George M Myers ELECTRONIC STOPWATCH Estes Skyaligner subtitled Transmitter Aligner might lead expect somehow plugs transmitter Taint Magee Molly Jordan used say plug Skyaligner receiver place servo Skyaligner powered flight pack measures ON time control pulse servo WOULD HAVE received usual range numbers displayed 100 200 interpret milli seconds 00100 00200 sec enjoy building electronic kits see photograph went together fast hardly noticed doing Anyone could assemble 30 minutes including time spent reading instructions checking pans worked properly first time plugged Theres nothing adjust can plug read See photo completed unit Current consumption about 8OmA mostly goes light display Lets see use instrument As explained Skyaligner instructions will plug Skyaligner receiver moving servo position another adjusting center time channel transmitter photo Pro-Line trans mitter shows will find necessary potentiometers inside typical transmitter 1970s before NE5044 chip e WRAMs Show-1981 June 81 MA objective set transmitters potenti ometers channels display same time controls trims centered exception Retract channel has Up Down number have NES 044 set centering likely done either lever arm control potentiometer loosening setscrew can move echniquc potentiometer shaft inside control arm trim lever Whatever method objective remains same Step Two alignment process adjust servos center mechanically same driven same control pulse turning system centering control lever trim channel say aileron plugging servos time receivers aileron channel observing center Any servo centers itself differently rest must adjusted either inserting screw driver hex wrench hole output shaft done World Engines Ace example moving potentiometer inside servo case Kraft Servos have multi spline output shafts Airtronics Cox/Sanwa OS usually have no provisons centering other way place output arm wheel shaft case once servos center identically truly inter changeable Assuming transmitter now aligned servos now interchangeable can same thing other systems own will make process swapping compo nents much simpler real payoff Skyaligner comes own super transmitter like Ace Silver Seven can adjust offset control spans set XPO dual rates adjust trim authority mix controls etc reference airplane Getting adjustments right first time matter Fly Change Fly Again until youve got way want Enter Skyaligner Measure what youve got Centers Spans Trims Mixtures Write down Now want use equipment something else go through again want go back developed setup pull out records Skyaligner set up transmitter few easy minutes question bound asked does Skyaligner differ Digital Pulse Meter designed Ken Jesser published RCM kitted Royal Electronics answer uses slightly different components fits smaller box available right now Estes Industries Inc Penrose CO 81240 Surely realize specialty items like kitted batches want have buy its available because its likely long time next batch NEW SUBJECT Some AMA members have following serial FCC Report Continued great impa tience present serial wins prize longest-running article having appeared following issues ModelAviation AMA News section Dec 80 p 68 Intro & Summary Petition RM3525 11/17/78 Jan 81 p 70 Derivation Requirements Mar 81 p 71 Crystal & Oscillator Consider ations Jnn 81 p 80 Raster NBFM Compatibility Other Services Aug81 p 75 Receiver Design Bandwidth & Intermodulation Editors note serial concluded September 1981 issuein AMA News sec tion episode entitled Image Other Considerations information avail able George Myers time wrote column RMcM Much impact scholarly work Mike Gilbertson et al lost furor 28 Model Aviation actual dual-conversion receiver just mockup assembled Royal Electronics 2-channel receiver Litco two-deck 8channel receiver purpose visualizing what next generation RC receiver might like AMA presidential election subsequent runoff election Some criticism voiced against AMA proposal clearly demonstrated report did receive considered attention deserved may Aug 81 installment has generated few letters asking What dual-conversion what does us dual-conversion receiver can best explain what dual-conversion receiver directing consideration typical two-deck receiver such Litco shown lead photo makes good model because board holds components related RF section other holds components related decoder sorts out control pulses sends appropriate servos Now dual-conversion receiver built same way would have three decks Deck number would start antenna contain crystal oscillator corresponding radio channel have selected use would also contain IF filters such incoming RE signal would converted 72whatever MHz 107 MHz second deck would common dual-conversion receivers because would contain 11155 MHz crystal another oscillator IF clean up convert signal 107 MHz 455 KHz some manufacturer could come up integrated circuit task probably everybody would use third deck would decoder deck once again have candidate single IC like NE5045 everyone can use Simple no Based fact two-deck receivers available around $40 considering might small extra charge special components narrow-band receiver could reasonably expect dual-conversion narrow-band receiver will offered about 80 todays dollars Add $20 set transmit receive crystals have idea conversion cost todays channel 50 new ones ICs will probably built PC board words narrow-band stir up almost much emotional upset does exclusivity September 1980 AMA proposed narrowband both transmitter receiver raised storm outrage opportunity read full report could still hasnt published final segment Careful study data June 8 1 issue leads ineluctably conclusion narrow-band transm itter really isnt neces sary AMA Frequency Committee decided amend proposal keep transmitter specifications except fre quency changes suit new channels done July 1981 same data shows narrow-band receivers make lot sense Before get upset about take quick glance walkie-talkie hanging belt local policeman fireman security guard maintenance man etc looking narrow-band dual-conversion receiver friend performance counts buy what need Ive glven hardware view what dualconversion receiver might dis cussion works have engineer ing turn mind refer ARRL Hand book discussion its advantages refer Mike Gilbertsons discussion August 81 issue Simply put works better Glossary IC Integrated Circuita modular unit com bining several electronic functions package IF Intermediate Frequencyin super heterodyne process information impressed radio-frequency separated noise interference converting carrier high radio frequency lower radio frequency passing converted signal through amplifer has very narrow pass-band new frequency called intermediate frequency PC ted Circuitmodern circuits etched out sheet copper has glued sheet supporting material usually phenolic epoxy/fiberglass some form cer amic assembly called printed circuit because mask etching process imposed copper photography ARRL ican Radio Relay Leaguethe offical name Hams Amateur Radio Oper ators Keep letters coming George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 SAFE FLYING IS NO ACCIDENT October1981 29 U Estes Skyaligner Big photo attop shows kitnot parts shouldnttake anyone half hour assemble no adjustments made once its assembled its readyto use Smaller photo left above showstheassembled unit 2/s-in square 718-in thick Theres nothing lookat butthe threQ number-displays George wrapped box ins strip red tape give ita bitof color otherR smallerphotoshowatheencorderboard Georges 10-year-old Pro-Line transmitter arrow marks row potentiometers adjusted aid Skyaligner make centertimes equal six channels George notes rig still going strong
Edition: Model Aviation - 1981/10
Page Numbers: 28, 29
George M Myers ELECTRONIC STOPWATCH Estes Skyaligner subtitled Transmitter Aligner might lead expect somehow plugs transmitter Taint Magee Molly Jordan used say plug Skyaligner receiver place servo Skyaligner powered flight pack measures ON time control pulse servo WOULD HAVE received usual range numbers displayed 100 200 interpret milli seconds 00100 00200 sec enjoy building electronic kits see photograph went together fast hardly noticed doing Anyone could assemble 30 minutes including time spent reading instructions checking pans worked properly first time plugged Theres nothing adjust can plug read See photo completed unit Current consumption about 8OmA mostly goes light display Lets see use instrument As explained Skyaligner instructions will plug Skyaligner receiver moving servo position another adjusting center time channel transmitter photo Pro-Line trans mitter shows will find necessary potentiometers inside typical transmitter 1970s before NE5044 chip e WRAMs Show-1981 June 81 MA objective set transmitters potenti ometers channels display same time controls trims centered exception Retract channel has Up Down number have NES 044 set centering likely done either lever arm control potentiometer loosening setscrew can move echniquc potentiometer shaft inside control arm trim lever Whatever method objective remains same Step Two alignment process adjust servos center mechanically same driven same control pulse turning system centering control lever trim channel say aileron plugging servos time receivers aileron channel observing center Any servo centers itself differently rest must adjusted either inserting screw driver hex wrench hole output shaft done World Engines Ace example moving potentiometer inside servo case Kraft Servos have multi spline output shafts Airtronics Cox/Sanwa OS usually have no provisons centering other way place output arm wheel shaft case once servos center identically truly inter changeable Assuming transmitter now aligned servos now interchangeable can same thing other systems own will make process swapping compo nents much simpler real payoff Skyaligner comes own super transmitter like Ace Silver Seven can adjust offset control spans set XPO dual rates adjust trim authority mix controls etc reference airplane Getting adjustments right first time matter Fly Change Fly Again until youve got way want Enter Skyaligner Measure what youve got Centers Spans Trims Mixtures Write down Now want use equipment something else go through again want go back developed setup pull out records Skyaligner set up transmitter few easy minutes question bound asked does Skyaligner differ Digital Pulse Meter designed Ken Jesser published RCM kitted Royal Electronics answer uses slightly different components fits smaller box available right now Estes Industries Inc Penrose CO 81240 Surely realize specialty items like kitted batches want have buy its available because its likely long time next batch NEW SUBJECT Some AMA members have following serial FCC Report Continued great impa tience present serial wins prize longest-running article having appeared following issues ModelAviation AMA News section Dec 80 p 68 Intro & Summary Petition RM3525 11/17/78 Jan 81 p 70 Derivation Requirements Mar 81 p 71 Crystal & Oscillator Consider ations Jnn 81 p 80 Raster NBFM Compatibility Other Services Aug81 p 75 Receiver Design Bandwidth & Intermodulation Editors note serial concluded September 1981 issuein AMA News sec tion episode entitled Image Other Considerations information avail able George Myers time wrote column RMcM Much impact scholarly work Mike Gilbertson et al lost furor 28 Model Aviation actual dual-conversion receiver just mockup assembled Royal Electronics 2-channel receiver Litco two-deck 8channel receiver purpose visualizing what next generation RC receiver might like AMA presidential election subsequent runoff election Some criticism voiced against AMA proposal clearly demonstrated report did receive considered attention deserved may Aug 81 installment has generated few letters asking What dual-conversion what does us dual-conversion receiver can best explain what dual-conversion receiver directing consideration typical two-deck receiver such Litco shown lead photo makes good model because board holds components related RF section other holds components related decoder sorts out control pulses sends appropriate servos Now dual-conversion receiver built same way would have three decks Deck number would start antenna contain crystal oscillator corresponding radio channel have selected use would also contain IF filters such incoming RE signal would converted 72whatever MHz 107 MHz second deck would common dual-conversion receivers because would contain 11155 MHz crystal another oscillator IF clean up convert signal 107 MHz 455 KHz some manufacturer could come up integrated circuit task probably everybody would use third deck would decoder deck once again have candidate single IC like NE5045 everyone can use Simple no Based fact two-deck receivers available around $40 considering might small extra charge special components narrow-band receiver could reasonably expect dual-conversion narrow-band receiver will offered about 80 todays dollars Add $20 set transmit receive crystals have idea conversion cost todays channel 50 new ones ICs will probably built PC board words narrow-band stir up almost much emotional upset does exclusivity September 1980 AMA proposed narrowband both transmitter receiver raised storm outrage opportunity read full report could still hasnt published final segment Careful study data June 8 1 issue leads ineluctably conclusion narrow-band transm itter really isnt neces sary AMA Frequency Committee decided amend proposal keep transmitter specifications except fre quency changes suit new channels done July 1981 same data shows narrow-band receivers make lot sense Before get upset about take quick glance walkie-talkie hanging belt local policeman fireman security guard maintenance man etc looking narrow-band dual-conversion receiver friend performance counts buy what need Ive glven hardware view what dualconversion receiver might dis cussion works have engineer ing turn mind refer ARRL Hand book discussion its advantages refer Mike Gilbertsons discussion August 81 issue Simply put works better Glossary IC Integrated Circuita modular unit com bining several electronic functions package IF Intermediate Frequencyin super heterodyne process information impressed radio-frequency separated noise interference converting carrier high radio frequency lower radio frequency passing converted signal through amplifer has very narrow pass-band new frequency called intermediate frequency PC ted Circuitmodern circuits etched out sheet copper has glued sheet supporting material usually phenolic epoxy/fiberglass some form cer amic assembly called printed circuit because mask etching process imposed copper photography ARRL ican Radio Relay Leaguethe offical name Hams Amateur Radio Oper ators Keep letters coming George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 SAFE FLYING IS NO ACCIDENT October1981 29 U Estes Skyaligner Big photo attop shows kitnot parts shouldnttake anyone half hour assemble no adjustments made once its assembled its readyto use Smaller photo left above showstheassembled unit 2/s-in square 718-in thick Theres nothing lookat butthe threQ number-displays George wrapped box ins strip red tape give ita bitof color otherR smallerphotoshowatheencorderboard Georges 10-year-old Pro-Line transmitter arrow marks row potentiometers adjusted aid Skyaligner make centertimes equal six channels George notes rig still going strong