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 circuit was found in a publication from the 50's. The circuit uses germanium transistors of...
This circuit was found in a 1999 British magazine (ETI). It is a device that receives the signal...
This configuration, which uses germanium transistors and transformers, is from a publication from...