AM-18/APT Class B Linear Amplifier
This amplifier was intended to increase the output of the APT-1 and APT-3 in the upper frequency ranges to a more reasonable 120 watts. It operated Class B because the jammers were DSBRC, with a fairly broad modulation bandwidth. Frequency coverage was 107-230MHz, using a pair of 35TG triodes in push-pull.


AM-18/APT Amplifier