This circuit was found in an American documentation from 1975. The components of the time can no longer be found easily, but they can be tested equivalent.
The purpose of this circuit, which we find in a 1975 radio amateur publication, is to measure the...
This 6-transistor commercial radio was manufactured in Japan in the 1960s, intended to receive...
This circuit is based on uncommon operations today but can be adapted to operate with more modern...