CHAPTER 2. CONTROL, FREQUENCY SELECTOR C-2742/VRC

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

2-1