Found in a 1980s amateur radio QST magazine, this is the conventional circuit of a medium-wave radio. Coils and transformers are commercial types.
We found this basic oscillator configuration with two operational in Motorola's 1978...
This circuit was found in a 1970s documentation. The integrated circuit used is uncommon today....
This simple oscillator generates a 455 kHz signal. The circuit is from an 80's documentation and its...