We found this balanced modulator circuit for DSB and possibly SSB transmissions in US 1980s telecommunications documentation. The diodes can be replaced with equivalents.
We find this circuit in a radio amateur publication of 1977. Its purpose is to measure the...
This circuit was obtained in an old US 1974 documentation when Nixie tube displays were common. The...
This ultra-low consumption circuit was originally designed to be powered by a solar panel or small...