Found in an old American documentation this FM modulator makes use of a varactor diode. The circuit can be easily implemented given the small number of components used.
This circuit was obtained from an 80's documentation from General Electric. The circuit uses an...
This circuit, from a 1987 documentation, is for the CB3817E transmitter. Connected to the handset...
We found this circuit in the National Semiconductor FETDatabook of 1977. The signal has an...