TM 55-1930-209-14&P-1
d.
Perform the following to transmit to a remote radio station.
NOTE
Do not transmit on frequencies assigned to other radio sets. Refer to Table 5-2 for
a general listing of channel assignments and the purpose for which these channels
are to be used.
(1)
Turn HI-LO POWER selector switch to desired setting.
NOTE
HI-LO POWER selector switch should initially be set in LO position (1 watt RF
output power) for near stations (1-2 miles). Use HI position (25 watt RF output
power) when contact cannot be made using low power (LO position) or for distant
stations (over 2 miles).
(2)
Turn CHANNEL selector switch to obtain desired channel, normally channel 16, to establish initial
contact. (Channels 16 and 22 are always monitored by the USCG.)
NOTE
Refer to Table 5-2 to select the proper channel to be used as a working channel
after initial contact. Before transmitting on the working channel, make sure
channel selected is not in use.
(3)
Hold microphone about 1 inch from the mouth, press and hold PUSH-TO-TALK button on
microphone, and speak into it slowly and distinctly.
(4)
When message is complete, release PUSH-TO-TALK button so acknowledgment and incoming
messages can be received. Marine radios cannot receive incoming messages while transmitting.
Wait until incoming message is completed before pressing PUSH-TO-TALK button again to
transmit.
5-7.3.3 Walkie-talkies. The three walkie-talkies are solid state VHF/FM transceivers that operate in the 156.025 to
157.425 MHz frequency range. These frequencies and channels are within the marine radio band as indicated in Table
5-2. Each walkie-talkie operates on six channels: two channels are preprogrammed (i.e., channel 6 for intership safety
and channel 16 for distress, safety and calling), and A, B, C, and D which may be programmed by the operator. Each
walkie-talkie develops 1 or 5 watts of RF output power.
NOTE
Walkie-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.
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