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Figure 1-2. Control, Radio Set C-2299/VRC
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TM-11-5820-401-35-1 Control Frequency Selector C-2742/VRC and Control Radio Set C-2299/VRC Manual
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Control, Frequency Selector C-2742/VRC, Circuit Functioning


TM
11-5820-401-35-1/NAVELEX
0967-432-3020
CONTROL, FREQUENCY SELECTOR C-2742/VRC
CIRCUIT FUNCTIONING
Section I.
c. To change frequencies, the C-2742/VRC
2-1. System Application of C-2742/VRC
CHAN SEL switch is operated to the position
containing the desired frequency. In the radio,
One or two C-2742/VRC's are used to control op-
the automatic tuning mechanism tunes the radio
erating frequency, output radio frequency (RF)
within 5 seconds.
power, and operating direct current (dc) power
d. To change the output RF power, the C-
of the RT­246(*)/VRC,
2742/VRC PWR switch is operated to the desired
a. Before using the C-2742/VRC, the radio is
condition ,(HI or LO). The radio power control
turned on, the pushbutton circuits are adjusted
circuits respond automatically.
to set up the desired operating frequencies, and
the POWER switch is set to the REMOTE posi-
e. To turn off the radio, the PWR switch of the
tion.
C-2742/VRC connected directly to the radio is
set to OFF. The CONTROL indicator light goes
b. To gain control of the radio, the C-2742/
out indicating the radio is turned off. To turn on
VRC toggle switch SW is operated momentarily.
the radio, the PWR switch is set to ON. The sec-
The CONTROL indicator lamp lights indicating
control of the radio (c, d, and e below).
ond C-2742/VRC cannot perform these functions.
Figure 2-1. System application of C-2742/VRC


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