This is the circuit for the HM-10ª, an instrument sold by Heathkit. The circuit is from a Radio Electronics from May 1963. The indication is by an analog instrument.
We found this transmitter circuit for different frequency ranges in a 1992 documentation. The...
This circuit was found in a French magazine Toute LÉlectronique from 1978. Transistors are not...
This configuration is from a 1964 US documentation valid for any FET. The range of power voltages...