Figure 5-3. Narrow band preamplifier, schematic diagram.

TM 11-6625-524-14-2

Figure 5-3. Narrow band preamplifier, schematic diagram.

of signal applied to the base of the driver. Am-

5-7. Driver and Output Circuit

plifier gain control 3A2R55 is disconnected on the

The driver (3A2Q13) and output stage (3A2Q14)

two lowest ranges to allow additional gain. The

a r e conventional capacitor-coupled stages.

signal developed in the output stage is applied to

Amplifier gain control 3A2R53 adjusts the level

the synchronous demodulator.

Figure 5-4. Driver and output, schematic diagram.