Placed near a common receiver, this oscillator is intended to generate a beating signal to receive RTTY or SSB communications. The circuit is from old telecommunications documentation.
Found in an American amateur radio documentation by the name of “antennascope” this circuit is...
In the figure we have the way to use a common multimeter as a field strength meter. RF shock...
Molex is using the FFC / FPC Premo-Flex jumpers for inter-board and inter-plate interconnects...