This high-gain circuit was found in an American publication from the 1990s. The circuit can use general purpose transistors and powered from a source or battery.
Found in old documentation, this fuzz uses the 741 Operational Amplifier. Assembly is simple, but...
In the figure we have the simple way to use a low current switch or sensor to drive a high power...
This 3-channel transmitter for amateur analog TV from 902 to 908 MHz was found in a QST magazine...