George M Mye D Radio Thchnique ABSTRACT Reader letters discussing future RC scene YOUR TURN need membership discussion important subject affect hobby years ie best use 50 channels assigned exclusively RC aircraft have re ceived some thoughtful reader letters should shared Lets begin Heres first Thomas Wilk Trea surer Duluth Radio Control Club 212 W Aus tin St Duluth MN 55803 Re August 1988 column using OWBAMs OWBAM old wideband AM radios Ed club 60 members about 125 radios doubt 25 narrow band have yet seen lower frequencies nor have seen PCM heard anything good about 1983 gave OW BAMs eight years wear Out still being advertised sold bought Futaba Con quest AM last yearFutaba says will able get 1991 Rx got Silver sticker Toledo Today stopped local hobby shop about six RC sets stock narrow band manufacturers know 1991 will narrow band arent maldng available right now As read ads Aristo-Craft World Engines claim 1991 specs others admit meet 1991 specs lower channels bad members buy sets Channel 12they now told can used NB will have converted upper band asked hobby shop about radio RC22 says yet available Whats holdup manufacturers since 1983 get ready can club explain new member has just bought system summer will have replaced 1991 Will dealer manufacturer buy back take tradein new set tell new people buy Aristo-Craft and/or World Engines Judging writing MA AMA doing modelers service pro moting hobby insisting 1991 equipment available now Myers comment oy report news dont try manage hobby industry have modeler since about 1950 ort flier ldom compete club fun-fl ys have club treasurer since 1980 am charter member club started Fifties club feels AMA RC industry doing part resolve problems Toledo told AMA VP clubs can decide use upper even-numbered channels thereby continue use present equipment Now AMA seem saying we lose insurance right section dealing OWBAMs RC boats has deleted GMM Some club members saying hell AMAwell drop charter fly own rules have club member AMA AVP says AMA hasnt kept him informed Ill still continue read columns MA see what happens Mr Wilks present concerns ad dressed Bob Aberle FC chairman open letter Ted White AMA VP written time much debate about future use RC frequencies printed AMA News p 78 June 1981 issue Model Aviation Note date Mr Wilk asks Bob wrote bottom first column page 79 s present RC systems would become obsolete after 10-year period essentially consensus FC time based what knew could reasonably predict future time AMA wasnt selfinsured insurance didnt depend Phase-In Plan Bob said lot cant repeat whole letter because alone takes space am allowed column recommend obtain read complete text shows todays problems anticipated dealt beginning second letter addresses some Mr Wilks concerns comes Robert Morris 104 An dover Circle Oak Ridge TN 37830 have ab stracted following good book radio receiver design Solid State Design Radio Amareur American Radio Relay League Newington CT easy-to-read book people modest background electronics book has good explanations about receiver de left Airtronics Vanguard PCM 416-channel receiver Part No 92965 has recently certified meet AMA 1991 Guide lines narrow-band operation basic receiver portion item same Airtonics PIN 92985 8-channel PCM P/N 92785 8-channel FM receivers right see same unit case removed Top deck decoder bottom deck mostly hidden basic portion receiver Crystal white plastic hat upper left corner 32 Model Aviation 70 Froehlkh Farm Rd Hkksville NY 11901 early 1983 Kraft 8-channel narrowband dual-conversion crystal-filtered FM re ceiver Top 1988 High-Tec 7channel narrow-band dual-conversion crystal-filtered FM receiver Bottom As can see newer receiver smaller lighter its also cheaper Progress RC being made speak sign Most problems have re ceivers solved about 15-20 years ago trick has make small cheap interesting note World En gines High-Tec receiver follows rule double-balanced mixer followed decent filterthat considered way go re ceivers seeing arent new designs rather redesigns think griping man ufacturers cost starting design scratch major techni cal challenge Myers comment response Robert Mar t-is last comment long expensive path between paper design properly func tioning production receivers Some may have forgotten Kraft produced 1991 receiver spring 1983 four times price three times volume todays 1991 receiv ers some todays receivers show better perfonnance third letter comes Robert W Ken nedy Safety Officer Meroke Radio Control Club Inc AMA charter 458 534 Benito St East Meadow NY 11554 Since articles new frequency re quirements have published change antenna flags has accomplished comply new [AMA rule book] require ments aspects actions have caused fliers aggravated refer ence minutes AMA Executive Coun cil meeting published February 1988 edi tion AM4 News p 110 bottom now ap pears requirements absolute Myers comment Im sure what abso lute means Everything about AMA volun tary including paying dues following AM4 rule book choose pay dues won t follow rules can t benefit AMA insurance other services 1991 requirements transmitter re ceiver performance probably advantage large national FM contests se vere disadvantage average RC modeler Can imagine entire AMA membership ap pearing contest have transmitters receivers tested plausible method sport flier return equipment four systems manufac turer test updating workload would beyond belief use persons associated manufacturer would questionable eg cal ibration test equipment utilized certifi cation ability avallabiity replacement ma terial time required cost comments some writers reference old wideband AM radios justified club recently available use meeting spectrum analyzer frequency count er signal generator Futaba AM trans mitters tested club would comply 1991 operating requirements much would charge use equipment has price tag neighborhood $80000 Myers comment Note particular Eu taba AM transmitters THAT THEY TESTED rate Gold stickers Don t expect Futaba AM transmitter suggest consider limiting narrow-band channels RC12-RC34 wideband channels RC38-RC56 am well aware great deal effort has performed meetings between AMA FCC However now Continued page 111 HANDS OFF EspccidIIy Lced TdperEd CUT III unique divice cutting high qualitj foam wing cores HAIIDS 0FF cuttinq both sides same time Available hardware package &jou assemble jour owra boardSpecittj 646~8or 6O ordelrq size maIJ changed anjtime Max Chord 18 standard er chords available j assemble Requiines 24 Volt Variable Output Power 5uppltj DEALERS WANTED Hands Orf Cut Il ware package . $8750 S&H 24 Volt Variable output power supphj$6250 S&H. VIDEO FOAM SHOP Foani Shop Part One Cutting Foam Wings. hour long cuts made using HANDS OFF CUT II V1-IS OnlU $2995 includes 5&H lower 48 Foam Shop Pert To Cutting Foam Fuselages. hour long cuts made using simple bow V115 Onlij $2995 includes S&H lower 48 SUPER BONDCONTACT ADHESIYE best contact cement have ever used Onlu $375 8 oz squeeze bottle Enough 1400 sq inch wing Add $200 S&H lower 48 1/0 inch Phenolic Board Tempiajes 4 X 36 ft Only $500 5&t-I NOR-RAY PRODUCTS INC 5008 Sandbeach Road Wichita Pails TX 76310 Tel 8171 692-4475 HAS MOVED INTO LARGER QUARTERS 21658 Cloud Way Hayward CA 94545 h CAL 415 783-4868 Out CAL 800 482-8663 December 1988 33 proud announce TATONE PRODUCTS CORPORATION has acquired CB ASSOCIATES PRESIDENT LTATONE PRODUCTS CORP Radio Technique/Myers Continued page 33 problems evident considered signif icant time comparison objec tive obtaining additional frequencies reference individuals quali fied perform tests transmitters receivers Will procedure approved FCC b will control supervise practic es persons c What packaging shipping methods used d What requirements placed upon people e Will labels placed upon transmit ters and/or receivers standardized receiver subjected major crash receiver may off frequency yet perform control placed upon previ ously accepted equipment Will AMA allow equipment assem bled repaired owner Will AMA re quire periodic tests transmitters receivers over years reference AMA Membership Man ual p 9 AMA Frequency Committee Recom mendations para 1 AMA will assume responsibility enforcement FCC regula tions will Clubs cannot afford test equipment FCC assuredly cannot pro vide enforcement other manufactur ing level good example Citizens Band ran wild very likely questions shall arise before afier implementa tion 1991 requirements What must remembered hobby participants average mod eler limited both funds time usually complies regulations imposed equipment becomes burden enjoy ment hobby will lost 1991 frequency requirements will force RC participants pay additional fees convert existing equipment buy new equipment appears trying obtain additional frequencies fliers contest field sport fliers paying right fly Myers comment AMA sought interference free frequencies replace shared frequen cies becoming unusable sport competition fliers alike due high-powered interference sharers exclusive new channels got rid high-powered sharers would appreciate presentation questions Frequency Committee re quest reply soon possible appreciation committees ef forts Myers comment copy Mr Kennedys let ter went Fred Marks FC chairman re ply went Mr Kennedy day letter received done expense Im paid AMA service nobody re imburses time materials reproduction cosrt stamp money either Pu Isemaster/Stuecker Continued page 40 vos dont seem center well some other less-expensive standard ser vos own tests see yourself servos want use Pat tern ship Option #4 Cycle SO Microsecond Steps option checks linearity servo over its entire operating range What linearity servo truly linear will move same number degrees time pulse length incremented 50 microseconds Most servos operate over one-millisecond range servo should move 20 equal-sized steps bottom limit top limit using option See Figure #1 graph ideal servo response Option #5 Reset Upper Lower Lim its software defaults standard range pulse lengths used Ace RC others millisecond 1000 mi croseconds lower limit two mil liseconds 2000 microseconds up per limit Futaba AM series however uses 81 milliseconds 181 milliseconds system limits 1310 millisec Continued page 141 December 1988 111 Editors note RC industry has begun offer RC equipment narrow band has certified independent testing laboratories FCC type acceptance meeting AMAs Guidelines 1991 oper ation Model Aviation its AMA News sec tion now regularly publishing lists such equipment first such list appeared October 1988 issue Thus ques tions being asked renders quoted George M Myers column being swered listing RMcM
Edition: Model Aviation - 1988/12
Page Numbers: 32, 33, 111
George M Mye D Radio Thchnique ABSTRACT Reader letters discussing future RC scene YOUR TURN need membership discussion important subject affect hobby years ie best use 50 channels assigned exclusively RC aircraft have re ceived some thoughtful reader letters should shared Lets begin Heres first Thomas Wilk Trea surer Duluth Radio Control Club 212 W Aus tin St Duluth MN 55803 Re August 1988 column using OWBAMs OWBAM old wideband AM radios Ed club 60 members about 125 radios doubt 25 narrow band have yet seen lower frequencies nor have seen PCM heard anything good about 1983 gave OW BAMs eight years wear Out still being advertised sold bought Futaba Con quest AM last yearFutaba says will able get 1991 Rx got Silver sticker Toledo Today stopped local hobby shop about six RC sets stock narrow band manufacturers know 1991 will narrow band arent maldng available right now As read ads Aristo-Craft World Engines claim 1991 specs others admit meet 1991 specs lower channels bad members buy sets Channel 12they now told can used NB will have converted upper band asked hobby shop about radio RC22 says yet available Whats holdup manufacturers since 1983 get ready can club explain new member has just bought system summer will have replaced 1991 Will dealer manufacturer buy back take tradein new set tell new people buy Aristo-Craft and/or World Engines Judging writing MA AMA doing modelers service pro moting hobby insisting 1991 equipment available now Myers comment oy report news dont try manage hobby industry have modeler since about 1950 ort flier ldom compete club fun-fl ys have club treasurer since 1980 am charter member club started Fifties club feels AMA RC industry doing part resolve problems Toledo told AMA VP clubs can decide use upper even-numbered channels thereby continue use present equipment Now AMA seem saying we lose insurance right section dealing OWBAMs RC boats has deleted GMM Some club members saying hell AMAwell drop charter fly own rules have club member AMA AVP says AMA hasnt kept him informed Ill still continue read columns MA see what happens Mr Wilks present concerns ad dressed Bob Aberle FC chairman open letter Ted White AMA VP written time much debate about future use RC frequencies printed AMA News p 78 June 1981 issue Model Aviation Note date Mr Wilk asks Bob wrote bottom first column page 79 s present RC systems would become obsolete after 10-year period essentially consensus FC time based what knew could reasonably predict future time AMA wasnt selfinsured insurance didnt depend Phase-In Plan Bob said lot cant repeat whole letter because alone takes space am allowed column recommend obtain read complete text shows todays problems anticipated dealt beginning second letter addresses some Mr Wilks concerns comes Robert Morris 104 An dover Circle Oak Ridge TN 37830 have ab stracted following good book radio receiver design Solid State Design Radio Amareur American Radio Relay League Newington CT easy-to-read book people modest background electronics book has good explanations about receiver de left Airtronics Vanguard PCM 416-channel receiver Part No 92965 has recently certified meet AMA 1991 Guide lines narrow-band operation basic receiver portion item same Airtonics PIN 92985 8-channel PCM P/N 92785 8-channel FM receivers right see same unit case removed Top deck decoder bottom deck mostly hidden basic portion receiver Crystal white plastic hat upper left corner 32 Model Aviation 70 Froehlkh Farm Rd Hkksville NY 11901 early 1983 Kraft 8-channel narrowband dual-conversion crystal-filtered FM re ceiver Top 1988 High-Tec 7channel narrow-band dual-conversion crystal-filtered FM receiver Bottom As can see newer receiver smaller lighter its also cheaper Progress RC being made speak sign Most problems have re ceivers solved about 15-20 years ago trick has make small cheap interesting note World En gines High-Tec receiver follows rule double-balanced mixer followed decent filterthat considered way go re ceivers seeing arent new designs rather redesigns think griping man ufacturers cost starting design scratch major techni cal challenge Myers comment response Robert Mar t-is last comment long expensive path between paper design properly func tioning production receivers Some may have forgotten Kraft produced 1991 receiver spring 1983 four times price three times volume todays 1991 receiv ers some todays receivers show better perfonnance third letter comes Robert W Ken nedy Safety Officer Meroke Radio Control Club Inc AMA charter 458 534 Benito St East Meadow NY 11554 Since articles new frequency re quirements have published change antenna flags has accomplished comply new [AMA rule book] require ments aspects actions have caused fliers aggravated refer ence minutes AMA Executive Coun cil meeting published February 1988 edi tion AM4 News p 110 bottom now ap pears requirements absolute Myers comment Im sure what abso lute means Everything about AMA volun tary including paying dues following AM4 rule book choose pay dues won t follow rules can t benefit AMA insurance other services 1991 requirements transmitter re ceiver performance probably advantage large national FM contests se vere disadvantage average RC modeler Can imagine entire AMA membership ap pearing contest have transmitters receivers tested plausible method sport flier return equipment four systems manufac turer test updating workload would beyond belief use persons associated manufacturer would questionable eg cal ibration test equipment utilized certifi cation ability avallabiity replacement ma terial time required cost comments some writers reference old wideband AM radios justified club recently available use meeting spectrum analyzer frequency count er signal generator Futaba AM trans mitters tested club would comply 1991 operating requirements much would charge use equipment has price tag neighborhood $80000 Myers comment Note particular Eu taba AM transmitters THAT THEY TESTED rate Gold stickers Don t expect Futaba AM transmitter suggest consider limiting narrow-band channels RC12-RC34 wideband channels RC38-RC56 am well aware great deal effort has performed meetings between AMA FCC However now Continued page 111 HANDS OFF EspccidIIy Lced TdperEd CUT III unique divice cutting high qualitj foam wing cores HAIIDS 0FF cuttinq both sides same time Available hardware package &jou assemble jour owra boardSpecittj 646~8or 6O ordelrq size maIJ changed anjtime Max Chord 18 standard er chords available j assemble Requiines 24 Volt Variable Output Power 5uppltj DEALERS WANTED Hands Orf Cut Il ware package . $8750 S&H 24 Volt Variable output power supphj$6250 S&H. VIDEO FOAM SHOP Foani Shop Part One Cutting Foam Wings. hour long cuts made using HANDS OFF CUT II V1-IS OnlU $2995 includes 5&H lower 48 Foam Shop Pert To Cutting Foam Fuselages. hour long cuts made using simple bow V115 Onlij $2995 includes S&H lower 48 SUPER BONDCONTACT ADHESIYE best contact cement have ever used Onlu $375 8 oz squeeze bottle Enough 1400 sq inch wing Add $200 S&H lower 48 1/0 inch Phenolic Board Tempiajes 4 X 36 ft Only $500 5&t-I NOR-RAY PRODUCTS INC 5008 Sandbeach Road Wichita Pails TX 76310 Tel 8171 692-4475 HAS MOVED INTO LARGER QUARTERS 21658 Cloud Way Hayward CA 94545 h CAL 415 783-4868 Out CAL 800 482-8663 December 1988 33 proud announce TATONE PRODUCTS CORPORATION has acquired CB ASSOCIATES PRESIDENT LTATONE PRODUCTS CORP Radio Technique/Myers Continued page 33 problems evident considered signif icant time comparison objec tive obtaining additional frequencies reference individuals quali fied perform tests transmitters receivers Will procedure approved FCC b will control supervise practic es persons c What packaging shipping methods used d What requirements placed upon people e Will labels placed upon transmit ters and/or receivers standardized receiver subjected major crash receiver may off frequency yet perform control placed upon previ ously accepted equipment Will AMA allow equipment assem bled repaired owner Will AMA re quire periodic tests transmitters receivers over years reference AMA Membership Man ual p 9 AMA Frequency Committee Recom mendations para 1 AMA will assume responsibility enforcement FCC regula tions will Clubs cannot afford test equipment FCC assuredly cannot pro vide enforcement other manufactur ing level good example Citizens Band ran wild very likely questions shall arise before afier implementa tion 1991 requirements What must remembered hobby participants average mod eler limited both funds time usually complies regulations imposed equipment becomes burden enjoy ment hobby will lost 1991 frequency requirements will force RC participants pay additional fees convert existing equipment buy new equipment appears trying obtain additional frequencies fliers contest field sport fliers paying right fly Myers comment AMA sought interference free frequencies replace shared frequen cies becoming unusable sport competition fliers alike due high-powered interference sharers exclusive new channels got rid high-powered sharers would appreciate presentation questions Frequency Committee re quest reply soon possible appreciation committees ef forts Myers comment copy Mr Kennedys let ter went Fred Marks FC chairman re ply went Mr Kennedy day letter received done expense Im paid AMA service nobody re imburses time materials reproduction cosrt stamp money either Pu Isemaster/Stuecker Continued page 40 vos dont seem center well some other less-expensive standard ser vos own tests see yourself servos want use Pat tern ship Option #4 Cycle SO Microsecond Steps option checks linearity servo over its entire operating range What linearity servo truly linear will move same number degrees time pulse length incremented 50 microseconds Most servos operate over one-millisecond range servo should move 20 equal-sized steps bottom limit top limit using option See Figure #1 graph ideal servo response Option #5 Reset Upper Lower Lim its software defaults standard range pulse lengths used Ace RC others millisecond 1000 mi croseconds lower limit two mil liseconds 2000 microseconds up per limit Futaba AM series however uses 81 milliseconds 181 milliseconds system limits 1310 millisec Continued page 141 December 1988 111 Editors note RC industry has begun offer RC equipment narrow band has certified independent testing laboratories FCC type acceptance meeting AMAs Guidelines 1991 oper ation Model Aviation its AMA News sec tion now regularly publishing lists such equipment first such list appeared October 1988 issue Thus ques tions being asked renders quoted George M Myers column being swered listing RMcM
Edition: Model Aviation - 1988/12
Page Numbers: 32, 33, 111
George M Mye D Radio Thchnique ABSTRACT Reader letters discussing future RC scene YOUR TURN need membership discussion important subject affect hobby years ie best use 50 channels assigned exclusively RC aircraft have re ceived some thoughtful reader letters should shared Lets begin Heres first Thomas Wilk Trea surer Duluth Radio Control Club 212 W Aus tin St Duluth MN 55803 Re August 1988 column using OWBAMs OWBAM old wideband AM radios Ed club 60 members about 125 radios doubt 25 narrow band have yet seen lower frequencies nor have seen PCM heard anything good about 1983 gave OW BAMs eight years wear Out still being advertised sold bought Futaba Con quest AM last yearFutaba says will able get 1991 Rx got Silver sticker Toledo Today stopped local hobby shop about six RC sets stock narrow band manufacturers know 1991 will narrow band arent maldng available right now As read ads Aristo-Craft World Engines claim 1991 specs others admit meet 1991 specs lower channels bad members buy sets Channel 12they now told can used NB will have converted upper band asked hobby shop about radio RC22 says yet available Whats holdup manufacturers since 1983 get ready can club explain new member has just bought system summer will have replaced 1991 Will dealer manufacturer buy back take tradein new set tell new people buy Aristo-Craft and/or World Engines Judging writing MA AMA doing modelers service pro moting hobby insisting 1991 equipment available now Myers comment oy report news dont try manage hobby industry have modeler since about 1950 ort flier ldom compete club fun-fl ys have club treasurer since 1980 am charter member club started Fifties club feels AMA RC industry doing part resolve problems Toledo told AMA VP clubs can decide use upper even-numbered channels thereby continue use present equipment Now AMA seem saying we lose insurance right section dealing OWBAMs RC boats has deleted GMM Some club members saying hell AMAwell drop charter fly own rules have club member AMA AVP says AMA hasnt kept him informed Ill still continue read columns MA see what happens Mr Wilks present concerns ad dressed Bob Aberle FC chairman open letter Ted White AMA VP written time much debate about future use RC frequencies printed AMA News p 78 June 1981 issue Model Aviation Note date Mr Wilk asks Bob wrote bottom first column page 79 s present RC systems would become obsolete after 10-year period essentially consensus FC time based what knew could reasonably predict future time AMA wasnt selfinsured insurance didnt depend Phase-In Plan Bob said lot cant repeat whole letter because alone takes space am allowed column recommend obtain read complete text shows todays problems anticipated dealt beginning second letter addresses some Mr Wilks concerns comes Robert Morris 104 An dover Circle Oak Ridge TN 37830 have ab stracted following good book radio receiver design Solid State Design Radio Amareur American Radio Relay League Newington CT easy-to-read book people modest background electronics book has good explanations about receiver de left Airtronics Vanguard PCM 416-channel receiver Part No 92965 has recently certified meet AMA 1991 Guide lines narrow-band operation basic receiver portion item same Airtonics PIN 92985 8-channel PCM P/N 92785 8-channel FM receivers right see same unit case removed Top deck decoder bottom deck mostly hidden basic portion receiver Crystal white plastic hat upper left corner 32 Model Aviation 70 Froehlkh Farm Rd Hkksville NY 11901 early 1983 Kraft 8-channel narrowband dual-conversion crystal-filtered FM re ceiver Top 1988 High-Tec 7channel narrow-band dual-conversion crystal-filtered FM receiver Bottom As can see newer receiver smaller lighter its also cheaper Progress RC being made speak sign Most problems have re ceivers solved about 15-20 years ago trick has make small cheap interesting note World En gines High-Tec receiver follows rule double-balanced mixer followed decent filterthat considered way go re ceivers seeing arent new designs rather redesigns think griping man ufacturers cost starting design scratch major techni cal challenge Myers comment response Robert Mar t-is last comment long expensive path between paper design properly func tioning production receivers Some may have forgotten Kraft produced 1991 receiver spring 1983 four times price three times volume todays 1991 receiv ers some todays receivers show better perfonnance third letter comes Robert W Ken nedy Safety Officer Meroke Radio Control Club Inc AMA charter 458 534 Benito St East Meadow NY 11554 Since articles new frequency re quirements have published change antenna flags has accomplished comply new [AMA rule book] require ments aspects actions have caused fliers aggravated refer ence minutes AMA Executive Coun cil meeting published February 1988 edi tion AM4 News p 110 bottom now ap pears requirements absolute Myers comment Im sure what abso lute means Everything about AMA volun tary including paying dues following AM4 rule book choose pay dues won t follow rules can t benefit AMA insurance other services 1991 requirements transmitter re ceiver performance probably advantage large national FM contests se vere disadvantage average RC modeler Can imagine entire AMA membership ap pearing contest have transmitters receivers tested plausible method sport flier return equipment four systems manufac turer test updating workload would beyond belief use persons associated manufacturer would questionable eg cal ibration test equipment utilized certifi cation ability avallabiity replacement ma terial time required cost comments some writers reference old wideband AM radios justified club recently available use meeting spectrum analyzer frequency count er signal generator Futaba AM trans mitters tested club would comply 1991 operating requirements much would charge use equipment has price tag neighborhood $80000 Myers comment Note particular Eu taba AM transmitters THAT THEY TESTED rate Gold stickers Don t expect Futaba AM transmitter suggest consider limiting narrow-band channels RC12-RC34 wideband channels RC38-RC56 am well aware great deal effort has performed meetings between AMA FCC However now Continued page 111 HANDS OFF EspccidIIy Lced TdperEd CUT III unique divice cutting high qualitj foam wing cores HAIIDS 0FF cuttinq both sides same time Available hardware package &jou assemble jour owra boardSpecittj 646~8or 6O ordelrq size maIJ changed anjtime Max Chord 18 standard er chords available j assemble Requiines 24 Volt Variable Output Power 5uppltj DEALERS WANTED Hands Orf Cut Il ware package . $8750 S&H 24 Volt Variable output power supphj$6250 S&H. VIDEO FOAM SHOP Foani Shop Part One Cutting Foam Wings. hour long cuts made using HANDS OFF CUT II V1-IS OnlU $2995 includes 5&H lower 48 Foam Shop Pert To Cutting Foam Fuselages. hour long cuts made using simple bow V115 Onlij $2995 includes S&H lower 48 SUPER BONDCONTACT ADHESIYE best contact cement have ever used Onlu $375 8 oz squeeze bottle Enough 1400 sq inch wing Add $200 S&H lower 48 1/0 inch Phenolic Board Tempiajes 4 X 36 ft Only $500 5&t-I NOR-RAY PRODUCTS INC 5008 Sandbeach Road Wichita Pails TX 76310 Tel 8171 692-4475 HAS MOVED INTO LARGER QUARTERS 21658 Cloud Way Hayward CA 94545 h CAL 415 783-4868 Out CAL 800 482-8663 December 1988 33 proud announce TATONE PRODUCTS CORPORATION has acquired CB ASSOCIATES PRESIDENT LTATONE PRODUCTS CORP Radio Technique/Myers Continued page 33 problems evident considered signif icant time comparison objec tive obtaining additional frequencies reference individuals quali fied perform tests transmitters receivers Will procedure approved FCC b will control supervise practic es persons c What packaging shipping methods used d What requirements placed upon people e Will labels placed upon transmit ters and/or receivers standardized receiver subjected major crash receiver may off frequency yet perform control placed upon previ ously accepted equipment Will AMA allow equipment assem bled repaired owner Will AMA re quire periodic tests transmitters receivers over years reference AMA Membership Man ual p 9 AMA Frequency Committee Recom mendations para 1 AMA will assume responsibility enforcement FCC regula tions will Clubs cannot afford test equipment FCC assuredly cannot pro vide enforcement other manufactur ing level good example Citizens Band ran wild very likely questions shall arise before afier implementa tion 1991 requirements What must remembered hobby participants average mod eler limited both funds time usually complies regulations imposed equipment becomes burden enjoy ment hobby will lost 1991 frequency requirements will force RC participants pay additional fees convert existing equipment buy new equipment appears trying obtain additional frequencies fliers contest field sport fliers paying right fly Myers comment AMA sought interference free frequencies replace shared frequen cies becoming unusable sport competition fliers alike due high-powered interference sharers exclusive new channels got rid high-powered sharers would appreciate presentation questions Frequency Committee re quest reply soon possible appreciation committees ef forts Myers comment copy Mr Kennedys let ter went Fred Marks FC chairman re ply went Mr Kennedy day letter received done expense Im paid AMA service nobody re imburses time materials reproduction cosrt stamp money either Pu Isemaster/Stuecker Continued page 40 vos dont seem center well some other less-expensive standard ser vos own tests see yourself servos want use Pat tern ship Option #4 Cycle SO Microsecond Steps option checks linearity servo over its entire operating range What linearity servo truly linear will move same number degrees time pulse length incremented 50 microseconds Most servos operate over one-millisecond range servo should move 20 equal-sized steps bottom limit top limit using option See Figure #1 graph ideal servo response Option #5 Reset Upper Lower Lim its software defaults standard range pulse lengths used Ace RC others millisecond 1000 mi croseconds lower limit two mil liseconds 2000 microseconds up per limit Futaba AM series however uses 81 milliseconds 181 milliseconds system limits 1310 millisec Continued page 141 December 1988 111 Editors note RC industry has begun offer RC equipment narrow band has certified independent testing laboratories FCC type acceptance meeting AMAs Guidelines 1991 oper ation Model Aviation its AMA News sec tion now regularly publishing lists such equipment first such list appeared October 1988 issue Thus ques tions being asked renders quoted George M Myers column being swered listing RMcM