TM 55-1930-209-14&P-15-3.3 Walkie-talkies. Three walkie-talkies provide short-distance communications (normally less than five miles) onthree preset frequencies in the FCC-assigned marine radio band. They provide communications between crewmemberscarrying these transceivers, with the commercial marine sets In the barge dayroom and workboat cabin, and other radioequipment operating on the same frequencies within the marine VHF/FM radio band. Transmission distance is normally 5miles or less.5-4 Special limitations. Operation of commercial marine radios must be in accordance with FCC regulations. Operationof Army radios must follow Army SSI/SOI. For specifics, refer to applicable service manual/instructions. According toFCC regulations, marine radios are licensed primarily for safety of life and property. Therefore, distress and safetycommunications have absolute priority. However, frequencies that are not reserved may be used for ship-to-ship andship-to-shore official communications.5-5 Performance characteristicsa.Army radio (AN/VRC-46 HF/FM transceiver)Frequency range30 to 75.95 MHzChannels920RF output powerLow-0.5 to 10 WHigh-35 to 65 WTransmission distanceAbout 5 miles on low power;about 25 miles on high power(1)Army radio power supply PP-6224 A/U (Barge 1) or PP-2953/U (Barges 2 and 3) regulated powersupplyPower input115/230 Vac, 60 HzRegulated power output25 2 Vdc at 10 Amp(2)Army radio HF antenna (AS-1729/VRC HF antenna)Frequency range30 to 76 MHzPower handling capability70 W, maximumb.Marine radio (C866S VHF/FM marine transceiver)Input voltage13.8 Vdc (±20 percent)Frequency range156.250-162.550 MHzChannels - Receive -50Transmit -46RF power outputLow - 1 WHigh - 25 W(1)Marine radio antenna (VHF antenna)Frequency range156.025 to 157.8 MHz(2)Marine radio power supply (NPC LR 10 regulated dc power supply)Input power requirement115/230 Vac, 60 HzRegulated power output13 8 Vdc5-6
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
