This circuit is from a Radio Electronics from April 1964. The circuit uses power transistors of the time, which must be mounted on a good heat radiator. Modern equivalents can be used.
This circuit was found in old documentation but uses components that are still common. The circuit...
This transmitter kicks in when the microphone picks up sound. This sound then modulates the signal...
In the figure we have the way to connect an LED on the output of a power source to indicate the...