~~George M Myers-— MORE ON MICRO RC comment RC insects July issue has pro duced surprising amount mail Ive included photo two letters interested might write fellows first letter Harry Apoian Apoians Model Aerodynamics 27704 Saddle Road Rolling Hills CA 90274 Enclosed photo A4-size Pietenpol built mid-1982 result challenge posed Larry Renger master small RC models Larry supplied Albin receiver matching transmitterand dare build CO 2-powered RC model Pietenpol chosen because simple proven flier model weighs 36 ounces has wing area 102 square inches 24-in span 425-in chord giving 51 oz/sq ft wing load ing tried fly indoors didnt have suitable site Outdoors per formed beautifully flapping rudder Brown CO-2 motor 6cc tank engine ran 60 90 seconds depending pressure temperature prop etc course fly dead-calm alr would few figure eights used two 008 amp-hr Nicads trademark ade quate Albin stripped down bare minimum used lO-mil copper wire antenna Larry tried make actuator save some weight unsuccessful flew well anyway~ next letter included schematic report further development Albin superregerative receiver Fritz Mueller 4117 Searcy St Columbus GA 31907 Thanks publishing Dr FH Meyers letter comment coincides rising interest small primitive RC will get touch give him few pointers toward RC CO-2 Peanuts Stefan Gasparin Czechoslovakian engineer has doing some time ac cording him fun fly larger planes having wingspans 18 inches Stefans servo weighs 1 gram Micro Albin receiver 3 gr two alka line cells 5 gr Stefans receiver detects RF signals effect mentioned textbooks have seen yet respects similar superior superheterodyne receivers. .. Should turn drop line letter contalns circuit diagram description superregenerative receiver Superregens arent used much now because essentially connect RF oscillator antenna thereby becoming transmitter Except ex tremely low-powered oscillators radiate too much energy fore illegal Besides superregen would create chaos middle new RC channels Used single CO-2 airplane 27 MHz RC channel power levels expected setup proba bly no would complain about dont think can expect work well groups next letter echoes theme see three four letters per year constantly almost answers itself sent Jack Sonnenborn President Lan caster County RC Club Inc AMA Char ter No 556 Boy have wild crazy ques tion tax mind today club currently flying beautiful farmland Lancaster County neighbors Amish farmers Over past few weeks various planes have crashed due what pilots call interference Person ally dont think whole answer crashes have occurred various levels fliers assorted fre quencies both AM FM radios Most fellows using Kraft Futaba Tower Airtronics radios thing can think lot electric fences area help would appreciated Should purchase monitor nega tive events have happened airplane air person flying site Twice hap pened transmit ter field Electric fences notorious sources RF interference need track down fences causing trouble portable AM FM radio Tune tween radio stations quiet spot walk around radio listen static buzz hum whatever Some times can find bad fence post posts whacking rawhide mallet Once found ask farmer turn fence off improve insulation its wooden post may need move wire inch up down its metal may need pocket full new insulators Often farmers family will thank because radio TV reception will improve farmers work never done will usually accept free fence-mending can get need good will After whos land usingand flying over Jack Schultz Ham friend tells same problem plagues Hams affected power lines 36 Model Aviation Tiny RC Harry Apolans %4slze Pletenpol CO2powered weighs mere 36 OL spans 24 cracked insulators etc Hams can sometimes seen late night whacking lighting poles attempt locate interference sources Before anyone asks Yes illegal under FCC regulations fence powerline motorcycle etc radiate whatever takes interfere radio reception summer will over maybe few besides before get anything settled insisting farmer compliance regulation Another reader writes . 1 sent RC system back manufacturer twice tried flying field 20 miles place first interference hap penedand still problems occur receiver supposed receive signals radio transmitters other chan nels sDavid Bryant Coram NY Simple answer No isnt Real World answer Most given wrong conditions some 1 Standing transmitters too close together keep 30 feet apart 2 Letting airplane get closer other guys transmitter yours talking about 1 o difference Y0th distance trou ble can expected 3 Occasionallybut oftenwe see bad transmitter receiver days bad receivers FM types Back June 1985 issue review ing Altech Marketings Simprop PCM-20 went about having dual-con version narrow-band receiver wrong has exactly Sorry about misleading still believe Sim prop plug-in module customizes transmitter particular airplane helicopter boat etc good way deal fact type modd re quires its own peculiar mixing features control-throw settings trims etc Simprop can get right unplug module store model want fly model plug matching module ready Eventually someone will come out transmitter EEPROM can downloaded tape recorder offline computer Until its either Simprop PCM-20 multiple transmitters long letter following telephone call Dave Peltz AMA 968 member AMA RC Soaring Contest Board talked things Dave s main message should have emphasized FCC Type Ac cepted transmitters should allowed AMA Soaring contests burden proof Type Acceptance modeler AMA soaring contests burden proof Type Acceptance modeler Dave upset because AMA repre sented international aeromodeling activities accordance AMA Bylaws its president John C Grigg did disqualify contestants used illegal Becker RC systems 1984 F3B RC Soaring team selection Finals Thereby Dave says secured unfair advantage over other competi tors way special control-mixing functions built Becker trans mitter As Dave puts Federal regula tions ignored order gain place RC Soaring team representing United States World competition Editors note Because situation described plus other purported irregulari ties Finals AMA president declared team finals null void naming three US team members presidential directivethis explained considerably greater detail Presidents Corner column July 1985 issue AMA News George Myers went point out AMAsanctioned competition paragraph 117 AMA rule book asserts abusing kind regulation sup posed lead contestants disquali fication course basic question whether thisor AMA competition rules applicable event operated FAI rules select members team repre senting US FAI World Championships RMcM other hand want experiment special controls way go about breaking federal law first get yourself Ham license can build anything rules allow gives advan tage mind should use anything helps fly better have no blame yourself fail get beat arent ambitious enough work advantage seek get ting Ham license developing equipment case really dont deserve have Now Ill tell what told Dave above very important what world really wants Type Accepted RC system trustworthy AMA represented Frequency Committee working define parameters FCCs Type Acceptance procedure will secure just October 1985 37 George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Gargantuan RC Scale real-life Culver P0-i 4B target drone WW II era atthe Air Force Museum 2048 built spans 30 ft 19-ft long flies 185 mph used anti-aircraft gunnery practice one-man crew flew wasnt being fired Thanks Larry Olsen Clifton Park NY photo
Edition: Model Aviation - 1985/10
Page Numbers: 36, 37
~~George M Myers-— MORE ON MICRO RC comment RC insects July issue has pro duced surprising amount mail Ive included photo two letters interested might write fellows first letter Harry Apoian Apoians Model Aerodynamics 27704 Saddle Road Rolling Hills CA 90274 Enclosed photo A4-size Pietenpol built mid-1982 result challenge posed Larry Renger master small RC models Larry supplied Albin receiver matching transmitterand dare build CO 2-powered RC model Pietenpol chosen because simple proven flier model weighs 36 ounces has wing area 102 square inches 24-in span 425-in chord giving 51 oz/sq ft wing load ing tried fly indoors didnt have suitable site Outdoors per formed beautifully flapping rudder Brown CO-2 motor 6cc tank engine ran 60 90 seconds depending pressure temperature prop etc course fly dead-calm alr would few figure eights used two 008 amp-hr Nicads trademark ade quate Albin stripped down bare minimum used lO-mil copper wire antenna Larry tried make actuator save some weight unsuccessful flew well anyway~ next letter included schematic report further development Albin superregerative receiver Fritz Mueller 4117 Searcy St Columbus GA 31907 Thanks publishing Dr FH Meyers letter comment coincides rising interest small primitive RC will get touch give him few pointers toward RC CO-2 Peanuts Stefan Gasparin Czechoslovakian engineer has doing some time ac cording him fun fly larger planes having wingspans 18 inches Stefans servo weighs 1 gram Micro Albin receiver 3 gr two alka line cells 5 gr Stefans receiver detects RF signals effect mentioned textbooks have seen yet respects similar superior superheterodyne receivers. .. Should turn drop line letter contalns circuit diagram description superregenerative receiver Superregens arent used much now because essentially connect RF oscillator antenna thereby becoming transmitter Except ex tremely low-powered oscillators radiate too much energy fore illegal Besides superregen would create chaos middle new RC channels Used single CO-2 airplane 27 MHz RC channel power levels expected setup proba bly no would complain about dont think can expect work well groups next letter echoes theme see three four letters per year constantly almost answers itself sent Jack Sonnenborn President Lan caster County RC Club Inc AMA Char ter No 556 Boy have wild crazy ques tion tax mind today club currently flying beautiful farmland Lancaster County neighbors Amish farmers Over past few weeks various planes have crashed due what pilots call interference Person ally dont think whole answer crashes have occurred various levels fliers assorted fre quencies both AM FM radios Most fellows using Kraft Futaba Tower Airtronics radios thing can think lot electric fences area help would appreciated Should purchase monitor nega tive events have happened airplane air person flying site Twice hap pened transmit ter field Electric fences notorious sources RF interference need track down fences causing trouble portable AM FM radio Tune tween radio stations quiet spot walk around radio listen static buzz hum whatever Some times can find bad fence post posts whacking rawhide mallet Once found ask farmer turn fence off improve insulation its wooden post may need move wire inch up down its metal may need pocket full new insulators Often farmers family will thank because radio TV reception will improve farmers work never done will usually accept free fence-mending can get need good will After whos land usingand flying over Jack Schultz Ham friend tells same problem plagues Hams affected power lines 36 Model Aviation Tiny RC Harry Apolans %4slze Pletenpol CO2powered weighs mere 36 OL spans 24 cracked insulators etc Hams can sometimes seen late night whacking lighting poles attempt locate interference sources Before anyone asks Yes illegal under FCC regulations fence powerline motorcycle etc radiate whatever takes interfere radio reception summer will over maybe few besides before get anything settled insisting farmer compliance regulation Another reader writes . 1 sent RC system back manufacturer twice tried flying field 20 miles place first interference hap penedand still problems occur receiver supposed receive signals radio transmitters other chan nels sDavid Bryant Coram NY Simple answer No isnt Real World answer Most given wrong conditions some 1 Standing transmitters too close together keep 30 feet apart 2 Letting airplane get closer other guys transmitter yours talking about 1 o difference Y0th distance trou ble can expected 3 Occasionallybut oftenwe see bad transmitter receiver days bad receivers FM types Back June 1985 issue review ing Altech Marketings Simprop PCM-20 went about having dual-con version narrow-band receiver wrong has exactly Sorry about misleading still believe Sim prop plug-in module customizes transmitter particular airplane helicopter boat etc good way deal fact type modd re quires its own peculiar mixing features control-throw settings trims etc Simprop can get right unplug module store model want fly model plug matching module ready Eventually someone will come out transmitter EEPROM can downloaded tape recorder offline computer Until its either Simprop PCM-20 multiple transmitters long letter following telephone call Dave Peltz AMA 968 member AMA RC Soaring Contest Board talked things Dave s main message should have emphasized FCC Type Ac cepted transmitters should allowed AMA Soaring contests burden proof Type Acceptance modeler AMA soaring contests burden proof Type Acceptance modeler Dave upset because AMA repre sented international aeromodeling activities accordance AMA Bylaws its president John C Grigg did disqualify contestants used illegal Becker RC systems 1984 F3B RC Soaring team selection Finals Thereby Dave says secured unfair advantage over other competi tors way special control-mixing functions built Becker trans mitter As Dave puts Federal regula tions ignored order gain place RC Soaring team representing United States World competition Editors note Because situation described plus other purported irregulari ties Finals AMA president declared team finals null void naming three US team members presidential directivethis explained considerably greater detail Presidents Corner column July 1985 issue AMA News George Myers went point out AMAsanctioned competition paragraph 117 AMA rule book asserts abusing kind regulation sup posed lead contestants disquali fication course basic question whether thisor AMA competition rules applicable event operated FAI rules select members team repre senting US FAI World Championships RMcM other hand want experiment special controls way go about breaking federal law first get yourself Ham license can build anything rules allow gives advan tage mind should use anything helps fly better have no blame yourself fail get beat arent ambitious enough work advantage seek get ting Ham license developing equipment case really dont deserve have Now Ill tell what told Dave above very important what world really wants Type Accepted RC system trustworthy AMA represented Frequency Committee working define parameters FCCs Type Acceptance procedure will secure just October 1985 37 George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Gargantuan RC Scale real-life Culver P0-i 4B target drone WW II era atthe Air Force Museum 2048 built spans 30 ft 19-ft long flies 185 mph used anti-aircraft gunnery practice one-man crew flew wasnt being fired Thanks Larry Olsen Clifton Park NY photo