We found this circuit in a Japanese 1968’s documentation. The circuit makes use of transistors from that country common at the time of publication. Observe the symmetrical power supply for the circuit.
With this name, we find in a documentation by Hugo Gernsback from 1960 this small transmitter for...
This simple receiver, which requires a good antenna and grounding, was found in an Argentine...
This sinusoidal oscillator was found in Radio Electronics in 1989. It uses a 741, but other...