TM 55-1930-209-14&P-1d.Perform the following to transmit to a remote radio station.NOTEDo not transmit on frequencies assigned to other radio sets. Refer to Table 5-2 fora general listing of channel assignments and the purpose for which these channelsare to be used.(1)Turn HI-LO POWER selector switch to desired setting.NOTEHI-LO POWER selector switch should initially be set in LO position (1 watt RFoutput power) for near stations (1-2 miles). Use HI position (25 watt RF outputpower) when contact cannot be made using low power (LO position) or for distantstations (over 2 miles).(2)Turn CHANNEL selector switch to obtain desired channel, normally channel 16, to establish initialcontact. (Channels 16 and 22 are always monitored by the USCG.)NOTERefer to Table 5-2 to select the proper channel to be used as a working channelafter initial contact. Before transmitting on the working channel, make surechannel selected is not in use.(3)Hold microphone about 1 inch from the mouth, press and hold PUSH-TO-TALK button onmicrophone, and speak into it slowly and distinctly.(4)When message is complete, release PUSH-TO-TALK button so acknowledgment and incomingmessages can be received. Marine radios cannot receive incoming messages while transmitting.Wait until incoming message is completed before pressing PUSH-TO-TALK button again totransmit.5-7.3.3 Walkie-talkies. The three walkie-talkies are solid state VHF/FM transceivers that operate in the 156.025 to157.425 MHz frequency range. These frequencies and channels are within the marine radio band as indicated in Table5-2. Each walkie-talkie operates on six channels: two channels are preprogrammed (i.e., channel 6 for intership safetyand channel 16 for distress, safety and calling), and A, B, C, and D which may be programmed by the operator. Eachwalkie-talkie develops 1 or 5 watts of RF output power.NOTEWalkie-talkie battery charger should be connected to a 115 Vac power source.a.Perform the following to receive incoming messages:(1)Remove walkie-talkie from battery charger (Figure 5-10).(2)Attach external VHF antenna to receptacle (Figure 5-11) if not in place.(3)Turn VOLUME ON/OFF control clockwise to mid-position on dial.(4)Turn squelch control fully counterclockwise.(5)Set channel selector switch to desired position.(6)Turn SQUELCH control clockwise until background noise disappears.(7)When message is received, adjust VOLUME/ON/OFF control to desired listening level.5-17
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