This receiver of two transistors for the 3.5 MHz band was found in a circuit manual from the 80's. The coil data are found next to the diagram and the transistors can be general purpose PNP.
daptation of a common multimeter for the measurement of high voltages with high input resistance,...
The regulation of high voltages through common semiconductor circuits, such as integrated circuits and...
This circuit with silicon transistors was found in a Radio Electronics from July 1965. The circuit of...