Found in a 1988s Radio Electronics, this circuit uses transistors of general use to increase the intensity of signals up to about 30 MHz. The power can be done by battery because the consumption is low.
Operating in the FM range, this is one of the many versions of FM transmitter that the reader can...
This general-purpose transistor audio amplifier was found in the March 1990 issue of Radio...
This is the receiver for the previous circuit. The audio amplifier supports equivalents. The...