Check to ensure that a1l required cable connections and control settings have been made. If any
of them have not been made, make them now.
Press the PTT switch on the handset to start the radio tuning. You should hear the 1-kHz tuning
tone in the handset. Release the PTT switch.
When the radio set has tuned, press the PTT switch and hold it. Speak into the handset to
transmit. A sidetone (your voice) should be heard in the handset. Release the PTT switch to hear
the distant station reply.
Adjust the SQUELCH control so that distant stations still can be heard when they are trying to
talk and to eliminate the background noise.
b. If the tactical situation requires you to operate under listening silence, you should set the MODE
switch on the receiver/exciter to the V-RCV position. This disables the transmit portion of the radio and prevents
accidental transmitting of your radio set.
c. To shut the radio set down at the conclusion of the operating requirement, set the POWER ON/OFF
switch on the AM-7152 to the OFF position and the VOLUME OFF/MAX control on the receiver/exciter to the
OFF position.
PRACTICE EXERCISES:
10.
The MODE switch on the RT-1209 is used to select one of four modes of operation, these four modes of
operation are __________, _________, __________ and __________.
11.
The SB switch on the RT-1209 is used to select either __________ or __________.
12.
The FREQUENCY KHZ switches can be used to select a frequency from __________ to __________.
13.
The switch used to select the type of antenna being used with the radio set AN/GRC-213 is located on the
__________ __________.
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ANSWERS:
10.
V-RCV, V-TR, D-TR, D-RCV.
11.
USB or LSB.
12.
2.000.0 to 29.999.9.
13.
AM-6874/PRC-104 amplifier/coupler.
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33. SUMMARY. During this lesson, you have learned how to prepare and operate radio set AN/GRC-213 for
normal voice operation.
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