between ships and between the HQ ship and shore statim to handle the military and AlxxmicEnergy Commission plain and encrypted traffic for 100al distributionend for further relay by ah~e station on long haul HF RTTY oirouits. In order to fulfill the foregoing requirements, the @TRC-1 radio transmittingand receiving equipmentwas aeleoted with combinationa of the fOll=ing terminal equipment: CF-U oarrier; CF-2B oarrier: TH-1/TCC-l and CF-7 hybrid adapter ● AN/TRC-l: A fiequenoy’modulated transmitting and reoeiving equipment that opera~s in the 70 to 100 megaoyole band and specificallydeuigned for use with oarrier terminal equipment. CF-IA Carrier Te_l Equi~nt~ An eleotronic devim operating in the ~dlo frequenoy range that prmides for four fill duplex ohanne1s that my be used for either telephone or teletype cirouit. This ohannelizationis accomplished by a system of hybrid coils and associated oaeillators. In praotice usually three channelsare used for telephaae eirouits while the fourth ohannel is employed for teletype fraa a type CF-2B oarrier equipmnto CF-2B Carrier Teminnl Equi~t; An electronic device operating in tie audio frequenoy range, that protides four full duplex teletype oirouite. This dmnnelizaticm is accomplishedby a u~t~ of h~rid 87 Section XI ooils and associated osoillatore.