8-21C: Local Oscillators

Question 1

8-21C2

In a RADAR unit, the local oscillator is a:

A. Hydrogen Thyratron.
B. Klystron.
C. Pentagrid converter tube.
D. Reactance tube modulator.

Answer 1

ANSWER B
The reflex klystron and the local oscillator control circuit provides resller plate voltage, causing the klystron to control the local oscillator frequency. The local oscillator operates 30 MHz below the transmit frequency on most RADARs.