Found in an American documentation from 1969, this circuit makes use of a pair of matched transistors of the time. The circuit supports modern equivalent components.
We found this circuit in a Radio Electronics from July 1968. The circuit generates rectangular pulses...
If the reader still uses silk screen printing tables this is an interesting circuit found in a 1994...
We found this receiver for medium and short waves in a publication from the 1980s. The medium wave...