U Bob Underwood AS WE DROP new year winter months long line swap-shop events seems prudent pass along some thoughts regarding radio systems Perhaps little history would help discussion 1982 present set 72 MHZ frequencies assigned model airplane use similar set 75 MHz frequencies placed service surface use seven frequencies formerly used modelers shared commercial users grandfathered five years formally phased out March 1987 frequencies 72080 72160 72240 72320 72400 72960 75640 MHz use frequencies illegal models time should understood assigned commercial users such activities high-powered pagers etc Furthermore use frequencies AMA members violation Academys Safety Code 1991 present 72 MHz model frequencies phased service Additionally Academy working conjunction FCC Radio Control Manufacturers Association RCMA promulgated guidelines created socalled narrowband transmitters receivers program narrowband older equipment put place along identification program transmitters manufactured modified narrowband specifications identified gold sticker narrowband specifications became requirement manufacturers gold sticker program gradually phased out Any transmitter purchased since March 1 1993 required law narrowband Note receivers have mentioned relative FCC regulations phase-in stickers what-have-you simplistic form FCC concerned about what goes airnot what taken out control RF Radio Frequency emissions attempt make system work receiver use has poor selectivity causes problems operating model properly thats operational problem Granted poor receiver can create safety issue end Academy promulgated equipment guidelines included receivers Again industry voluntarily followed guidelines system works little year now March 1 1998 older wideband transmitters will no longer legal FCC regulation Academy will work helping modelers comply regulation no like regulation exists receivers should understood continuing operate older wideband receivers creates considerable risk interference resulting crashes receiver regulation will occur 1999 deals receiver emissions basically affects equipment manufacturer receivers manufactured until 1999 date legal grandfathered forever Now NewComer does affect you purchasing new radio equipment doesnt What being sold now has sold past several years meets FCC regulations should cause no problem However elect purchase used equipment A little year now March 1 1998 older wideband transmitters will no longer legal FCC regulation factors discussed need considered snap decision swap shop may result problem Some guidelines may help 1 Is brand offered still being sold serviced 2 If manufactured before 1993 does transmitter have gold RCMAIAMA sticker 3 If #2 yes ask whether narrowband manufacture updated later time 4 Is receiver narrowband older updated systems will utilize newer aftermarket receiver Check see receiver states narrowband aware some very early ones marginal 5 Ask whether system AM FM PCM PPM AM check see receiver dual conversion offers better interference rejection fine proceed cautionespecially receiver doesnt say narrowband its FM PCM PPM should have problem being narrowband system Note manufacturer uses term ABC&W denotes system fully meets guidelines may technically said dual conversion 6 Ask whether system has used regularly charged regularly 7 Systems 27 MHz legal operate airplanes surface use recommended airplanes because potential interference CB operations subject narrowband requirement 8 Do purchase operate unit amateur band Ham50 53 MHz unless possess valid Amateur license Ham check see club joining has properly licensed individual can instruct Operation equipment 50 53 MHz unlicensed individual legal 1980 ruling FCC stated nonlicensed individual may operate two-way communication equipment immediate supervision licensed individual same condition does exist radio control operation 9 Read radio section Membership Manual explains complicated issues earlier column mused about type equipment buy two-stick single-stick Mode 1 Mode II number channels AM FM PCM . on Rather repeat lets pass along some general thoughts guide thinking 1 Make certain mode considering something club instructors fly Mode II typical found far Single-stick equipment found entry level stuff very left handed may find Mode comfortable Check out differences 2 Remember radio investment can serve years cost difference between basic four-channel radio four servos upgraded sixchannel system four servos slight Consider future can always buy extra servos later want functions model 3 Check area determine specific frequencies seem problem some cases may myth However some communities flying sites especially large metropolitan areasmay have interference problem because close proximity high-powered pager Ask around 4 Beware expert states 54 Model Aviation waytogois . brandto buy ten such person suffers trouble cant see forest trees Change pace September 24 did second live satellite electronic field trip Museum Muncie What blast discussed four basic elements flight lift thrust drag gravity control forces elevator aileron rudder thrust questions students studio well called live great elements made fun presence Orville Wright aka Charlie Bauer District VI Vice President complete bike bowler long coat Working Christi Meredith Indiana Academy freewheeling trio made 50 minutes fly pun intended Copies tape should available time read call details As write hand packing bag second trip Muncie present program lab school working 5th-7th-grade kids project Aviation Feats Records will done via split screen kids have working presentations answering questions about three important aviation events 1927 Lindberghs solo transatlantic flight 1947 X-1 broke sound barrier 1986 Voyager around-the-world flight will moderate discussion will discover whether found information answers some very interesting questions posed concerning flights well points ponder about records aviation general later News Change AMA West wife wont call office home has moved reduced schedule least thats basic plan will still preparing column other activities Model Aviation will still part Education Committee several others will still represent AMA trade showsstill being available resource needed biggest difference will come regarding manning infernal phone 8 5 isnt suggest wont available may get back situation Actually planned just retire encouraged continue some activity part-time basis Its flattering feel needed Rae pleased can ease personnel burden regular Headquarters staff attending shows etc other hand Ive looked some models just have build age 65 Id better get So-o-o see us shows check fingernails paint month let bore details new going full-time ride since 1985 has realblast odel Aviation 4Devis Diesel Heads Over 100 models frois 049 -16 cc Wodds largest praducer 0 Medel Diesel Feals Trusfenus Youc 25 40 co 40 60 60 Ia 90 9fltoa 120 LESS KASSLKIN Dieselize Davis Diesel Its Awesome Up 50% Power Same Easy Starting No Glow Plugs VJ llvice Long Scale Sound DAVIS MODEL PRODUCTS P0 Box 141 Dept MA ord CT 06460 877-10/u complete inrmaion packet send $400 credit applied first order iEtectroD namws Inc 1-800-337-1638 Orders Only 31185 SCHOOL AFT LIVONIA MI 48150I Info313 422-5420 Far 313 422-5338VISAI I PO Box 3384 Torrance CA 90510 Add 20% shipping Send SASE Catalog
Edition: Model Aviation - 1997/02
Page Numbers: 54, 56
U Bob Underwood AS WE DROP new year winter months long line swap-shop events seems prudent pass along some thoughts regarding radio systems Perhaps little history would help discussion 1982 present set 72 MHZ frequencies assigned model airplane use similar set 75 MHz frequencies placed service surface use seven frequencies formerly used modelers shared commercial users grandfathered five years formally phased out March 1987 frequencies 72080 72160 72240 72320 72400 72960 75640 MHz use frequencies illegal models time should understood assigned commercial users such activities high-powered pagers etc Furthermore use frequencies AMA members violation Academys Safety Code 1991 present 72 MHz model frequencies phased service Additionally Academy working conjunction FCC Radio Control Manufacturers Association RCMA promulgated guidelines created socalled narrowband transmitters receivers program narrowband older equipment put place along identification program transmitters manufactured modified narrowband specifications identified gold sticker narrowband specifications became requirement manufacturers gold sticker program gradually phased out Any transmitter purchased since March 1 1993 required law narrowband Note receivers have mentioned relative FCC regulations phase-in stickers what-have-you simplistic form FCC concerned about what goes airnot what taken out control RF Radio Frequency emissions attempt make system work receiver use has poor selectivity causes problems operating model properly thats operational problem Granted poor receiver can create safety issue end Academy promulgated equipment guidelines included receivers Again industry voluntarily followed guidelines system works little year now March 1 1998 older wideband transmitters will no longer legal FCC regulation Academy will work helping modelers comply regulation no like regulation exists receivers should understood continuing operate older wideband receivers creates considerable risk interference resulting crashes receiver regulation will occur 1999 deals receiver emissions basically affects equipment manufacturer receivers manufactured until 1999 date legal grandfathered forever Now NewComer does affect you purchasing new radio equipment doesnt What being sold now has sold past several years meets FCC regulations should cause no problem However elect purchase used equipment A little year now March 1 1998 older wideband transmitters will no longer legal FCC regulation factors discussed need considered snap decision swap shop may result problem Some guidelines may help 1 Is brand offered still being sold serviced 2 If manufactured before 1993 does transmitter have gold RCMAIAMA sticker 3 If #2 yes ask whether narrowband manufacture updated later time 4 Is receiver narrowband older updated systems will utilize newer aftermarket receiver Check see receiver states narrowband aware some very early ones marginal 5 Ask whether system AM FM PCM PPM AM check see receiver dual conversion offers better interference rejection fine proceed cautionespecially receiver doesnt say narrowband its FM PCM PPM should have problem being narrowband system Note manufacturer uses term ABC&W denotes system fully meets guidelines may technically said dual conversion 6 Ask whether system has used regularly charged regularly 7 Systems 27 MHz legal operate airplanes surface use recommended airplanes because potential interference CB operations subject narrowband requirement 8 Do purchase operate unit amateur band Ham50 53 MHz unless possess valid Amateur license Ham check see club joining has properly licensed individual can instruct Operation equipment 50 53 MHz unlicensed individual legal 1980 ruling FCC stated nonlicensed individual may operate two-way communication equipment immediate supervision licensed individual same condition does exist radio control operation 9 Read radio section Membership Manual explains complicated issues earlier column mused about type equipment buy two-stick single-stick Mode 1 Mode II number channels AM FM PCM . on Rather repeat lets pass along some general thoughts guide thinking 1 Make certain mode considering something club instructors fly Mode II typical found far Single-stick equipment found entry level stuff very left handed may find Mode comfortable Check out differences 2 Remember radio investment can serve years cost difference between basic four-channel radio four servos upgraded sixchannel system four servos slight Consider future can always buy extra servos later want functions model 3 Check area determine specific frequencies seem problem some cases may myth However some communities flying sites especially large metropolitan areasmay have interference problem because close proximity high-powered pager Ask around 4 Beware expert states 54 Model Aviation waytogois . brandto buy ten such person suffers trouble cant see forest trees Change pace September 24 did second live satellite electronic field trip Museum Muncie What blast discussed four basic elements flight lift thrust drag gravity control forces elevator aileron rudder thrust questions students studio well called live great elements made fun presence Orville Wright aka Charlie Bauer District VI Vice President complete bike bowler long coat Working Christi Meredith Indiana Academy freewheeling trio made 50 minutes fly pun intended Copies tape should available time read call details As write hand packing bag second trip Muncie present program lab school working 5th-7th-grade kids project Aviation Feats Records will done via split screen kids have working presentations answering questions about three important aviation events 1927 Lindberghs solo transatlantic flight 1947 X-1 broke sound barrier 1986 Voyager around-the-world flight will moderate discussion will discover whether found information answers some very interesting questions posed concerning flights well points ponder about records aviation general later News Change AMA West wife wont call office home has moved reduced schedule least thats basic plan will still preparing column other activities Model Aviation will still part Education Committee several others will still represent AMA trade showsstill being available resource needed biggest difference will come regarding manning infernal phone 8 5 isnt suggest wont available may get back situation Actually planned just retire encouraged continue some activity part-time basis Its flattering feel needed Rae pleased can ease personnel burden regular Headquarters staff attending shows etc other hand Ive looked some models just have build age 65 Id better get So-o-o see us shows check fingernails paint month let bore details new going full-time ride since 1985 has realblast odel Aviation 4Devis Diesel Heads Over 100 models frois 049 -16 cc Wodds largest praducer 0 Medel Diesel Feals Trusfenus Youc 25 40 co 40 60 60 Ia 90 9fltoa 120 LESS KASSLKIN Dieselize Davis Diesel Its Awesome Up 50% Power Same Easy Starting No Glow Plugs VJ llvice Long Scale Sound DAVIS MODEL PRODUCTS P0 Box 141 Dept MA ord CT 06460 877-10/u complete inrmaion packet send $400 credit applied first order iEtectroD namws Inc 1-800-337-1638 Orders Only 31185 SCHOOL AFT LIVONIA MI 48150I Info313 422-5420 Far 313 422-5338VISAI I PO Box 3384 Torrance CA 90510 Add 20% shipping Send SASE Catalog