We found this balanced modulator circuit for DSB and possibly SSB transmissions in US 1980s telecommunications documentation. The diodes can be replaced with equivalents.
This small-range MW transmitter can be used as a wireless microphone. The circuit is from an...
This circuit appears in other articles and suggestions for circuits in this section from other...
This simple circuit for a high impedance magnetic phone (500 ohms or more) has been found in a...