Suggested by General Electric in a 1968 documentation this integrated amplifier uses a component of the era, the PA237. The circuit runs on 24 V and excites a 16-ohm speaker.
The circuit presented is a simple MW tuner that can be plugged into the input of any audio...
This circuit is from an American 1967 documentation and can be implemented with modern equivalent...
This RF circuit measures transmission power from 0.25 W to 10 W. The maximum frequency depends on...