or echnique PROPOSED RCFREQUENCY CHANNEL NORANGEREMARKS 1 though 626995No change Primarily RC cars boats 27255Useful aircraft Canada 4 Watts maximum 71149 MHzPrimarily toys Thermic Sniffler 100 mIN max 122450000f Amateur Radio band Requires special license New 54000 channels being negotiated Ham groups 1000W max Colored Streamers 72080 Use will continued 10 years 75640 goes 75640mixed usage % W max 255072010AIRCRAFT LOW BAND Odd-numbered frequen 72510cies steps 02 MHz Requires new re ceivers other 455 KHz IF % W max 51-7472530AIRCRAFT HIGH BAND Odd-numbered frequen 72990cies steps 02 MHz 455 KHz IF okay Existing receivers may usable new crystals 3A W max 759775410NON-AIRCRAFT BAND Note band 3 75850MHz away Aircraft bands crystalswapping should produce interferences % W max DEFINITIONS PRS onal Radio Service know 7276 MHz MHz MegaHertz Another way say Millions cycles/second IF Intermediate Frequency An internal part receiving process VOR VHF Omni-Range Think radio-compass communications added IT MAY BE few people confused over what AMA frequency allocation proposal encompasses Perhaps explanation will help provide clearer understanding 1 Our present channels 72 76 MHz Personal Radio Service PRS band part scheme has channel assignments 20 KHz apart beginning 72020 continuing 7204072060 72080 72100 etc 72080 being first authorized frequency band radio control models assignments shared high-powered users brown/white rI0o0 0000 NNNN aNNNNN g 0 - Frequency e s 0 uo uJs NOTE These ficticious user names idealized wave-forms Heres RC frequencies 72 MHz bandl look today 2 AMA has proposed splitting existing channels produce new channels 10 KHz intervals beginning 720 10 continuing 72030 72050 72070 through 72990 MHz asking new channels shared high-powered users New Channel Numbers N N~0 5 . 000 0 C co cj00 - Frequency xisting Channel NOTE expect lose two channels existing channel remaining use frequency picture would look likethis AMAs proposal FCC approved shorties RC channelsothers high-power users 3 Whether new channels restricted low-powered users resolved however high-powered users will continue operate even-numbered frequencies permitted under Part 90 FCC rules Therefore can expect higherpower signals have potential interfere odd-numbered channels Meantime ask ing use far channels can use place time virtually certain able find enough channels somewhere within 50 frequencies available purposes throughout United States Based concept predict trans mitters will sprout new frequency-changing knob similar 40-channel knob GB transceivers Frequency management flying sites will become concern requiring better control monitoring sales frequency scanners will likely pick up bit Receivers will probably continue crystalcontrolled interests lightness sim plicity sales crystals will also increase present equipment still has value As time passes will become less valuable because high-powered users public safety land trans portation common carrier industrial will take over even-numbered channels area happens equipment will useless slight possibility will able put new odd-channel crystals receivers get bit use please understand new narrow-band 10 KHz receiver proper solution definite will have buy new narrow-band transmitter because few current generation RC transmitters can comply narrow bandwidth tight frequency tolerance necessary keep RC signal contained within new narrower channels Sure sounds unfair Now let tell about private airplane owner Fifteen years ago FCC split aerial navigation channels order continue use 109 135 MHz VOR VHF Omni-Range radio-navigation system system owner spend about $5000 pair new 360-channel transceivers Some tried get old 90- 180channel equipment didnt work system demanded got new equipment Its result population explosion people try crowd fixed space available way can stand closer together Channel-splitting way stand closer 1985 VOR channels will split again 720 channels might ask doesnt FCC give us exclusive use channels somewhere else band answer quite simple open space left such high frequencies can tafford equipment Members AMA Frequency Committee doing experi mental work band right now could quit flying til get worked out dont think will Besides expect situation will improve As new split channels go effect whether confined lowpowered users seems reasonable predict FCC will require users go narrow-band transmissions existing high-powered users will forced pull skirts will make room us exactly what happened VOR band uses up space allocation Keep reading column writing letters hearty thanks George M Myers 70 Froehlich Farm Rd Hickssille NY 11801 NEW SUBJECT MET him clearing mowed worn flat nothing about him spoke rank profession clothing worn comfortable-looking exactly 28 Model Aviation George M Myers (a 01 5O clean eyes seen enough life know difference between truth wishful thinking spoke things dear heart fly RC bit help out can year see new group beginners making same old group mistakes ought better way introduce someone hobby forc ing apprenticeship frustration expensive errors example someone should tell Ninety percent beginners will display brand-new motors wearing oversized propel lers year see another repetition fly 30 seconds until motor seizes activity Please guys break engines home running wet fast undersized propeller have new 40 break 9-6 its 60 use 10-6 cut-down 11-7 almost impossible run engine too fast use low-nitro 10% sport fuel time get down propeller size might let engine over-rev wont enough wood hub drill proper hole shaft Stop worrying about overspeeding engine Worry instead about overheating because thats what doing damage engines Pay no attention what manufacturer recommendsbecause thats well-broken-in engine Leave big props alone until engine can stand up Use small props run fast cool should able grab cylinder head engine runningand hold head should warm hot Tap first fingertip find out good test needle-valve setting Drill through assembled structure Press dowel Clip flush & Glue place Pin both tabs hinge 7 / / p 0 put hand about six inches behind muffler hand should get covered water-clear coating warm oil cant stand heat exhaust open up richen needle-valve til can oil has brown color needle set too lean oil has black color some metal wearing better stop engine right away find out Fix before running engine again Seventy-jive percent beginners will get glue pin control surface hinges standard pre-flight inspection includes healthy tug control surface almost always pull something loose beginner finds embarrasing has caught making mistake Embarrassment isnt fatal Perhaps no told hinges come mold-release coating has scrubbed otTin hot water have Epoxy doesnt stick mold-release compound After you have installed hinges binding up epoxy drill 3/32-in hole right through wing tail control surface side-to-side through hinge tab push section 3/32-in dowel epoxy place can also use ZAP another cyanoacrylic adhesive wish Cut dowel flush side paint over hinges will stay Fifty percent beginners will have controls connected outside hole control horn gives minimum control first flight airplane almost certain way out trim test pilot usually needs control can get keep plane between weeds clouds Give him break Set up least 300 control motion After gets things sorted Out control throws can reduced student dimensions least 50% beginners will show up plane totally unsuited training first plane should disposable candy wrapper advise use all-foam ARF like Gold berg Ranger 42 Midwest Cardinal MRC Eagle etc Paint top wing bright red dont use dopeitll melt foam leave rest alone Dont make pretty make pretty youll afraid land Make ugly consider dirt dings proof making progress Foam nice because eats up shock crash thats whez fl foam will protect engine radio gather up little white pieces epoxy back together put new prop go back flying plane gets heavy weight added epoxy wont fly will have learned enough take pretty plane good trainer plane wont fly itself really hate see people out first time converted Free Flight model first place learn lot bad habits will eventually have dispose order make progress Getting rid bad habits like trying throw away feather thats dipped molasses learn faster better learn right things first common complaint beginners spend too much time waiting line two chances fly week end complaint has merit lot waiting happens because beginners show up unflyable aircraft instructor wastes lot valuable time correcting mistakes ground retrimming plane air week student has done something im prove plane effect session starts new airplane Get right leave alone Once get instructors attention have flight plan Dont expect instructor plan life isnt running school students same things same time Hes putting up endless stream opinionated individuals biggest job instructors book findingout what preconceived notions have wrong worst student lies bed figures out mind convinces himself what things should right right makes him unteachable So instead wasting time guessing things ought spend time plan ning things have learn What Im saying dont try guess make landing instructor will teach Instead consult yourself assess what know confident can fly straight level over predetermined path ground can make left right turns changing altitude youve got left right sorted out both coming going should concentrate learning land Tell instructor week Im ready land what its worth offer plan offer students July 1981 29 THE GEORGE M MYERS FLIGHT TRAINING PLAN 1 Straight level flightoutand backlracaerackpatternl As soon student cee ate mote-st-less constant altitude move 2 5-tumsoutandback macnoon doneovera ground teferenoe Irse such roadorfesce regard fotthewied Itteanhes coordination asd automatic nompensation mind drift 3 5pins renoserias need understand get Out spin hefote heoe cheece become frightened third lessoe ussally 4 Loops rells Everybody likes show off aed sum time Its great confidence builder Ahout holf beginners will make Figore 5 insteod leopl doet keow hut rm prepared 5 Traffic patterns landings hase stodeet fly rectaegular peosre left right about 75 feet altitude aed about ttle pot ie left-hand pastern talkthem eto flying lowetand lower Whee theycome eye level reach over end shut down power telling concentrate keeping wings level dv lend withoot difficolty 6 Takeoffs save fur lest keep eut path temptation 7 Ineerted flying student will let try get him inoerted soon possible Some will doing inverted racotracks hefore wooing veto S-turns aed back m delighted student does some folks get theway rotakeoffs landings beforethey will try inverted flying Pooplo different ones work out best start icoerted flyieg earliest denelops yoor mind control 5 Emergency procedares As soon studect can leed reliably start teachieg emergency procedures number procedure rspetniegback hefdatterpos base flown too high andios fardswnwind studeets conticuous dimS takeoff never seem understand fool burns off nose gets light have keep cranking nose-down trim flight progresses As plane climbs higher wied blows stronger Inevitably rho place gets far up solar dowcwind rye student cact figure out way going watch him sod let happen hes good scared take bos tell himihat will diveformyfent Afterdsingaleeptsssrtsut uPeed OOWN ifnecessary aedaleveltvrntonsrtnutcOMlNOfrom GOING put cone down dive aimieg atmyfeet poict suithat iralwaysseemstotakeforevertogetback hecauvetheplane rsbvckrngtbe wind also point out place has show thetopof its wing stir will fly over head Mont students getiho messagethe first time number two procedure feb-handed fping Virtually everyoce fliev Model days two sticks aileroeielevatoroe right stick throttle/rudder left trim place forstrarght aed level flight half throttle demonstrate thetincreasing power results ma climb whilndecreasicgpowerprsducesadescent Nest backtostrarghtand level demonvirain howiodder plus alittleaddedpower produces nice level turns Sack routiun No S racesracks using left-stick Eventually student may perform sin routines leftstick instructor can confident hasnt released another right-handed cripple oc modeling world Whats important about lnft-haedcdflyieg Aileron sewos hingos have Seen known fail ussallyas resslioffluttor can left-handed flying hit have good chance sfgetticg plane down safely injuring anyone Just make both sticks move left/right together Its easy youve practiced itl Maybe youll need tofly Old-Timer Irkethe Piper cub Long wings can make fyrsuch slow aileron responsefrequently adverse yaw high angles attack such during landingthat way pick up low wing hy ose rudder Maybe youll want help nut begroneiwbo has ofihe rovk-bottom-price two-channel radios throttle left rudder right Youll have lot iroshle youre two-listed flier
Edition: Model Aviation - 1981/07
Page Numbers: 28, 29
or echnique PROPOSED RCFREQUENCY CHANNEL NORANGEREMARKS 1 though 626995No change Primarily RC cars boats 27255Useful aircraft Canada 4 Watts maximum 71149 MHzPrimarily toys Thermic Sniffler 100 mIN max 122450000f Amateur Radio band Requires special license New 54000 channels being negotiated Ham groups 1000W max Colored Streamers 72080 Use will continued 10 years 75640 goes 75640mixed usage % W max 255072010AIRCRAFT LOW BAND Odd-numbered frequen 72510cies steps 02 MHz Requires new re ceivers other 455 KHz IF % W max 51-7472530AIRCRAFT HIGH BAND Odd-numbered frequen 72990cies steps 02 MHz 455 KHz IF okay Existing receivers may usable new crystals 3A W max 759775410NON-AIRCRAFT BAND Note band 3 75850MHz away Aircraft bands crystalswapping should produce interferences % W max DEFINITIONS PRS onal Radio Service know 7276 MHz MHz MegaHertz Another way say Millions cycles/second IF Intermediate Frequency An internal part receiving process VOR VHF Omni-Range Think radio-compass communications added IT MAY BE few people confused over what AMA frequency allocation proposal encompasses Perhaps explanation will help provide clearer understanding 1 Our present channels 72 76 MHz Personal Radio Service PRS band part scheme has channel assignments 20 KHz apart beginning 72020 continuing 7204072060 72080 72100 etc 72080 being first authorized frequency band radio control models assignments shared high-powered users brown/white rI0o0 0000 NNNN aNNNNN g 0 - Frequency e s 0 uo uJs NOTE These ficticious user names idealized wave-forms Heres RC frequencies 72 MHz bandl look today 2 AMA has proposed splitting existing channels produce new channels 10 KHz intervals beginning 720 10 continuing 72030 72050 72070 through 72990 MHz asking new channels shared high-powered users New Channel Numbers N N~0 5 . 000 0 C co cj00 - Frequency xisting Channel NOTE expect lose two channels existing channel remaining use frequency picture would look likethis AMAs proposal FCC approved shorties RC channelsothers high-power users 3 Whether new channels restricted low-powered users resolved however high-powered users will continue operate even-numbered frequencies permitted under Part 90 FCC rules Therefore can expect higherpower signals have potential interfere odd-numbered channels Meantime ask ing use far channels can use place time virtually certain able find enough channels somewhere within 50 frequencies available purposes throughout United States Based concept predict trans mitters will sprout new frequency-changing knob similar 40-channel knob GB transceivers Frequency management flying sites will become concern requiring better control monitoring sales frequency scanners will likely pick up bit Receivers will probably continue crystalcontrolled interests lightness sim plicity sales crystals will also increase present equipment still has value As time passes will become less valuable because high-powered users public safety land trans portation common carrier industrial will take over even-numbered channels area happens equipment will useless slight possibility will able put new odd-channel crystals receivers get bit use please understand new narrow-band 10 KHz receiver proper solution definite will have buy new narrow-band transmitter because few current generation RC transmitters can comply narrow bandwidth tight frequency tolerance necessary keep RC signal contained within new narrower channels Sure sounds unfair Now let tell about private airplane owner Fifteen years ago FCC split aerial navigation channels order continue use 109 135 MHz VOR VHF Omni-Range radio-navigation system system owner spend about $5000 pair new 360-channel transceivers Some tried get old 90- 180channel equipment didnt work system demanded got new equipment Its result population explosion people try crowd fixed space available way can stand closer together Channel-splitting way stand closer 1985 VOR channels will split again 720 channels might ask doesnt FCC give us exclusive use channels somewhere else band answer quite simple open space left such high frequencies can tafford equipment Members AMA Frequency Committee doing experi mental work band right now could quit flying til get worked out dont think will Besides expect situation will improve As new split channels go effect whether confined lowpowered users seems reasonable predict FCC will require users go narrow-band transmissions existing high-powered users will forced pull skirts will make room us exactly what happened VOR band uses up space allocation Keep reading column writing letters hearty thanks George M Myers 70 Froehlich Farm Rd Hickssille NY 11801 NEW SUBJECT MET him clearing mowed worn flat nothing about him spoke rank profession clothing worn comfortable-looking exactly 28 Model Aviation George M Myers (a 01 5O clean eyes seen enough life know difference between truth wishful thinking spoke things dear heart fly RC bit help out can year see new group beginners making same old group mistakes ought better way introduce someone hobby forc ing apprenticeship frustration expensive errors example someone should tell Ninety percent beginners will display brand-new motors wearing oversized propel lers year see another repetition fly 30 seconds until motor seizes activity Please guys break engines home running wet fast undersized propeller have new 40 break 9-6 its 60 use 10-6 cut-down 11-7 almost impossible run engine too fast use low-nitro 10% sport fuel time get down propeller size might let engine over-rev wont enough wood hub drill proper hole shaft Stop worrying about overspeeding engine Worry instead about overheating because thats what doing damage engines Pay no attention what manufacturer recommendsbecause thats well-broken-in engine Leave big props alone until engine can stand up Use small props run fast cool should able grab cylinder head engine runningand hold head should warm hot Tap first fingertip find out good test needle-valve setting Drill through assembled structure Press dowel Clip flush & Glue place Pin both tabs hinge 7 / / p 0 put hand about six inches behind muffler hand should get covered water-clear coating warm oil cant stand heat exhaust open up richen needle-valve til can oil has brown color needle set too lean oil has black color some metal wearing better stop engine right away find out Fix before running engine again Seventy-jive percent beginners will get glue pin control surface hinges standard pre-flight inspection includes healthy tug control surface almost always pull something loose beginner finds embarrasing has caught making mistake Embarrassment isnt fatal Perhaps no told hinges come mold-release coating has scrubbed otTin hot water have Epoxy doesnt stick mold-release compound After you have installed hinges binding up epoxy drill 3/32-in hole right through wing tail control surface side-to-side through hinge tab push section 3/32-in dowel epoxy place can also use ZAP another cyanoacrylic adhesive wish Cut dowel flush side paint over hinges will stay Fifty percent beginners will have controls connected outside hole control horn gives minimum control first flight airplane almost certain way out trim test pilot usually needs control can get keep plane between weeds clouds Give him break Set up least 300 control motion After gets things sorted Out control throws can reduced student dimensions least 50% beginners will show up plane totally unsuited training first plane should disposable candy wrapper advise use all-foam ARF like Gold berg Ranger 42 Midwest Cardinal MRC Eagle etc Paint top wing bright red dont use dopeitll melt foam leave rest alone Dont make pretty make pretty youll afraid land Make ugly consider dirt dings proof making progress Foam nice because eats up shock crash thats whez fl foam will protect engine radio gather up little white pieces epoxy back together put new prop go back flying plane gets heavy weight added epoxy wont fly will have learned enough take pretty plane good trainer plane wont fly itself really hate see people out first time converted Free Flight model first place learn lot bad habits will eventually have dispose order make progress Getting rid bad habits like trying throw away feather thats dipped molasses learn faster better learn right things first common complaint beginners spend too much time waiting line two chances fly week end complaint has merit lot waiting happens because beginners show up unflyable aircraft instructor wastes lot valuable time correcting mistakes ground retrimming plane air week student has done something im prove plane effect session starts new airplane Get right leave alone Once get instructors attention have flight plan Dont expect instructor plan life isnt running school students same things same time Hes putting up endless stream opinionated individuals biggest job instructors book findingout what preconceived notions have wrong worst student lies bed figures out mind convinces himself what things should right right makes him unteachable So instead wasting time guessing things ought spend time plan ning things have learn What Im saying dont try guess make landing instructor will teach Instead consult yourself assess what know confident can fly straight level over predetermined path ground can make left right turns changing altitude youve got left right sorted out both coming going should concentrate learning land Tell instructor week Im ready land what its worth offer plan offer students July 1981 29 THE GEORGE M MYERS FLIGHT TRAINING PLAN 1 Straight level flightoutand backlracaerackpatternl As soon student cee ate mote-st-less constant altitude move 2 5-tumsoutandback macnoon doneovera ground teferenoe Irse such roadorfesce regard fotthewied Itteanhes coordination asd automatic nompensation mind drift 3 5pins renoserias need understand get Out spin hefote heoe cheece become frightened third lessoe ussally 4 Loops rells Everybody likes show off aed sum time Its great confidence builder Ahout holf beginners will make Figore 5 insteod leopl doet keow hut rm prepared 5 Traffic patterns landings hase stodeet fly rectaegular peosre left right about 75 feet altitude aed about ttle pot ie left-hand pastern talkthem eto flying lowetand lower Whee theycome eye level reach over end shut down power telling concentrate keeping wings level dv lend withoot difficolty 6 Takeoffs save fur lest keep eut path temptation 7 Ineerted flying student will let try get him inoerted soon possible Some will doing inverted racotracks hefore wooing veto S-turns aed back m delighted student does some folks get theway rotakeoffs landings beforethey will try inverted flying Pooplo different ones work out best start icoerted flyieg earliest denelops yoor mind control 5 Emergency procedares As soon studect can leed reliably start teachieg emergency procedures number procedure rspetniegback hefdatterpos base flown too high andios fardswnwind studeets conticuous dimS takeoff never seem understand fool burns off nose gets light have keep cranking nose-down trim flight progresses As plane climbs higher wied blows stronger Inevitably rho place gets far up solar dowcwind rye student cact figure out way going watch him sod let happen hes good scared take bos tell himihat will diveformyfent Afterdsingaleeptsssrtsut uPeed OOWN ifnecessary aedaleveltvrntonsrtnutcOMlNOfrom GOING put cone down dive aimieg atmyfeet poict suithat iralwaysseemstotakeforevertogetback hecauvetheplane rsbvckrngtbe wind also point out place has show thetopof its wing stir will fly over head Mont students getiho messagethe first time number two procedure feb-handed fping Virtually everyoce fliev Model days two sticks aileroeielevatoroe right stick throttle/rudder left trim place forstrarght aed level flight half throttle demonstrate thetincreasing power results ma climb whilndecreasicgpowerprsducesadescent Nest backtostrarghtand level demonvirain howiodder plus alittleaddedpower produces nice level turns Sack routiun No S racesracks using left-stick Eventually student may perform sin routines leftstick instructor can confident hasnt released another right-handed cripple oc modeling world Whats important about lnft-haedcdflyieg Aileron sewos hingos have Seen known fail ussallyas resslioffluttor can left-handed flying hit have good chance sfgetticg plane down safely injuring anyone Just make both sticks move left/right together Its easy youve practiced itl Maybe youll need tofly Old-Timer Irkethe Piper cub Long wings can make fyrsuch slow aileron responsefrequently adverse yaw high angles attack such during landingthat way pick up low wing hy ose rudder Maybe youll want help nut begroneiwbo has ofihe rovk-bottom-price two-channel radios throttle left rudder right Youll have lot iroshle youre two-listed flier