The purpose of this circuit is to measure the resistance of an antenna at the resonant frequency. The circuit is from an old American documentation for hams.
This circuit was found in an American 1980s documentation. The transistors admit equivalents and the...
We find this circuit in a 1980s documentation. The circuit can be applied to modern operators with...
This circuit is from Mullard documentation from 1969. Transistors support current equivalents. Output...