Found in a QST magazine from the 90s, this powerful unit is intended to supply a VHF transceiver for the 144 MHz band with 1.2 kW of power.
This simple light meter or photometer circuit uses an analog indicator of 0-1 mA. Power is...
Found in a 90's EDN, this circuit provides a current of a few tens of mA. The circuit can generate 15...
The author of this project found in a 1980 documentation gives the radio in two versions: the...