George MMyers NEW TOOL Jack Albrecht formerly Sales Manager Kraft figured out modify Kraft SRF module synthesizer puts out AM instead FM got Vein Mensimer Hayes Products San Marcos CA telephone 619/744-8546 modified case hadnt heard Hayes company bought Kraft liquidating inventory no servos Thank Jack gives first-class tool testing RC systems especially since buddy Bob Aberle also has first move check its output oscilloscope looked like highquality 100% modulation narrow-band AM output nominal 400 mW Next checked channels worked found output RC 11 thru RC6O except RC4O expected synthesizer no output RC0O thru RC1O RC61 thru RC99 also should synthesizer though RF meter front panel Kraft MK IV Helicopter transmitter showed about 95 units RF across range RCOO thru RC99 well-known Kraft panel meter measures current synthesizer instead RF energy out theres no harm checking took group AM receivers off shelf tried control module didnt retune match module ground range resuls obtained antenna section extended about six inches outside transmitter case 1976 Futaba Contest 7 dual-conversion AM 72080 MHz RC 12 RC 13 RC 14 RC1 S RC 16 RC 17 no response no response servo jitters no control about foot 135 feet good control 72090 MHz servo jitters no response 1976 Cox/Sanwa 8016 single-conversion AM 72240 MHz RC21 RC22 RC23 RC24 RC25 no response four feet 200 feet good control 72250 MHz no response no response 1980 Novak single-conversion AM 72240 MHz RC2O RC21 RC22 RC23 MHz RC24 foot 1980 Ace R/C Silver Seven single-conversion AM RC5472870 MHz RC52 RC53 RC54 RC55 no response four feet jittery 64 feet good control 24 feet foot very fussy six feet 57 feet 7 2230 MHz 107 feet good control 72250 RC56 three feet jittery let reiterate receivers retuned match SRF transmitter done am sure ground ranges would improve also might adjacent-channel rejection properly-tuned receiver usually gives ground range about 180 feet situation Kraft Mk IV transmitter section extended antennas parallel receiver antenna lying ground maln point SRF AM transmitter able show approximately normal control over receivers long transmitter frequency within 10 kHz 40 Model Aviation Georges new AM synthesizer some old receivers tested commented month device gives him very handy tooi speed up fieid tests performs during unch-hour sessions place work hed rather flying Georges stIcK-wIggIer ets nim 00 fieid tests helper White object isa servo travel stops cut out eiectronics repiaced direct battery connection its motor constantiy moves transmitter controi function 72 MHz MODEL AIRCRAFT USESURFACE USE ONLYCC REGULATION 75 MHz SURFACE USEMODEL AIRCRAFT USE ONLY Its works AMA has made artwork stickers availabletothe RC manu facturers labeling system cartons and/or transmitters Another round fight keep Aircraft RC channels free unwanted interference receiver s nominal frequency need better receiver performance ie narrower bandwidths response dual-conversion Futaba receiver Cox/Sanwa 8016 show narrower-band performance theothers shows what can done George P Steiner District 10 Frequency Co ordinator doing business GSP Products Sacramento CA has done careful tests hundreds RC systems has serviced Comparing measured characteristics real systems observed performances field data has showing leads conclusion receiver characteristics will required 1991 will include IF amplifier about -60 dB filtering outside 5 kHz passband same time Third Order Intercept Point least 0dB will required relative minimum input required full detected output draft copy AMAs ROC required operating characteristics distributed Toledo says about same thing lot words What happened Toledo hate sound like broken record Gold Star transmitter checkout program conducted Weak Sig nals Exposition Toledo OH once agaln showed umably sport trans mitters presented checking out toler ance Thats three threeCA NY OH have telling key future new receiver thats true have keep transmitters lined up too know have access spectrum analyzer know use know someone does tune rig now will sufficient suppress sidebands beginning 20 kHz least -50 dB -60 dB would better harmonics least -35 dB suppression will better same time check accuracy crystal should within Hz nominal value again closer better should mention half transmitter failures mentioned previously caused crystals way off frequency particularly Continued page 139 Balsa Spruce Plywood Kit Mfg match current prices now paying better quality Open Public 40-60% Discounts Sal Taibi Mike Taibi AMA CLUBS Ask about AMA Club Discounts minimum orders $10000 12020 Centralia Hawaiian Gardens CA 90716 213 865-3220 J C Trainers 60 Size40 Size20 Size See local dealer call us special prices DISTRIBUTED BY FLYS GREAT IDEAL BEGINNERS AIRPLANE THAT BUILDS IN HALF THE TIME Jig built balsa fuselage 90% Built wing Excellent instructions first time builder Full size plans Decal forms windshield JOHNNIE CASBURN MANUFACTURING CO 5715-SE E Rosedale Fort Worth TX 76112 Day 817/451-7537 t 817/572-1452 IFUUD W5558 7550 Ser GrbreI Roed codero CA 93422 488-1717 September 198641 Mon Fri 8am -4pm PST r $795 $425$75AVAILABLE AT AMERICAS$425 FINEST HOBBY SHOPS Miss RJ/Malinas Continued page 135 smooth After thorough sanding cover fuselage once light fiberglass cloth epoxy has hardened wetsand again fine sandpaper coat favorite finishing epoxy Take good care surface finish im perfect work will affect flying perform ance Trimming racing position center gravity GO quality construction weight should exceed 2200g ie 4 lb 14 oz empty fuel tank have decisive effect flying performance Needless say model must straight have ex cellent finish Prior first flight model should balanced CG corresponds plans radio system operations must checked check should re peated engine running full revs Trim model during first flight adjust pushrods after landing Carefully move CO during course further flights find position suits best control model model naturally responsive rudder elevator movements CG moved backwards vice versa well-tested trimmed model should always slightly nose heavynever reverse main purpose test flying find optimum CO best combination rudder elevator aileron travel limits used Modela MVVS 65 ORRT engine MVVS tuned exhaust turns 200 x 150mm prop 21000 22000 revs ground Never use plastic prop Sooner later likely tear apart resulting vibration will damage destroy model engine Use turned metal spinner must run true Should disturbing vibrations occur stop flying immediately try find cause fly model again until determination made may well lead crash common causes vibration loose unbalanced prop loose engine mounting screws loose wheel landing gear leg imperfect match ing wing fuselage Vibrations represent serious threat Pylon Racing model also damage servosthe durability limited During test flying try practice serious ly mechanic Fly Pylon race course Random flying open sky has no purpose hazardous test flight should much longer competition flight Never forget about safety F3D model flying especially ex hausting pilot best effective test fly often least once week weather reasonable number takeoffs Check model carefully after flight Clean good cleaner preserve pro tective wax Radio Technique/Myers Continued page 41 old even-numbered frequencies look CoxlSanwa 8016 test results above should convince that receiver implication its matched transmitter must considerably off frequency respond soweiltoasignal 10kHz awayfromthenominal value crystal Since crystals accuracyof00l%725 Hz easilyobtain able today transmitters plug-in crystals use fixing part problem should quite easy meeting hobby industry representa tives called Toledo Frequency Committee Chairman Fred Masks discuss problem crossover users specifically car boat operators using aircraft frequencies thing revealed meeting arent ones upset misuse frequencies Several useful suggestions developed obvious major sales outlets want cooperate program educate hoped control abusers ofthe RC operating privilege Expect start seeing labels transmitters specifying what used surface-only alrcraft-only About scanners July issue has out couple weeks have swamped calls about scanners Please con tact District Frequency Coordinator borrow scanner assigned AMA district can learn lot way subject take out July 1986 issue ModelAviation turn page 36 correct George Wilsons address 82 Frazier Way Marstons Mills MA 02648 lieve two calls came because moved published address About RF modems Recently received package literature Mr GF Vargo VP Engineering EST Kennewick WA 99336 manufacturers ESTeem wireless modem Mr Vargo explains ESTeem Wireless Modem .licensed under Part 90 Subpart K FCC regulations. .the RE modem market aware Further ESTeem modem .utilizes digital phase lock loop conjunction synthesizer frequency generation frequencies start 72040 continue 72960 40 kHz steps. ESTeem brochure gleaned information receiver works 12 VDC uses dual conversion has sensitivity five micro-volts information presented reply column noted press release another magazine quoted use both odd- even-numbered RC frequencies doubted May 86 could case Mr Vargos letter continues .To insure modem users aware possible conflicts RC modeler note stating fact displayed transmitter receiver frequen cy-select charts ESTeem Operating Man ual encouraging non-usage 6 RC frequencies copy page manual included shared channels marked exactly claims Im sure know ESTeem under no obligation us .the ESTeem does use new channels assigned RC modelers Continued page 142 DIA 6 7 8 8* 9 10 10 11 11 11 * 12 13 14 15 16 3 4 28 3 3* 4 5 6 3 3&3/4 4 5 6 8 4 5 6 6* 7 4 5 6 8* 7 7* 4 5 66W 6* 78W 6EW 4 6 7 7* 7* 7&3/4 8 6EW 6 7 4W 5 5W 6 5 6 5 6 5 6 6 78 FOUR-CYCLE TAILORED HELICAL PITCH 126 6* 7 7* 8 136 7 7*8 146 7 7*8 1567 16678 PRICE $149 $179 $189 $199 $199 $209 $219 $229 $239 $239 $279 $359 $459 $659 $949 $299 $389 $489 $689 $989 PYLON RACING 75N 5*N* 8&3/46* 6&3/4 7 7* 7&3/4 97 7* 7&3/4 W Wklebiade EW EzLFo wide N $279 $289 $289 Narrow SPECIALISTS IN CUSTOM COX TEE DEE & REED ENGINES COMPLETE INVENTORY OF CUSTOM & STOCK PARTS OLD TIMER SUPPLIES CARBON FIBER COILS CONDENSERS SILK TRANSISTOR IGNITION SYSTEMS TIMERS ETC REPLICA OR WICK ENGINES NE WI! 1/2A PLAYBOY SR FOR 1/2A TEXACO RIC FF ELECTRIC OR SPORT KIT $2995 ORDER BY MAIL OR PHONE 714 830-5162 SORRY NO COD VISA & MASTERCARD WELCOME DEALER INQUIRIES INVITED ALL PRICES ARE POSTPAID ON ORDERS OVER $10 ORDERS SHIPPED FIRST CLASS MAIL WITHIN 24 HRS CALIFORNIA RESIDENTS ADD 6% TAX September 1986 139 OUR INVENTORY AVERAGES OVER 8000 PROPSIII SPECIAL PRO SERIES PITCH ESTeem frequencies interstitial RC frequencies. continues .this device approved FCC July 1985 though normal channels no intent no intent now will ever intent infringe frequencies used RC modeler Mr Vargo goes list long history AMA including posts Contest Director Past President Tn-City RC Modelers also included copy correspondence Carl Maroney Special Services Director AMA states ESTeem understand importance RC modeling individual community stand behind AMA its endeavors modeling society EST will cooperate way can mutual benefit safely sharing 1 Basic Construction Begirruers 107 Mm 4995 2 Basic Flight Training Beginners 65 Mm . 4495 3World Model Aviatton 90 Mm 5 4Oshkosh Onerniese 55 Mm 995 SAirplane Funnies 30 Mm 5 SUS Scale Masters 60 Mm 7Warhirds Action 75 Mn 95 SHedge Hoppin Vol 145 Mm 9Which WavisUp 70Mns % lOHedge Hoppin Vol 1140 Mn 5 Rental DeposIt Retail Price TapeK Rental Duration 7 Days After DeliveryK KPayment Chech 110 dansl M 0 Visa MC Card # & K K Eup Date Phone C C 0 D s Availahle hy PhoneK ShippIng 3 75 Foreign Canada Add 10of Total K K Others 15 IL Res Add 7% Tan -K- emyofAviationR&D PO Box 277 K Hazel Crest IL 60429 335-0776 George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Skyhook/Api kos Continued page 42 wing trimmed flying creas ing hinge line wing tip ball-point pen crease can easily bend up trim tabs crack ing hinge About 1/16 positive trim tab should Youre ready go flying after quick spritz spray paint test sure brand doesnt attack foam along leading edge Release latch wanted latch super-simple quick easy build foolproof think setup comes pretty close see drawing inset plan Basically latch works releasing rubberband held place puslirod using extreme throw already-installed control servos used full up elevator servo allows gliders release relatively slow speed assuming youve dropped low throttle pulled up gentle stall use imagination release latch can used release drop launch host cargotruly sky hook RC Scale/Wischers Continued page 47 FAI Giant Scale subject Giant Scale World Championship brought before ClAM meeting Paris First inclinations downplay another RC event because proliferation added contests recent past Helicopter Pylon Soaring Scale Aero batics Electric RC events World Championship status another new event wasnt greeted great enthusiasm pointed out Dennis Thumpston Scale Committee chairman position losing Scale event now diminished interest Control Line Scale Giant Scale would replace Control Line would become International Contest rather World Championship Five na tions must compete two years maintaln Championship status has possible CL recently Finding five nations Giant Scale would easy matter Transporting Giant Scale alrplanes between continents across oceans may simple Modelers will need build alrplanes disassembled transpor tation small boxes insurmountable task done design stage Basic FAT rules state specifically must some limits placed dimensions weight power Australia offered set provisional rules Paris would need some modification fit within FAT established limits expect rules resubmitted 1987 Australian proposal followed present FAI Scale rules ex cept size weight absence com plexity bonus factor Now national aero clubs convinced Giant Scale just another passing fad would appear can become recognized championship event Strong struts Strength limited flexibility requirements landing gear new Douglas Mallplane Music wire struts look naked some sort covering Bass wood strips routed table saw pro vide snug fit A2-in music wire carved sanded streamlined shape bass strips glued music wire legs using either Wilhold RC-56 Weldbond ce ment Both adhesives have proper ties seeking type application remain slightly flexible after setting up impact rough landings will cause basswood shrouds peel away glues also bond well dissimilar materials Wood will shatter before slips wire final shaping sanding wood done after adhesive sets up about day two later Adhesive trapped inside struts Continued page 151 142 Model Aviation Americas alr waves Radio Technique/Myers What can say thank Mr Vargo Continued page 139information concern avoiding RFI RC channels hope other RF modem manufacturers will show much con cern avoiding interference RC channels
Edition: Model Aviation - 1986/09
Page Numbers: 40, 41, 139, 142
Edition: Model Aviation - 1986/09
Page Numbers: 40, 41, 139, 142
George MMyers NEW TOOL Jack Albrecht formerly Sales Manager Kraft figured out modify Kraft SRF module synthesizer puts out AM instead FM got Vein Mensimer Hayes Products San Marcos CA telephone 619/744-8546 modified case hadnt heard Hayes company bought Kraft liquidating inventory no servos Thank Jack gives first-class tool testing RC systems especially since buddy Bob Aberle also has first move check its output oscilloscope looked like highquality 100% modulation narrow-band AM output nominal 400 mW Next checked channels worked found output RC 11 thru RC6O except RC4O expected synthesizer no output RC0O thru RC1O RC61 thru RC99 also should synthesizer though RF meter front panel Kraft MK IV Helicopter transmitter showed about 95 units RF across range RCOO thru RC99 well-known Kraft panel meter measures current synthesizer instead RF energy out theres no harm checking took group AM receivers off shelf tried control module didnt retune match module ground range resuls obtained antenna section extended about six inches outside transmitter case 1976 Futaba Contest 7 dual-conversion AM 72080 MHz RC 12 RC 13 RC 14 RC1 S RC 16 RC 17 no response no response servo jitters no control about foot 135 feet good control 72090 MHz servo jitters no response 1976 Cox/Sanwa 8016 single-conversion AM 72240 MHz RC21 RC22 RC23 RC24 RC25 no response four feet 200 feet good control 72250 MHz no response no response 1980 Novak single-conversion AM 72240 MHz RC2O RC21 RC22 RC23 MHz RC24 foot 1980 Ace R/C Silver Seven single-conversion AM RC5472870 MHz RC52 RC53 RC54 RC55 no response four feet jittery 64 feet good control 24 feet foot very fussy six feet 57 feet 7 2230 MHz 107 feet good control 72250 RC56 three feet jittery let reiterate receivers retuned match SRF transmitter done am sure ground ranges would improve also might adjacent-channel rejection properly-tuned receiver usually gives ground range about 180 feet situation Kraft Mk IV transmitter section extended antennas parallel receiver antenna lying ground maln point SRF AM transmitter able show approximately normal control over receivers long transmitter frequency within 10 kHz 40 Model Aviation Georges new AM synthesizer some old receivers tested commented month device gives him very handy tooi speed up fieid tests performs during unch-hour sessions place work hed rather flying Georges stIcK-wIggIer ets nim 00 fieid tests helper White object isa servo travel stops cut out eiectronics repiaced direct battery connection its motor constantiy moves transmitter controi function 72 MHz MODEL AIRCRAFT USESURFACE USE ONLYCC REGULATION 75 MHz SURFACE USEMODEL AIRCRAFT USE ONLY Its works AMA has made artwork stickers availabletothe RC manu facturers labeling system cartons and/or transmitters Another round fight keep Aircraft RC channels free unwanted interference receiver s nominal frequency need better receiver performance ie narrower bandwidths response dual-conversion Futaba receiver Cox/Sanwa 8016 show narrower-band performance theothers shows what can done George P Steiner District 10 Frequency Co ordinator doing business GSP Products Sacramento CA has done careful tests hundreds RC systems has serviced Comparing measured characteristics real systems observed performances field data has showing leads conclusion receiver characteristics will required 1991 will include IF amplifier about -60 dB filtering outside 5 kHz passband same time Third Order Intercept Point least 0dB will required relative minimum input required full detected output draft copy AMAs ROC required operating characteristics distributed Toledo says about same thing lot words What happened Toledo hate sound like broken record Gold Star transmitter checkout program conducted Weak Sig nals Exposition Toledo OH once agaln showed umably sport trans mitters presented checking out toler ance Thats three threeCA NY OH have telling key future new receiver thats true have keep transmitters lined up too know have access spectrum analyzer know use know someone does tune rig now will sufficient suppress sidebands beginning 20 kHz least -50 dB -60 dB would better harmonics least -35 dB suppression will better same time check accuracy crystal should within Hz nominal value again closer better should mention half transmitter failures mentioned previously caused crystals way off frequency particularly Continued page 139 Balsa Spruce Plywood Kit Mfg match current prices now paying better quality Open Public 40-60% Discounts Sal Taibi Mike Taibi AMA CLUBS Ask about AMA Club Discounts minimum orders $10000 12020 Centralia Hawaiian Gardens CA 90716 213 865-3220 J C Trainers 60 Size40 Size20 Size See local dealer call us special prices DISTRIBUTED BY FLYS GREAT IDEAL BEGINNERS AIRPLANE THAT BUILDS IN HALF THE TIME Jig built balsa fuselage 90% Built wing Excellent instructions first time builder Full size plans Decal forms windshield JOHNNIE CASBURN MANUFACTURING CO 5715-SE E Rosedale Fort Worth TX 76112 Day 817/451-7537 t 817/572-1452 IFUUD W5558 7550 Ser GrbreI Roed codero CA 93422 488-1717 September 198641 Mon Fri 8am -4pm PST r $795 $425$75AVAILABLE AT AMERICAS$425 FINEST HOBBY SHOPS Miss RJ/Malinas Continued page 135 smooth After thorough sanding cover fuselage once light fiberglass cloth epoxy has hardened wetsand again fine sandpaper coat favorite finishing epoxy Take good care surface finish im perfect work will affect flying perform ance Trimming racing position center gravity GO quality construction weight should exceed 2200g ie 4 lb 14 oz empty fuel tank have decisive effect flying performance Needless say model must straight have ex cellent finish Prior first flight model should balanced CG corresponds plans radio system operations must checked check should re peated engine running full revs Trim model during first flight adjust pushrods after landing Carefully move CO during course further flights find position suits best control model model naturally responsive rudder elevator movements CG moved backwards vice versa well-tested trimmed model should always slightly nose heavynever reverse main purpose test flying find optimum CO best combination rudder elevator aileron travel limits used Modela MVVS 65 ORRT engine MVVS tuned exhaust turns 200 x 150mm prop 21000 22000 revs ground Never use plastic prop Sooner later likely tear apart resulting vibration will damage destroy model engine Use turned metal spinner must run true Should disturbing vibrations occur stop flying immediately try find cause fly model again until determination made may well lead crash common causes vibration loose unbalanced prop loose engine mounting screws loose wheel landing gear leg imperfect match ing wing fuselage Vibrations represent serious threat Pylon Racing model also damage servosthe durability limited During test flying try practice serious ly mechanic Fly Pylon race course Random flying open sky has no purpose hazardous test flight should much longer competition flight Never forget about safety F3D model flying especially ex hausting pilot best effective test fly often least once week weather reasonable number takeoffs Check model carefully after flight Clean good cleaner preserve pro tective wax Radio Technique/Myers Continued page 41 old even-numbered frequencies look CoxlSanwa 8016 test results above should convince that receiver implication its matched transmitter must considerably off frequency respond soweiltoasignal 10kHz awayfromthenominal value crystal Since crystals accuracyof00l%725 Hz easilyobtain able today transmitters plug-in crystals use fixing part problem should quite easy meeting hobby industry representa tives called Toledo Frequency Committee Chairman Fred Masks discuss problem crossover users specifically car boat operators using aircraft frequencies thing revealed meeting arent ones upset misuse frequencies Several useful suggestions developed obvious major sales outlets want cooperate program educate hoped control abusers ofthe RC operating privilege Expect start seeing labels transmitters specifying what used surface-only alrcraft-only About scanners July issue has out couple weeks have swamped calls about scanners Please con tact District Frequency Coordinator borrow scanner assigned AMA district can learn lot way subject take out July 1986 issue ModelAviation turn page 36 correct George Wilsons address 82 Frazier Way Marstons Mills MA 02648 lieve two calls came because moved published address About RF modems Recently received package literature Mr GF Vargo VP Engineering EST Kennewick WA 99336 manufacturers ESTeem wireless modem Mr Vargo explains ESTeem Wireless Modem .licensed under Part 90 Subpart K FCC regulations. .the RE modem market aware Further ESTeem modem .utilizes digital phase lock loop conjunction synthesizer frequency generation frequencies start 72040 continue 72960 40 kHz steps. ESTeem brochure gleaned information receiver works 12 VDC uses dual conversion has sensitivity five micro-volts information presented reply column noted press release another magazine quoted use both odd- even-numbered RC frequencies doubted May 86 could case Mr Vargos letter continues .To insure modem users aware possible conflicts RC modeler note stating fact displayed transmitter receiver frequen cy-select charts ESTeem Operating Man ual encouraging non-usage 6 RC frequencies copy page manual included shared channels marked exactly claims Im sure know ESTeem under no obligation us .the ESTeem does use new channels assigned RC modelers Continued page 142 DIA 6 7 8 8* 9 10 10 11 11 11 * 12 13 14 15 16 3 4 28 3 3* 4 5 6 3 3&3/4 4 5 6 8 4 5 6 6* 7 4 5 6 8* 7 7* 4 5 66W 6* 78W 6EW 4 6 7 7* 7* 7&3/4 8 6EW 6 7 4W 5 5W 6 5 6 5 6 5 6 6 78 FOUR-CYCLE TAILORED HELICAL PITCH 126 6* 7 7* 8 136 7 7*8 146 7 7*8 1567 16678 PRICE $149 $179 $189 $199 $199 $209 $219 $229 $239 $239 $279 $359 $459 $659 $949 $299 $389 $489 $689 $989 PYLON RACING 75N 5*N* 8&3/46* 6&3/4 7 7* 7&3/4 97 7* 7&3/4 W Wklebiade EW EzLFo wide N $279 $289 $289 Narrow SPECIALISTS IN CUSTOM COX TEE DEE & REED ENGINES COMPLETE INVENTORY OF CUSTOM & STOCK PARTS OLD TIMER SUPPLIES CARBON FIBER COILS CONDENSERS SILK TRANSISTOR IGNITION SYSTEMS TIMERS ETC REPLICA OR WICK ENGINES NE WI! 1/2A PLAYBOY SR FOR 1/2A TEXACO RIC FF ELECTRIC OR SPORT KIT $2995 ORDER BY MAIL OR PHONE 714 830-5162 SORRY NO COD VISA & MASTERCARD WELCOME DEALER INQUIRIES INVITED ALL PRICES ARE POSTPAID ON ORDERS OVER $10 ORDERS SHIPPED FIRST CLASS MAIL WITHIN 24 HRS CALIFORNIA RESIDENTS ADD 6% TAX September 1986 139 OUR INVENTORY AVERAGES OVER 8000 PROPSIII SPECIAL PRO SERIES PITCH ESTeem frequencies interstitial RC frequencies. continues .this device approved FCC July 1985 though normal channels no intent no intent now will ever intent infringe frequencies used RC modeler Mr Vargo goes list long history AMA including posts Contest Director Past President Tn-City RC Modelers also included copy correspondence Carl Maroney Special Services Director AMA states ESTeem understand importance RC modeling individual community stand behind AMA its endeavors modeling society EST will cooperate way can mutual benefit safely sharing 1 Basic Construction Begirruers 107 Mm 4995 2 Basic Flight Training Beginners 65 Mm . 4495 3World Model Aviatton 90 Mm 5 4Oshkosh Onerniese 55 Mm 995 SAirplane Funnies 30 Mm 5 SUS Scale Masters 60 Mm 7Warhirds Action 75 Mn 95 SHedge Hoppin Vol 145 Mm 9Which WavisUp 70Mns % lOHedge Hoppin Vol 1140 Mn 5 Rental DeposIt Retail Price TapeK Rental Duration 7 Days After DeliveryK KPayment Chech 110 dansl M 0 Visa MC Card # & K K Eup Date Phone C C 0 D s Availahle hy PhoneK ShippIng 3 75 Foreign Canada Add 10of Total K K Others 15 IL Res Add 7% Tan -K- emyofAviationR&D PO Box 277 K Hazel Crest IL 60429 335-0776 George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Skyhook/Api kos Continued page 42 wing trimmed flying creas ing hinge line wing tip ball-point pen crease can easily bend up trim tabs crack ing hinge About 1/16 positive trim tab should Youre ready go flying after quick spritz spray paint test sure brand doesnt attack foam along leading edge Release latch wanted latch super-simple quick easy build foolproof think setup comes pretty close see drawing inset plan Basically latch works releasing rubberband held place puslirod using extreme throw already-installed control servos used full up elevator servo allows gliders release relatively slow speed assuming youve dropped low throttle pulled up gentle stall use imagination release latch can used release drop launch host cargotruly sky hook RC Scale/Wischers Continued page 47 FAI Giant Scale subject Giant Scale World Championship brought before ClAM meeting Paris First inclinations downplay another RC event because proliferation added contests recent past Helicopter Pylon Soaring Scale Aero batics Electric RC events World Championship status another new event wasnt greeted great enthusiasm pointed out Dennis Thumpston Scale Committee chairman position losing Scale event now diminished interest Control Line Scale Giant Scale would replace Control Line would become International Contest rather World Championship Five na tions must compete two years maintaln Championship status has possible CL recently Finding five nations Giant Scale would easy matter Transporting Giant Scale alrplanes between continents across oceans may simple Modelers will need build alrplanes disassembled transpor tation small boxes insurmountable task done design stage Basic FAT rules state specifically must some limits placed dimensions weight power Australia offered set provisional rules Paris would need some modification fit within FAT established limits expect rules resubmitted 1987 Australian proposal followed present FAI Scale rules ex cept size weight absence com plexity bonus factor Now national aero clubs convinced Giant Scale just another passing fad would appear can become recognized championship event Strong struts Strength limited flexibility requirements landing gear new Douglas Mallplane Music wire struts look naked some sort covering Bass wood strips routed table saw pro vide snug fit A2-in music wire carved sanded streamlined shape bass strips glued music wire legs using either Wilhold RC-56 Weldbond ce ment Both adhesives have proper ties seeking type application remain slightly flexible after setting up impact rough landings will cause basswood shrouds peel away glues also bond well dissimilar materials Wood will shatter before slips wire final shaping sanding wood done after adhesive sets up about day two later Adhesive trapped inside struts Continued page 151 142 Model Aviation Americas alr waves Radio Technique/Myers What can say thank Mr Vargo Continued page 139information concern avoiding RFI RC channels hope other RF modem manufacturers will show much con cern avoiding interference RC channels
Edition: Model Aviation - 1986/09
Page Numbers: 40, 41, 139, 142
George MMyers NEW TOOL Jack Albrecht formerly Sales Manager Kraft figured out modify Kraft SRF module synthesizer puts out AM instead FM got Vein Mensimer Hayes Products San Marcos CA telephone 619/744-8546 modified case hadnt heard Hayes company bought Kraft liquidating inventory no servos Thank Jack gives first-class tool testing RC systems especially since buddy Bob Aberle also has first move check its output oscilloscope looked like highquality 100% modulation narrow-band AM output nominal 400 mW Next checked channels worked found output RC 11 thru RC6O except RC4O expected synthesizer no output RC0O thru RC1O RC61 thru RC99 also should synthesizer though RF meter front panel Kraft MK IV Helicopter transmitter showed about 95 units RF across range RCOO thru RC99 well-known Kraft panel meter measures current synthesizer instead RF energy out theres no harm checking took group AM receivers off shelf tried control module didnt retune match module ground range resuls obtained antenna section extended about six inches outside transmitter case 1976 Futaba Contest 7 dual-conversion AM 72080 MHz RC 12 RC 13 RC 14 RC1 S RC 16 RC 17 no response no response servo jitters no control about foot 135 feet good control 72090 MHz servo jitters no response 1976 Cox/Sanwa 8016 single-conversion AM 72240 MHz RC21 RC22 RC23 RC24 RC25 no response four feet 200 feet good control 72250 MHz no response no response 1980 Novak single-conversion AM 72240 MHz RC2O RC21 RC22 RC23 MHz RC24 foot 1980 Ace R/C Silver Seven single-conversion AM RC5472870 MHz RC52 RC53 RC54 RC55 no response four feet jittery 64 feet good control 24 feet foot very fussy six feet 57 feet 7 2230 MHz 107 feet good control 72250 RC56 three feet jittery let reiterate receivers retuned match SRF transmitter done am sure ground ranges would improve also might adjacent-channel rejection properly-tuned receiver usually gives ground range about 180 feet situation Kraft Mk IV transmitter section extended antennas parallel receiver antenna lying ground maln point SRF AM transmitter able show approximately normal control over receivers long transmitter frequency within 10 kHz 40 Model Aviation Georges new AM synthesizer some old receivers tested commented month device gives him very handy tooi speed up fieid tests performs during unch-hour sessions place work hed rather flying Georges stIcK-wIggIer ets nim 00 fieid tests helper White object isa servo travel stops cut out eiectronics repiaced direct battery connection its motor constantiy moves transmitter controi function 72 MHz MODEL AIRCRAFT USESURFACE USE ONLYCC REGULATION 75 MHz SURFACE USEMODEL AIRCRAFT USE ONLY Its works AMA has made artwork stickers availabletothe RC manu facturers labeling system cartons and/or transmitters Another round fight keep Aircraft RC channels free unwanted interference receiver s nominal frequency need better receiver performance ie narrower bandwidths response dual-conversion Futaba receiver Cox/Sanwa 8016 show narrower-band performance theothers shows what can done George P Steiner District 10 Frequency Co ordinator doing business GSP Products Sacramento CA has done careful tests hundreds RC systems has serviced Comparing measured characteristics real systems observed performances field data has showing leads conclusion receiver characteristics will required 1991 will include IF amplifier about -60 dB filtering outside 5 kHz passband same time Third Order Intercept Point least 0dB will required relative minimum input required full detected output draft copy AMAs ROC required operating characteristics distributed Toledo says about same thing lot words What happened Toledo hate sound like broken record Gold Star transmitter checkout program conducted Weak Sig nals Exposition Toledo OH once agaln showed umably sport trans mitters presented checking out toler ance Thats three threeCA NY OH have telling key future new receiver thats true have keep transmitters lined up too know have access spectrum analyzer know use know someone does tune rig now will sufficient suppress sidebands beginning 20 kHz least -50 dB -60 dB would better harmonics least -35 dB suppression will better same time check accuracy crystal should within Hz nominal value again closer better should mention half transmitter failures mentioned previously caused crystals way off frequency particularly Continued page 139 Balsa Spruce Plywood Kit Mfg match current prices now paying better quality Open Public 40-60% Discounts Sal Taibi Mike Taibi AMA CLUBS Ask about AMA Club Discounts minimum orders $10000 12020 Centralia Hawaiian Gardens CA 90716 213 865-3220 J C Trainers 60 Size40 Size20 Size See local dealer call us special prices DISTRIBUTED BY FLYS GREAT IDEAL BEGINNERS AIRPLANE THAT BUILDS IN HALF THE TIME Jig built balsa fuselage 90% Built wing Excellent instructions first time builder Full size plans Decal forms windshield JOHNNIE CASBURN MANUFACTURING CO 5715-SE E Rosedale Fort Worth TX 76112 Day 817/451-7537 t 817/572-1452 IFUUD W5558 7550 Ser GrbreI Roed codero CA 93422 488-1717 September 198641 Mon Fri 8am -4pm PST r $795 $425$75AVAILABLE AT AMERICAS$425 FINEST HOBBY SHOPS Miss RJ/Malinas Continued page 135 smooth After thorough sanding cover fuselage once light fiberglass cloth epoxy has hardened wetsand again fine sandpaper coat favorite finishing epoxy Take good care surface finish im perfect work will affect flying perform ance Trimming racing position center gravity GO quality construction weight should exceed 2200g ie 4 lb 14 oz empty fuel tank have decisive effect flying performance Needless say model must straight have ex cellent finish Prior first flight model should balanced CG corresponds plans radio system operations must checked check should re peated engine running full revs Trim model during first flight adjust pushrods after landing Carefully move CO during course further flights find position suits best control model model naturally responsive rudder elevator movements CG moved backwards vice versa well-tested trimmed model should always slightly nose heavynever reverse main purpose test flying find optimum CO best combination rudder elevator aileron travel limits used Modela MVVS 65 ORRT engine MVVS tuned exhaust turns 200 x 150mm prop 21000 22000 revs ground Never use plastic prop Sooner later likely tear apart resulting vibration will damage destroy model engine Use turned metal spinner must run true Should disturbing vibrations occur stop flying immediately try find cause fly model again until determination made may well lead crash common causes vibration loose unbalanced prop loose engine mounting screws loose wheel landing gear leg imperfect match ing wing fuselage Vibrations represent serious threat Pylon Racing model also damage servosthe durability limited During test flying try practice serious ly mechanic Fly Pylon race course Random flying open sky has no purpose hazardous test flight should much longer competition flight Never forget about safety F3D model flying especially ex hausting pilot best effective test fly often least once week weather reasonable number takeoffs Check model carefully after flight Clean good cleaner preserve pro tective wax Radio Technique/Myers Continued page 41 old even-numbered frequencies look CoxlSanwa 8016 test results above should convince that receiver implication its matched transmitter must considerably off frequency respond soweiltoasignal 10kHz awayfromthenominal value crystal Since crystals accuracyof00l%725 Hz easilyobtain able today transmitters plug-in crystals use fixing part problem should quite easy meeting hobby industry representa tives called Toledo Frequency Committee Chairman Fred Masks discuss problem crossover users specifically car boat operators using aircraft frequencies thing revealed meeting arent ones upset misuse frequencies Several useful suggestions developed obvious major sales outlets want cooperate program educate hoped control abusers ofthe RC operating privilege Expect start seeing labels transmitters specifying what used surface-only alrcraft-only About scanners July issue has out couple weeks have swamped calls about scanners Please con tact District Frequency Coordinator borrow scanner assigned AMA district can learn lot way subject take out July 1986 issue ModelAviation turn page 36 correct George Wilsons address 82 Frazier Way Marstons Mills MA 02648 lieve two calls came because moved published address About RF modems Recently received package literature Mr GF Vargo VP Engineering EST Kennewick WA 99336 manufacturers ESTeem wireless modem Mr Vargo explains ESTeem Wireless Modem .licensed under Part 90 Subpart K FCC regulations. .the RE modem market aware Further ESTeem modem .utilizes digital phase lock loop conjunction synthesizer frequency generation frequencies start 72040 continue 72960 40 kHz steps. ESTeem brochure gleaned information receiver works 12 VDC uses dual conversion has sensitivity five micro-volts information presented reply column noted press release another magazine quoted use both odd- even-numbered RC frequencies doubted May 86 could case Mr Vargos letter continues .To insure modem users aware possible conflicts RC modeler note stating fact displayed transmitter receiver frequen cy-select charts ESTeem Operating Man ual encouraging non-usage 6 RC frequencies copy page manual included shared channels marked exactly claims Im sure know ESTeem under no obligation us .the ESTeem does use new channels assigned RC modelers Continued page 142 DIA 6 7 8 8* 9 10 10 11 11 11 * 12 13 14 15 16 3 4 28 3 3* 4 5 6 3 3&3/4 4 5 6 8 4 5 6 6* 7 4 5 6 8* 7 7* 4 5 66W 6* 78W 6EW 4 6 7 7* 7* 7&3/4 8 6EW 6 7 4W 5 5W 6 5 6 5 6 5 6 6 78 FOUR-CYCLE TAILORED HELICAL PITCH 126 6* 7 7* 8 136 7 7*8 146 7 7*8 1567 16678 PRICE $149 $179 $189 $199 $199 $209 $219 $229 $239 $239 $279 $359 $459 $659 $949 $299 $389 $489 $689 $989 PYLON RACING 75N 5*N* 8&3/46* 6&3/4 7 7* 7&3/4 97 7* 7&3/4 W Wklebiade EW EzLFo wide N $279 $289 $289 Narrow SPECIALISTS IN CUSTOM COX TEE DEE & REED ENGINES COMPLETE INVENTORY OF CUSTOM & STOCK PARTS OLD TIMER SUPPLIES CARBON FIBER COILS CONDENSERS SILK TRANSISTOR IGNITION SYSTEMS TIMERS ETC REPLICA OR WICK ENGINES NE WI! 1/2A PLAYBOY SR FOR 1/2A TEXACO RIC FF ELECTRIC OR SPORT KIT $2995 ORDER BY MAIL OR PHONE 714 830-5162 SORRY NO COD VISA & MASTERCARD WELCOME DEALER INQUIRIES INVITED ALL PRICES ARE POSTPAID ON ORDERS OVER $10 ORDERS SHIPPED FIRST CLASS MAIL WITHIN 24 HRS CALIFORNIA RESIDENTS ADD 6% TAX September 1986 139 OUR INVENTORY AVERAGES OVER 8000 PROPSIII SPECIAL PRO SERIES PITCH ESTeem frequencies interstitial RC frequencies. continues .this device approved FCC July 1985 though normal channels no intent no intent now will ever intent infringe frequencies used RC modeler Mr Vargo goes list long history AMA including posts Contest Director Past President Tn-City RC Modelers also included copy correspondence Carl Maroney Special Services Director AMA states ESTeem understand importance RC modeling individual community stand behind AMA its endeavors modeling society EST will cooperate way can mutual benefit safely sharing 1 Basic Construction Begirruers 107 Mm 4995 2 Basic Flight Training Beginners 65 Mm . 4495 3World Model Aviatton 90 Mm 5 4Oshkosh Onerniese 55 Mm 995 SAirplane Funnies 30 Mm 5 SUS Scale Masters 60 Mm 7Warhirds Action 75 Mn 95 SHedge Hoppin Vol 145 Mm 9Which WavisUp 70Mns % lOHedge Hoppin Vol 1140 Mn 5 Rental DeposIt Retail Price TapeK Rental Duration 7 Days After DeliveryK KPayment Chech 110 dansl M 0 Visa MC Card # & K K Eup Date Phone C C 0 D s Availahle hy PhoneK ShippIng 3 75 Foreign Canada Add 10of Total K K Others 15 IL Res Add 7% Tan -K- emyofAviationR&D PO Box 277 K Hazel Crest IL 60429 335-0776 George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Skyhook/Api kos Continued page 42 wing trimmed flying creas ing hinge line wing tip ball-point pen crease can easily bend up trim tabs crack ing hinge About 1/16 positive trim tab should Youre ready go flying after quick spritz spray paint test sure brand doesnt attack foam along leading edge Release latch wanted latch super-simple quick easy build foolproof think setup comes pretty close see drawing inset plan Basically latch works releasing rubberband held place puslirod using extreme throw already-installed control servos used full up elevator servo allows gliders release relatively slow speed assuming youve dropped low throttle pulled up gentle stall use imagination release latch can used release drop launch host cargotruly sky hook RC Scale/Wischers Continued page 47 FAI Giant Scale subject Giant Scale World Championship brought before ClAM meeting Paris First inclinations downplay another RC event because proliferation added contests recent past Helicopter Pylon Soaring Scale Aero batics Electric RC events World Championship status another new event wasnt greeted great enthusiasm pointed out Dennis Thumpston Scale Committee chairman position losing Scale event now diminished interest Control Line Scale Giant Scale would replace Control Line would become International Contest rather World Championship Five na tions must compete two years maintaln Championship status has possible CL recently Finding five nations Giant Scale would easy matter Transporting Giant Scale alrplanes between continents across oceans may simple Modelers will need build alrplanes disassembled transpor tation small boxes insurmountable task done design stage Basic FAT rules state specifically must some limits placed dimensions weight power Australia offered set provisional rules Paris would need some modification fit within FAT established limits expect rules resubmitted 1987 Australian proposal followed present FAI Scale rules ex cept size weight absence com plexity bonus factor Now national aero clubs convinced Giant Scale just another passing fad would appear can become recognized championship event Strong struts Strength limited flexibility requirements landing gear new Douglas Mallplane Music wire struts look naked some sort covering Bass wood strips routed table saw pro vide snug fit A2-in music wire carved sanded streamlined shape bass strips glued music wire legs using either Wilhold RC-56 Weldbond ce ment Both adhesives have proper ties seeking type application remain slightly flexible after setting up impact rough landings will cause basswood shrouds peel away glues also bond well dissimilar materials Wood will shatter before slips wire final shaping sanding wood done after adhesive sets up about day two later Adhesive trapped inside struts Continued page 151 142 Model Aviation Americas alr waves Radio Technique/Myers What can say thank Mr Vargo Continued page 139information concern avoiding RFI RC channels hope other RF modem manufacturers will show much con cern avoiding interference RC channels
Edition: Model Aviation - 1986/09
Page Numbers: 40, 41, 139, 142
George MMyers NEW TOOL Jack Albrecht formerly Sales Manager Kraft figured out modify Kraft SRF module synthesizer puts out AM instead FM got Vein Mensimer Hayes Products San Marcos CA telephone 619/744-8546 modified case hadnt heard Hayes company bought Kraft liquidating inventory no servos Thank Jack gives first-class tool testing RC systems especially since buddy Bob Aberle also has first move check its output oscilloscope looked like highquality 100% modulation narrow-band AM output nominal 400 mW Next checked channels worked found output RC 11 thru RC6O except RC4O expected synthesizer no output RC0O thru RC1O RC61 thru RC99 also should synthesizer though RF meter front panel Kraft MK IV Helicopter transmitter showed about 95 units RF across range RCOO thru RC99 well-known Kraft panel meter measures current synthesizer instead RF energy out theres no harm checking took group AM receivers off shelf tried control module didnt retune match module ground range resuls obtained antenna section extended about six inches outside transmitter case 1976 Futaba Contest 7 dual-conversion AM 72080 MHz RC 12 RC 13 RC 14 RC1 S RC 16 RC 17 no response no response servo jitters no control about foot 135 feet good control 72090 MHz servo jitters no response 1976 Cox/Sanwa 8016 single-conversion AM 72240 MHz RC21 RC22 RC23 RC24 RC25 no response four feet 200 feet good control 72250 MHz no response no response 1980 Novak single-conversion AM 72240 MHz RC2O RC21 RC22 RC23 MHz RC24 foot 1980 Ace R/C Silver Seven single-conversion AM RC5472870 MHz RC52 RC53 RC54 RC55 no response four feet jittery 64 feet good control 24 feet foot very fussy six feet 57 feet 7 2230 MHz 107 feet good control 72250 RC56 three feet jittery let reiterate receivers retuned match SRF transmitter done am sure ground ranges would improve also might adjacent-channel rejection properly-tuned receiver usually gives ground range about 180 feet situation Kraft Mk IV transmitter section extended antennas parallel receiver antenna lying ground maln point SRF AM transmitter able show approximately normal control over receivers long transmitter frequency within 10 kHz 40 Model Aviation Georges new AM synthesizer some old receivers tested commented month device gives him very handy tooi speed up fieid tests performs during unch-hour sessions place work hed rather flying Georges stIcK-wIggIer ets nim 00 fieid tests helper White object isa servo travel stops cut out eiectronics repiaced direct battery connection its motor constantiy moves transmitter controi function 72 MHz MODEL AIRCRAFT USESURFACE USE ONLYCC REGULATION 75 MHz SURFACE USEMODEL AIRCRAFT USE ONLY Its works AMA has made artwork stickers availabletothe RC manu facturers labeling system cartons and/or transmitters Another round fight keep Aircraft RC channels free unwanted interference receiver s nominal frequency need better receiver performance ie narrower bandwidths response dual-conversion Futaba receiver Cox/Sanwa 8016 show narrower-band performance theothers shows what can done George P Steiner District 10 Frequency Co ordinator doing business GSP Products Sacramento CA has done careful tests hundreds RC systems has serviced Comparing measured characteristics real systems observed performances field data has showing leads conclusion receiver characteristics will required 1991 will include IF amplifier about -60 dB filtering outside 5 kHz passband same time Third Order Intercept Point least 0dB will required relative minimum input required full detected output draft copy AMAs ROC required operating characteristics distributed Toledo says about same thing lot words What happened Toledo hate sound like broken record Gold Star transmitter checkout program conducted Weak Sig nals Exposition Toledo OH once agaln showed umably sport trans mitters presented checking out toler ance Thats three threeCA NY OH have telling key future new receiver thats true have keep transmitters lined up too know have access spectrum analyzer know use know someone does tune rig now will sufficient suppress sidebands beginning 20 kHz least -50 dB -60 dB would better harmonics least -35 dB suppression will better same time check accuracy crystal should within Hz nominal value again closer better should mention half transmitter failures mentioned previously caused crystals way off frequency particularly Continued page 139 Balsa Spruce Plywood Kit Mfg match current prices now paying better quality Open Public 40-60% Discounts Sal Taibi Mike Taibi AMA CLUBS Ask about AMA Club Discounts minimum orders $10000 12020 Centralia Hawaiian Gardens CA 90716 213 865-3220 J C Trainers 60 Size40 Size20 Size See local dealer call us special prices DISTRIBUTED BY FLYS GREAT IDEAL BEGINNERS AIRPLANE THAT BUILDS IN HALF THE TIME Jig built balsa fuselage 90% Built wing Excellent instructions first time builder Full size plans Decal forms windshield JOHNNIE CASBURN MANUFACTURING CO 5715-SE E Rosedale Fort Worth TX 76112 Day 817/451-7537 t 817/572-1452 IFUUD W5558 7550 Ser GrbreI Roed codero CA 93422 488-1717 September 198641 Mon Fri 8am -4pm PST r $795 $425$75AVAILABLE AT AMERICAS$425 FINEST HOBBY SHOPS Miss RJ/Malinas Continued page 135 smooth After thorough sanding cover fuselage once light fiberglass cloth epoxy has hardened wetsand again fine sandpaper coat favorite finishing epoxy Take good care surface finish im perfect work will affect flying perform ance Trimming racing position center gravity GO quality construction weight should exceed 2200g ie 4 lb 14 oz empty fuel tank have decisive effect flying performance Needless say model must straight have ex cellent finish Prior first flight model should balanced CG corresponds plans radio system operations must checked check should re peated engine running full revs Trim model during first flight adjust pushrods after landing Carefully move CO during course further flights find position suits best control model model naturally responsive rudder elevator movements CG moved backwards vice versa well-tested trimmed model should always slightly nose heavynever reverse main purpose test flying find optimum CO best combination rudder elevator aileron travel limits used Modela MVVS 65 ORRT engine MVVS tuned exhaust turns 200 x 150mm prop 21000 22000 revs ground Never use plastic prop Sooner later likely tear apart resulting vibration will damage destroy model engine Use turned metal spinner must run true Should disturbing vibrations occur stop flying immediately try find cause fly model again until determination made may well lead crash common causes vibration loose unbalanced prop loose engine mounting screws loose wheel landing gear leg imperfect match ing wing fuselage Vibrations represent serious threat Pylon Racing model also damage servosthe durability limited During test flying try practice serious ly mechanic Fly Pylon race course Random flying open sky has no purpose hazardous test flight should much longer competition flight Never forget about safety F3D model flying especially ex hausting pilot best effective test fly often least once week weather reasonable number takeoffs Check model carefully after flight Clean good cleaner preserve pro tective wax Radio Technique/Myers Continued page 41 old even-numbered frequencies look CoxlSanwa 8016 test results above should convince that receiver implication its matched transmitter must considerably off frequency respond soweiltoasignal 10kHz awayfromthenominal value crystal Since crystals accuracyof00l%725 Hz easilyobtain able today transmitters plug-in crystals use fixing part problem should quite easy meeting hobby industry representa tives called Toledo Frequency Committee Chairman Fred Masks discuss problem crossover users specifically car boat operators using aircraft frequencies thing revealed meeting arent ones upset misuse frequencies Several useful suggestions developed obvious major sales outlets want cooperate program educate hoped control abusers ofthe RC operating privilege Expect start seeing labels transmitters specifying what used surface-only alrcraft-only About scanners July issue has out couple weeks have swamped calls about scanners Please con tact District Frequency Coordinator borrow scanner assigned AMA district can learn lot way subject take out July 1986 issue ModelAviation turn page 36 correct George Wilsons address 82 Frazier Way Marstons Mills MA 02648 lieve two calls came because moved published address About RF modems Recently received package literature Mr GF Vargo VP Engineering EST Kennewick WA 99336 manufacturers ESTeem wireless modem Mr Vargo explains ESTeem Wireless Modem .licensed under Part 90 Subpart K FCC regulations. .the RE modem market aware Further ESTeem modem .utilizes digital phase lock loop conjunction synthesizer frequency generation frequencies start 72040 continue 72960 40 kHz steps. ESTeem brochure gleaned information receiver works 12 VDC uses dual conversion has sensitivity five micro-volts information presented reply column noted press release another magazine quoted use both odd- even-numbered RC frequencies doubted May 86 could case Mr Vargos letter continues .To insure modem users aware possible conflicts RC modeler note stating fact displayed transmitter receiver frequen cy-select charts ESTeem Operating Man ual encouraging non-usage 6 RC frequencies copy page manual included shared channels marked exactly claims Im sure know ESTeem under no obligation us .the ESTeem does use new channels assigned RC modelers Continued page 142 DIA 6 7 8 8* 9 10 10 11 11 11 * 12 13 14 15 16 3 4 28 3 3* 4 5 6 3 3&3/4 4 5 6 8 4 5 6 6* 7 4 5 6 8* 7 7* 4 5 66W 6* 78W 6EW 4 6 7 7* 7* 7&3/4 8 6EW 6 7 4W 5 5W 6 5 6 5 6 5 6 6 78 FOUR-CYCLE TAILORED HELICAL PITCH 126 6* 7 7* 8 136 7 7*8 146 7 7*8 1567 16678 PRICE $149 $179 $189 $199 $199 $209 $219 $229 $239 $239 $279 $359 $459 $659 $949 $299 $389 $489 $689 $989 PYLON RACING 75N 5*N* 8&3/46* 6&3/4 7 7* 7&3/4 97 7* 7&3/4 W Wklebiade EW EzLFo wide N $279 $289 $289 Narrow SPECIALISTS IN CUSTOM COX TEE DEE & REED ENGINES COMPLETE INVENTORY OF CUSTOM & STOCK PARTS OLD TIMER SUPPLIES CARBON FIBER COILS CONDENSERS SILK TRANSISTOR IGNITION SYSTEMS TIMERS ETC REPLICA OR WICK ENGINES NE WI! 1/2A PLAYBOY SR FOR 1/2A TEXACO RIC FF ELECTRIC OR SPORT KIT $2995 ORDER BY MAIL OR PHONE 714 830-5162 SORRY NO COD VISA & MASTERCARD WELCOME DEALER INQUIRIES INVITED ALL PRICES ARE POSTPAID ON ORDERS OVER $10 ORDERS SHIPPED FIRST CLASS MAIL WITHIN 24 HRS CALIFORNIA RESIDENTS ADD 6% TAX September 1986 139 OUR INVENTORY AVERAGES OVER 8000 PROPSIII SPECIAL PRO SERIES PITCH ESTeem frequencies interstitial RC frequencies. continues .this device approved FCC July 1985 though normal channels no intent no intent now will ever intent infringe frequencies used RC modeler Mr Vargo goes list long history AMA including posts Contest Director Past President Tn-City RC Modelers also included copy correspondence Carl Maroney Special Services Director AMA states ESTeem understand importance RC modeling individual community stand behind AMA its endeavors modeling society EST will cooperate way can mutual benefit safely sharing 1 Basic Construction Begirruers 107 Mm 4995 2 Basic Flight Training Beginners 65 Mm . 4495 3World Model Aviatton 90 Mm 5 4Oshkosh Onerniese 55 Mm 995 SAirplane Funnies 30 Mm 5 SUS Scale Masters 60 Mm 7Warhirds Action 75 Mn 95 SHedge Hoppin Vol 145 Mm 9Which WavisUp 70Mns % lOHedge Hoppin Vol 1140 Mn 5 Rental DeposIt Retail Price TapeK Rental Duration 7 Days After DeliveryK KPayment Chech 110 dansl M 0 Visa MC Card # & K K Eup Date Phone C C 0 D s Availahle hy PhoneK ShippIng 3 75 Foreign Canada Add 10of Total K K Others 15 IL Res Add 7% Tan -K- emyofAviationR&D PO Box 277 K Hazel Crest IL 60429 335-0776 George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Skyhook/Api kos Continued page 42 wing trimmed flying creas ing hinge line wing tip ball-point pen crease can easily bend up trim tabs crack ing hinge About 1/16 positive trim tab should Youre ready go flying after quick spritz spray paint test sure brand doesnt attack foam along leading edge Release latch wanted latch super-simple quick easy build foolproof think setup comes pretty close see drawing inset plan Basically latch works releasing rubberband held place puslirod using extreme throw already-installed control servos used full up elevator servo allows gliders release relatively slow speed assuming youve dropped low throttle pulled up gentle stall use imagination release latch can used release drop launch host cargotruly sky hook RC Scale/Wischers Continued page 47 FAI Giant Scale subject Giant Scale World Championship brought before ClAM meeting Paris First inclinations downplay another RC event because proliferation added contests recent past Helicopter Pylon Soaring Scale Aero batics Electric RC events World Championship status another new event wasnt greeted great enthusiasm pointed out Dennis Thumpston Scale Committee chairman position losing Scale event now diminished interest Control Line Scale Giant Scale would replace Control Line would become International Contest rather World Championship Five na tions must compete two years maintaln Championship status has possible CL recently Finding five nations Giant Scale would easy matter Transporting Giant Scale alrplanes between continents across oceans may simple Modelers will need build alrplanes disassembled transpor tation small boxes insurmountable task done design stage Basic FAT rules state specifically must some limits placed dimensions weight power Australia offered set provisional rules Paris would need some modification fit within FAT established limits expect rules resubmitted 1987 Australian proposal followed present FAI Scale rules ex cept size weight absence com plexity bonus factor Now national aero clubs convinced Giant Scale just another passing fad would appear can become recognized championship event Strong struts Strength limited flexibility requirements landing gear new Douglas Mallplane Music wire struts look naked some sort covering Bass wood strips routed table saw pro vide snug fit A2-in music wire carved sanded streamlined shape bass strips glued music wire legs using either Wilhold RC-56 Weldbond ce ment Both adhesives have proper ties seeking type application remain slightly flexible after setting up impact rough landings will cause basswood shrouds peel away glues also bond well dissimilar materials Wood will shatter before slips wire final shaping sanding wood done after adhesive sets up about day two later Adhesive trapped inside struts Continued page 151 142 Model Aviation Americas alr waves Radio Technique/Myers What can say thank Mr Vargo Continued page 139information concern avoiding RFI RC channels hope other RF modem manufacturers will show much con cern avoiding interference RC channels
