This FM micro transmitter was found in an 80s spy book. The circuit can work with equivalent FETs and is powered by a voltage of 0.6 to 6 V. Details of the coil are given next to the diagram.
Found in an old Radio Electronics, this circuit uses current components, used to rectify AC...
This circuit was found in the February 1970 issue of Radio Electronics magazine. It uses an RCA...
This circuit was found in a 1967 US documentation. The circuit applies to modern general purpose...