Figure 2-3. Frequency Control circuits, Block Diagram

TM 11-5820-509-35

Figure 2-3. Frequency Control circuits, Block Diagram

A7. The 1-MHz pulse generator of this module doubles

a sine wave output at the 1-MHz frequency step that has

the incoming 500-kHz standard signal and then converts

been selected by the frequency control knobs on the

front panel. The 100-kHz output of the divider in radio

the resulting signal into a 1-MHz pulse-train. These

pulses are applied to the 5 to 14-MHz amplifier circuits

frequency oscillator (A6) is applied to the 100-kHz pulse

of the CV1377A/PRC-47 (A3) where a ringer generates

2-6