This is yet another balanced modulator circuit for SSB transmission. This two-diode circuit was found in a 1980s documentation. The diodes are commonly used.
This power source was found in a 1968 Electronics World. The transistors are from that time. The...
This circuit was found in a 1986 documentation. The circuit uses 12 V relays and is powered by a...
This circuit amplifies VHF signals in the two-meter range and is very critical, especially...