Shack mini amplifier-speaker Continued page 140 Two vital tools todays RC club flying site frequency monitor RF Wand transmitterllmpound monitor frequen cy monitor Georges old Alrtronics unitwhich looks like latest newchannel uses plug-in crystais Theres no need panic impending appearance new SRF switchable radio frequency radios Keep cool John Slmones new Eagle Helicopter runs counter trend todays chopper kits toward bigger realistic Scale scalelike Helicopters stub wings heip John whole new world aerobatics should interesting Now Kit Form ElflBrown Continued page 137 quickly apply solder should melt flat puddle around joint solder forms little ball base metal material either 1 hot enough 2 clean enough 3 fluxed Practice piece scrap brass first will pick up knack quickly After solder job complete chip away encrusted flux rinse thoroughly water Du-Bro muffler strap workswell attaching muffler engine havent convinced try build ing own muffler Du-Bro Muff-l Aire II should work well little modification cowling Flying First few words about upside down engines Inverted engines harder start upright ones providing flip model belly-up start easiest way cradle Robart makes $11995 wIth large lInear servos $12995 wIth small rotary servos Seed SS fer complete cetmlog 509 487-2122 nice Styrofoam can build few pine boards short time youre careful prim ing can get inverted engine start regularly turning model upside down Just careful using electric starter engine does get hydraulic lock too much fuel prime resulting bent rod topic running inverted engines experience have never found inboard batteries necessary desirable keep glow plug lit idle Provided carburetor adjust ed correctly fuel tank placed properly engine will idle just well inverted upright minus side onboard plug lighter just adds weight potential fire hazard should something chort-circuit After youve adjusted engine idle made sure surface throws set correctly its time first flight takeoff prepared correct heading little right rudder Give full throttle short distance will lift off little up-elevator Once air climb safe altitude acquaint yourself its handling char acteristics Since theres lot wing area move about youll notice reacts very gently aileron control Co ordination rudder neces sary because aileron differential will snap things up quite bit landing dont afraid slow down Elf ready again use little rudder pull tail down touch up-elevator once begins slow ground enjoy Old-Timers cabin 6planes try Elf may never sweep SAM Championships like Old-Timers its loads fun fly Radio TechniquelMyers Continued page 37 youre using doesnt make sound unless transmitter operating Yicinity could put LED light-emitting diode pilot light would use battery cur rent wand does OK gang make up use Let John Lange know much appre ciate generosity writing him 1700 N 37th Ave Stone Park IL 60165 Toledo year met talked John Blue Thunder Simone photod Eagle Helicopter soon production wings enhance maneuverability John ex pects able perform whole new series aerobatics cant wait see time Helicopter wins aPat tern event Wholl first Several elaborate expeasive new RC sys tems shown Toledo Altech Simprop represented Hanno Ptett ner Miniature Aircraft Supply Co Multiplex being imported Walt Schoonard Futabas PM digi tal pulse-code modulation system So far Ive handled done testing Futaba PCM showed outstanding performance spite fact receiver single140 Model Aviation Save easy assemble 4 channel kit expandable 71 OnIy$ 7995 service parts available past manufactured EK Logitrol radios including Logitrol manufactured Cirrus Tower Hobby Lobby radios Y Free servo reversing Hobby Lobby radios included service work FCS-4 Four Channel Radio Wider body ends aching shoulder muscles Angled fdr easier monitering battery charge Designed easily accept new frequencies Servo reversing simply reversing plug Adjustable stick tension Inexpensive replacement servos 45OmAH battery pock I600mAH ft 1200mAH extral Expandable Full Command Systems 908 E Rosewood Spokane WA 99208 [HOT WIRE FOAM CUTlER ATTENTION ORATCH UVILIERS cutting foam wings ats turtle decks ny model parts n made foam ts over 7 foot wing span Operotes 12 alt motor cycle battery tith instructions 9 dealer order drect MtestainAe4Di Hawk PO lox 221 Mt Morris 1148458 AC K VTACH/PULSE C MOS Technology 4 Digit TaoS 150 40000 RPM 000 RPM Optroat Pick-Up 4 Digit Pulemeter Alumicum Case Hold Drsplay Scoitch Tooc NI-Cd Battehes Cng Poise Cables 10010454 Tachonreta uses 441011 LEDI RPM Xt0 Only last digit dropped Special tiller easier read soetight POLO soAtoh holds display RPM no need bend goes prop read Batteries 040rnai4NtCdl does use receloen batteries power ton Poise teadlngs 0100k Anodized Aluminum oase rugged Poise input ole cable Inom radio rsueioec servooc puts Also leclodes solden solder lice end shrink lit br Caching mating cosneotors charger poise cables better product modeler ,eersre LNA H8N ELEcTRONIcS55scseuest h4Iosrrrcereounr 01cc55100 jjkjce.rcenrocnoae,oenult ftEse,te sen a- @*. 24 insignia sheets also letters numbers 0 major decals available popular 40 -60sizes plus American Giant Scale size believe major decals have comprehensive assortment available now -with sizes styles coming time pressure sensitive water transfer Well bet line handing line.the complete line decals available model anywhere _OCAG youll love being handed major decals Ostributors nquiries invited TEL 413-525-4110 CONTACT YOUR LOCAL HOBBY SHOP OR WRITE OIREcT NORTHEAST SCREEN GRAPHICS 21 FISHER AVE. EAST LONOMEADOW MA 01020 conversion superhetrodyne affair PCM receiver rejects forms inter ference including direct on-channel transmissions some cases radio tested loaned Bob Aberle before moved Bob Hunt editor Flying Models will no doubt campaigning Pattern events throughout 1984 Bob Aberle get hands others well tell about big subject discussion Toledo Kraft switchable radio frequency SRF RC system MoM people lis tened Jack Albrechts explanation way worked favorably im pressed Some havent seen radio yet havent heard dis cussion calling ban Really guys thats no way business Ban ning system wont solve problem think someone might carelessly shoot down two forthright solutions 1 TrainingTeach newcomer about realities interference teach yourself use what have intel ligently 2 ImpoundingYou really should use impound area John Langes RF Wands primary concern some will shoot down deliberately have cheaper ways go about pocket full crystals Futaba Tower Airtronics transmitter name few sold plug-in crystals will cost less $50 Such being case would anyone spend over five times much job Kraft SRF plan deal problem SRF transmitters 1984 subsequent Nats following manner 1 Owners SRF transmitters wheth er way plug-in crystals modules RF boards synthesizers will asked declare themselves users channels listed AMA Phase-In Plan funny-colored flags 2 The Transmitter Processors will verify operation stated channel within applicable technical specifications correct antenna frequency channel flag mounted 3 The transmitters will sealed duration contest prevent advertent changes resultant poten tial mistakes 4 Impound areas monitors RF Wands will used flight line 5 Some Contest Directors may wish take advantage SRF capabilities resolve conflicts equalize popula tions available RC channels hav ing set-owners switch channels No prob lem takes another pass through transmitter processing line should likewise will productive ban will cost manpower keep trans mitter processing station could simple Airtronics Scanner veri fy transmitter same channel its flag open throughout contest George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 S2B2IUtasi Continued page 41 sure use Loctite threads pre vent backing out pop rivets really much safer 52B2 should wrapped foam RIDDIZ I 042l Ff\j UDLL E 1mm thick Boxed 16 oz rubber per boxSizes Price $1250 per box ppd USA flL KA WAKEFIELErgIsh $3888 pIe UPSBeilding Finished Front Endii end Flying InstruCtion Very Conplete Send SOC 1984/1 985 Oatalog F Al Model Supply It~S7ToeCAf051R 3, 32 1' 1' 3 4 Fine Quality Flying Models Catalog S 150 98 RUBBER POWER KITS plus Gliders C/L R/C Accessories Books 4 4 4 4 4 4 4 4 4 MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 August1984 141 Want REV-VP Props P 4uichie SOD Pattern & Sport 4 carter Midget Nuge Inventory ! New About Custom Tuned Engines P Detailed Drochure Sead 75 TO Kustoin Kuftsmanship RI lox 209 Ique Nuts CR 92654 Ph 714 5305162
Edition: Model Aviation - 1984/08
Page Numbers: 36, 37, 140, 141
Radio Technique George M Myers BUILD ME Ill bet worst RFI radio-frequency interference comes source consider least Let ters Ive received conversations Ive other modelers lead sug gest devastating interference comes transmitters left turned ON should turned OFF true what impound operator really needs simple reliable tool discovering such oversights Enter John Lange AMAs DFC District Frequency Coordinator -at-large bearing RE Wand copy has donated AMA along permission publish following description structions Its value use demon strated LSF tournament FAI Sailplane trials summer 1983 John used catch few mistakes show man crying interference actually suffer ing effects own loose transmitter antenna John man shake transmitter both could hear signal cutting out RE Wand can waved over impounded transmitters AM FM PCM something left BR RRR sound comes wand No tuning needed no sound comes RE Wand unless transmitter operating vicinity Checking trans mitters impound area becomes simple bit like airport frisk opera tion Overall sensitivity such trans mitters flight line wont heard heard simply collapse RE Wand antenna little until dont hear As practical matter can RE Wand activities its tenna completely collapsed reserving extended antenna special cases What can ask Oh want cheap does under $20 strike Any person knows end soldering iron grab should able build less hour Johns instructions Materials RF Wand Buy following local Radio Shack store Part NoQty 277-1008A1 15-2321 Name Mini Amplifier-Speaker case 38 Replacement TV Antenna 276-1123 1N34A Diodes 272-126 001 mF Ceramk Disk Capacitors 2 2 Construction Open amplifier case snaps together remove amplifier board unsoldering speaker leads unscrewing knurled ring nuts input output jacks mounting screw board Remove input jack the middle board using soldering iron solder wick Remove solder lug antenna solder 001 disk capacitor see sketch Install two diodes 001 disk capacitor amplifier board shown sketch Mount antenna retapping its base Binder Head No 8 screw A-in 36 Model Aviation George ran young man Toleaowflo sent tnis message aii ot us Hanno rrett ncr demonstrably worids top Pattern filer Toledo show demon strate radios now being Imported Altech Marketing John Lange AMAs District Frequency Coordlnator-at-large sits booth Toledo show offering parts various fraquencylchannei monitor converters George has mentioned previous coiumns Listen RC channels car radio long assembling solder lug No 8 x % diameter washer spread load plastic case antenna middle hole case used serve input jack Reinstall amplifier reattach speaker leads connect disk capacitor antenna junction diodes install 9-volt battery try out doesnt work try different diodes put bands op posite way have Theory operation RF Wand con sists audio amplifier connected antenna way broad-band peak-topeak RF detector across input antenna captures RF energy detector strips off audio modulation am plifier presents detected modulation loudspeaker can hear Conventional AM RC transmitters will produce BRRRR sound changes sticks moved Two-channel RC transmitters will produce low growl four- through eight-channel trans mitters will produce faster growls FM RC transmitters will produce same sort sounds signal will seem weaker tip RF Wand will have held closer operating transmitter order produce sound PCM RC transmitters produce mushy whine turn up volume no RC transmitters operating vicinity may hear strong local com mercial radio stations Youll learn sounds first time use sensitivity Wand such wont hear transmitters working flight line 30 feet away hear simply collapse RF Wand tenna till dont can find trans mitters operating inside automobile holding RF Wand antenna near car window As mentioned earlier wand can discover damaged transmitter antennas Remember turn off RF Wand August 1 984 37 can construct RF Wand transmitter-monitor sketch Practically work has done you buy Radio Shack mini amplifier-speaker Continued page 140 Two vital tools todays RC club flying site frequency monitor RF Wand transmitterllmpound monitor frequen cy monitor Georges old Alrtronics unitwhich looks like latest newchannel uses plug-in crystais Theres no need panic impending appearance new SRF switchable radio frequency radios Keep cool John Slmones new Eagle Helicopter runs counter trend todays chopper kits toward bigger realistic Scale scalelike Helicopters stub wings heip John whole new world aerobatics should interesting Now Kit Form ElflBrown Continued page 137 quickly apply solder should melt flat puddle around joint solder forms little ball base metal material either 1 hot enough 2 clean enough 3 fluxed Practice piece scrap brass first will pick up knack quickly After solder job complete chip away encrusted flux rinse thoroughly water Du-Bro muffler strap workswell attaching muffler engine havent convinced try build ing own muffler Du-Bro Muff-l Aire II should work well little modification cowling Flying First few words about upside down engines Inverted engines harder start upright ones providing flip model belly-up start easiest way cradle Robart makes $11995 wIth large lInear servos $12995 wIth small rotary servos Seed SS fer complete cetmlog 509 487-2122 nice Styrofoam can build few pine boards short time youre careful prim ing can get inverted engine start regularly turning model upside down Just careful using electric starter engine does get hydraulic lock too much fuel prime resulting bent rod topic running inverted engines experience have never found inboard batteries necessary desirable keep glow plug lit idle Provided carburetor adjust ed correctly fuel tank placed properly engine will idle just well inverted upright minus side onboard plug lighter just adds weight potential fire hazard should something chort-circuit After youve adjusted engine idle made sure surface throws set correctly its time first flight takeoff prepared correct heading little right rudder Give full throttle short distance will lift off little up-elevator Once air climb safe altitude acquaint yourself its handling char acteristics Since theres lot wing area move about youll notice reacts very gently aileron control Co ordination rudder neces sary because aileron differential will snap things up quite bit landing dont afraid slow down Elf ready again use little rudder pull tail down touch up-elevator once begins slow ground enjoy Old-Timers cabin 6planes try Elf may never sweep SAM Championships like Old-Timers its loads fun fly Radio TechniquelMyers Continued page 37 youre using doesnt make sound unless transmitter operating Yicinity could put LED light-emitting diode pilot light would use battery cur rent wand does OK gang make up use Let John Lange know much appre ciate generosity writing him 1700 N 37th Ave Stone Park IL 60165 Toledo year met talked John Blue Thunder Simone photod Eagle Helicopter soon production wings enhance maneuverability John ex pects able perform whole new series aerobatics cant wait see time Helicopter wins aPat tern event Wholl first Several elaborate expeasive new RC sys tems shown Toledo Altech Simprop represented Hanno Ptett ner Miniature Aircraft Supply Co Multiplex being imported Walt Schoonard Futabas PM digi tal pulse-code modulation system So far Ive handled done testing Futaba PCM showed outstanding performance spite fact receiver single140 Model Aviation Save easy assemble 4 channel kit expandable 71 OnIy$ 7995 service parts available past manufactured EK Logitrol radios including Logitrol manufactured Cirrus Tower Hobby Lobby radios Y Free servo reversing Hobby Lobby radios included service work FCS-4 Four Channel Radio Wider body ends aching shoulder muscles Angled fdr easier monitering battery charge Designed easily accept new frequencies Servo reversing simply reversing plug Adjustable stick tension Inexpensive replacement servos 45OmAH battery pock I600mAH ft 1200mAH extral Expandable Full Command Systems 908 E Rosewood Spokane WA 99208 [HOT WIRE FOAM CUTlER ATTENTION ORATCH UVILIERS cutting foam wings ats turtle decks ny model parts n made foam ts over 7 foot wing span Operotes 12 alt motor cycle battery tith instructions 9 dealer order drect MtestainAe4Di Hawk PO lox 221 Mt Morris 1148458 AC K VTACH/PULSE C MOS Technology 4 Digit TaoS 150 40000 RPM 000 RPM Optroat Pick-Up 4 Digit Pulemeter Alumicum Case Hold Drsplay Scoitch Tooc NI-Cd Battehes Cng Poise Cables 10010454 Tachonreta uses 441011 LEDI RPM Xt0 Only last digit dropped Special tiller easier read soetight POLO soAtoh holds display RPM no need bend goes prop read Batteries 040rnai4NtCdl does use receloen batteries power ton Poise teadlngs 0100k Anodized Aluminum oase rugged Poise input ole cable Inom radio rsueioec servooc puts Also leclodes solden solder lice end shrink lit br Caching mating cosneotors charger poise cables better product modeler ,eersre LNA H8N ELEcTRONIcS55scseuest h4Iosrrrcereounr 01cc55100 jjkjce.rcenrocnoae,oenult ftEse,te sen a- @*. 24 insignia sheets also letters numbers 0 major decals available popular 40 -60sizes plus American Giant Scale size believe major decals have comprehensive assortment available now -with sizes styles coming time pressure sensitive water transfer Well bet line handing line.the complete line decals available model anywhere _OCAG youll love being handed major decals Ostributors nquiries invited TEL 413-525-4110 CONTACT YOUR LOCAL HOBBY SHOP OR WRITE OIREcT NORTHEAST SCREEN GRAPHICS 21 FISHER AVE. EAST LONOMEADOW MA 01020 conversion superhetrodyne affair PCM receiver rejects forms inter ference including direct on-channel transmissions some cases radio tested loaned Bob Aberle before moved Bob Hunt editor Flying Models will no doubt campaigning Pattern events throughout 1984 Bob Aberle get hands others well tell about big subject discussion Toledo Kraft switchable radio frequency SRF RC system MoM people lis tened Jack Albrechts explanation way worked favorably im pressed Some havent seen radio yet havent heard dis cussion calling ban Really guys thats no way business Ban ning system wont solve problem think someone might carelessly shoot down two forthright solutions 1 TrainingTeach newcomer about realities interference teach yourself use what have intel ligently 2 ImpoundingYou really should use impound area John Langes RF Wands primary concern some will shoot down deliberately have cheaper ways go about pocket full crystals Futaba Tower Airtronics transmitter name few sold plug-in crystals will cost less $50 Such being case would anyone spend over five times much job Kraft SRF plan deal problem SRF transmitters 1984 subsequent Nats following manner 1 Owners SRF transmitters wheth er way plug-in crystals modules RF boards synthesizers will asked declare themselves users channels listed AMA Phase-In Plan funny-colored flags 2 The Transmitter Processors will verify operation stated channel within applicable technical specifications correct antenna frequency channel flag mounted 3 The transmitters will sealed duration contest prevent advertent changes resultant poten tial mistakes 4 Impound areas monitors RF Wands will used flight line 5 Some Contest Directors may wish take advantage SRF capabilities resolve conflicts equalize popula tions available RC channels hav ing set-owners switch channels No prob lem takes another pass through transmitter processing line should likewise will productive ban will cost manpower keep trans mitter processing station could simple Airtronics Scanner veri fy transmitter same channel its flag open throughout contest George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 S2B2IUtasi Continued page 41 sure use Loctite threads pre vent backing out pop rivets really much safer 52B2 should wrapped foam RIDDIZ I 042l Ff\j UDLL E 1mm thick Boxed 16 oz rubber per boxSizes Price $1250 per box ppd USA flL KA WAKEFIELErgIsh $3888 pIe UPSBeilding Finished Front Endii end Flying InstruCtion Very Conplete Send SOC 1984/1 985 Oatalog F Al Model Supply It~S7ToeCAf051R 3, 32 1' 1' 3 4 Fine Quality Flying Models Catalog S 150 98 RUBBER POWER KITS plus Gliders C/L R/C Accessories Books 4 4 4 4 4 4 4 4 4 MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 August1984 141 Want REV-VP Props P 4uichie SOD Pattern & Sport 4 carter Midget Nuge Inventory ! New About Custom Tuned Engines P Detailed Drochure Sead 75 TO Kustoin Kuftsmanship RI lox 209 Ique Nuts CR 92654 Ph 714 5305162
Edition: Model Aviation - 1984/08
Page Numbers: 36, 37, 140, 141
Radio Technique George M Myers BUILD ME Ill bet worst RFI radio-frequency interference comes source consider least Let ters Ive received conversations Ive other modelers lead sug gest devastating interference comes transmitters left turned ON should turned OFF true what impound operator really needs simple reliable tool discovering such oversights Enter John Lange AMAs DFC District Frequency Coordinator -at-large bearing RE Wand copy has donated AMA along permission publish following description structions Its value use demon strated LSF tournament FAI Sailplane trials summer 1983 John used catch few mistakes show man crying interference actually suffer ing effects own loose transmitter antenna John man shake transmitter both could hear signal cutting out RE Wand can waved over impounded transmitters AM FM PCM something left BR RRR sound comes wand No tuning needed no sound comes RE Wand unless transmitter operating vicinity Checking trans mitters impound area becomes simple bit like airport frisk opera tion Overall sensitivity such trans mitters flight line wont heard heard simply collapse RE Wand antenna little until dont hear As practical matter can RE Wand activities its tenna completely collapsed reserving extended antenna special cases What can ask Oh want cheap does under $20 strike Any person knows end soldering iron grab should able build less hour Johns instructions Materials RF Wand Buy following local Radio Shack store Part NoQty 277-1008A1 15-2321 Name Mini Amplifier-Speaker case 38 Replacement TV Antenna 276-1123 1N34A Diodes 272-126 001 mF Ceramk Disk Capacitors 2 2 Construction Open amplifier case snaps together remove amplifier board unsoldering speaker leads unscrewing knurled ring nuts input output jacks mounting screw board Remove input jack the middle board using soldering iron solder wick Remove solder lug antenna solder 001 disk capacitor see sketch Install two diodes 001 disk capacitor amplifier board shown sketch Mount antenna retapping its base Binder Head No 8 screw A-in 36 Model Aviation George ran young man Toleaowflo sent tnis message aii ot us Hanno rrett ncr demonstrably worids top Pattern filer Toledo show demon strate radios now being Imported Altech Marketing John Lange AMAs District Frequency Coordlnator-at-large sits booth Toledo show offering parts various fraquencylchannei monitor converters George has mentioned previous coiumns Listen RC channels car radio long assembling solder lug No 8 x % diameter washer spread load plastic case antenna middle hole case used serve input jack Reinstall amplifier reattach speaker leads connect disk capacitor antenna junction diodes install 9-volt battery try out doesnt work try different diodes put bands op posite way have Theory operation RF Wand con sists audio amplifier connected antenna way broad-band peak-topeak RF detector across input antenna captures RF energy detector strips off audio modulation am plifier presents detected modulation loudspeaker can hear Conventional AM RC transmitters will produce BRRRR sound changes sticks moved Two-channel RC transmitters will produce low growl four- through eight-channel trans mitters will produce faster growls FM RC transmitters will produce same sort sounds signal will seem weaker tip RF Wand will have held closer operating transmitter order produce sound PCM RC transmitters produce mushy whine turn up volume no RC transmitters operating vicinity may hear strong local com mercial radio stations Youll learn sounds first time use sensitivity Wand such wont hear transmitters working flight line 30 feet away hear simply collapse RF Wand tenna till dont can find trans mitters operating inside automobile holding RF Wand antenna near car window As mentioned earlier wand can discover damaged transmitter antennas Remember turn off RF Wand August 1 984 37 can construct RF Wand transmitter-monitor sketch Practically work has done you buy Radio Shack mini amplifier-speaker Continued page 140 Two vital tools todays RC club flying site frequency monitor RF Wand transmitterllmpound monitor frequen cy monitor Georges old Alrtronics unitwhich looks like latest newchannel uses plug-in crystais Theres no need panic impending appearance new SRF switchable radio frequency radios Keep cool John Slmones new Eagle Helicopter runs counter trend todays chopper kits toward bigger realistic Scale scalelike Helicopters stub wings heip John whole new world aerobatics should interesting Now Kit Form ElflBrown Continued page 137 quickly apply solder should melt flat puddle around joint solder forms little ball base metal material either 1 hot enough 2 clean enough 3 fluxed Practice piece scrap brass first will pick up knack quickly After solder job complete chip away encrusted flux rinse thoroughly water Du-Bro muffler strap workswell attaching muffler engine havent convinced try build ing own muffler Du-Bro Muff-l Aire II should work well little modification cowling Flying First few words about upside down engines Inverted engines harder start upright ones providing flip model belly-up start easiest way cradle Robart makes $11995 wIth large lInear servos $12995 wIth small rotary servos Seed SS fer complete cetmlog 509 487-2122 nice Styrofoam can build few pine boards short time youre careful prim ing can get inverted engine start regularly turning model upside down Just careful using electric starter engine does get hydraulic lock too much fuel prime resulting bent rod topic running inverted engines experience have never found inboard batteries necessary desirable keep glow plug lit idle Provided carburetor adjust ed correctly fuel tank placed properly engine will idle just well inverted upright minus side onboard plug lighter just adds weight potential fire hazard should something chort-circuit After youve adjusted engine idle made sure surface throws set correctly its time first flight takeoff prepared correct heading little right rudder Give full throttle short distance will lift off little up-elevator Once air climb safe altitude acquaint yourself its handling char acteristics Since theres lot wing area move about youll notice reacts very gently aileron control Co ordination rudder neces sary because aileron differential will snap things up quite bit landing dont afraid slow down Elf ready again use little rudder pull tail down touch up-elevator once begins slow ground enjoy Old-Timers cabin 6planes try Elf may never sweep SAM Championships like Old-Timers its loads fun fly Radio TechniquelMyers Continued page 37 youre using doesnt make sound unless transmitter operating Yicinity could put LED light-emitting diode pilot light would use battery cur rent wand does OK gang make up use Let John Lange know much appre ciate generosity writing him 1700 N 37th Ave Stone Park IL 60165 Toledo year met talked John Blue Thunder Simone photod Eagle Helicopter soon production wings enhance maneuverability John ex pects able perform whole new series aerobatics cant wait see time Helicopter wins aPat tern event Wholl first Several elaborate expeasive new RC sys tems shown Toledo Altech Simprop represented Hanno Ptett ner Miniature Aircraft Supply Co Multiplex being imported Walt Schoonard Futabas PM digi tal pulse-code modulation system So far Ive handled done testing Futaba PCM showed outstanding performance spite fact receiver single140 Model Aviation Save easy assemble 4 channel kit expandable 71 OnIy$ 7995 service parts available past manufactured EK Logitrol radios including Logitrol manufactured Cirrus Tower Hobby Lobby radios Y Free servo reversing Hobby Lobby radios included service work FCS-4 Four Channel Radio Wider body ends aching shoulder muscles Angled fdr easier monitering battery charge Designed easily accept new frequencies Servo reversing simply reversing plug Adjustable stick tension Inexpensive replacement servos 45OmAH battery pock I600mAH ft 1200mAH extral Expandable Full Command Systems 908 E Rosewood Spokane WA 99208 [HOT WIRE FOAM CUTlER ATTENTION ORATCH UVILIERS cutting foam wings ats turtle decks ny model parts n made foam ts over 7 foot wing span Operotes 12 alt motor cycle battery tith instructions 9 dealer order drect MtestainAe4Di Hawk PO lox 221 Mt Morris 1148458 AC K VTACH/PULSE C MOS Technology 4 Digit TaoS 150 40000 RPM 000 RPM Optroat Pick-Up 4 Digit Pulemeter Alumicum Case Hold Drsplay Scoitch Tooc NI-Cd Battehes Cng Poise Cables 10010454 Tachonreta uses 441011 LEDI RPM Xt0 Only last digit dropped Special tiller easier read soetight POLO soAtoh holds display RPM no need bend goes prop read Batteries 040rnai4NtCdl does use receloen batteries power ton Poise teadlngs 0100k Anodized Aluminum oase rugged Poise input ole cable Inom radio rsueioec servooc puts Also leclodes solden solder lice end shrink lit br Caching mating cosneotors charger poise cables better product modeler ,eersre LNA H8N ELEcTRONIcS55scseuest h4Iosrrrcereounr 01cc55100 jjkjce.rcenrocnoae,oenult ftEse,te sen a- @*. 24 insignia sheets also letters numbers 0 major decals available popular 40 -60sizes plus American Giant Scale size believe major decals have comprehensive assortment available now -with sizes styles coming time pressure sensitive water transfer Well bet line handing line.the complete line decals available model anywhere _OCAG youll love being handed major decals Ostributors nquiries invited TEL 413-525-4110 CONTACT YOUR LOCAL HOBBY SHOP OR WRITE OIREcT NORTHEAST SCREEN GRAPHICS 21 FISHER AVE. EAST LONOMEADOW MA 01020 conversion superhetrodyne affair PCM receiver rejects forms inter ference including direct on-channel transmissions some cases radio tested loaned Bob Aberle before moved Bob Hunt editor Flying Models will no doubt campaigning Pattern events throughout 1984 Bob Aberle get hands others well tell about big subject discussion Toledo Kraft switchable radio frequency SRF RC system MoM people lis tened Jack Albrechts explanation way worked favorably im pressed Some havent seen radio yet havent heard dis cussion calling ban Really guys thats no way business Ban ning system wont solve problem think someone might carelessly shoot down two forthright solutions 1 TrainingTeach newcomer about realities interference teach yourself use what have intel ligently 2 ImpoundingYou really should use impound area John Langes RF Wands primary concern some will shoot down deliberately have cheaper ways go about pocket full crystals Futaba Tower Airtronics transmitter name few sold plug-in crystals will cost less $50 Such being case would anyone spend over five times much job Kraft SRF plan deal problem SRF transmitters 1984 subsequent Nats following manner 1 Owners SRF transmitters wheth er way plug-in crystals modules RF boards synthesizers will asked declare themselves users channels listed AMA Phase-In Plan funny-colored flags 2 The Transmitter Processors will verify operation stated channel within applicable technical specifications correct antenna frequency channel flag mounted 3 The transmitters will sealed duration contest prevent advertent changes resultant poten tial mistakes 4 Impound areas monitors RF Wands will used flight line 5 Some Contest Directors may wish take advantage SRF capabilities resolve conflicts equalize popula tions available RC channels hav ing set-owners switch channels No prob lem takes another pass through transmitter processing line should likewise will productive ban will cost manpower keep trans mitter processing station could simple Airtronics Scanner veri fy transmitter same channel its flag open throughout contest George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 S2B2IUtasi Continued page 41 sure use Loctite threads pre vent backing out pop rivets really much safer 52B2 should wrapped foam RIDDIZ I 042l Ff\j UDLL E 1mm thick Boxed 16 oz rubber per boxSizes Price $1250 per box ppd USA flL KA WAKEFIELErgIsh $3888 pIe UPSBeilding Finished Front Endii end Flying InstruCtion Very Conplete Send SOC 1984/1 985 Oatalog F Al Model Supply It~S7ToeCAf051R 3, 32 1' 1' 3 4 Fine Quality Flying Models Catalog S 150 98 RUBBER POWER KITS plus Gliders C/L R/C Accessories Books 4 4 4 4 4 4 4 4 4 MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 August1984 141 Want REV-VP Props P 4uichie SOD Pattern & Sport 4 carter Midget Nuge Inventory ! New About Custom Tuned Engines P Detailed Drochure Sead 75 TO Kustoin Kuftsmanship RI lox 209 Ique Nuts CR 92654 Ph 714 5305162