This dual balanced modulator configuration was obtained in a 1980s telecommunications documentation. The circuit makes use of transformers and the diodes are commonly used.
We found this circuit in the October 1992 Radio Electronics magazine. The frequency is given by C1...
September 2016 - It can be obtained from Mouser Electronics the FAN602 integrated circuit...
This circuit was found in an ancient American documentation. The integrated circuit is of the time...