The coils of this circuit will determine the transmission frequency of this device. The circuit is from the 1960 Mullard transistor reference manual and makes use of germanium transistors.
We found this circuit in a 90s 73 magazine for radio amateurs. The circuit has 3 W of power and can...
This circuit is from old American documentation, but the transistor used is still very common...
This circuit uses a simple power source, having been found in the Philips Databook of 1990....