This commercial receiver from the year 1958 uses two AA cells as Power supply. The circuit is intend to receive MW station and the transistors are germanium types not easy to find today.
This circuit from a 1978 American publication is used on vintage vehicles that still have contact...
The previous oscillators that use gatesshown in this section, and the 4093 in the basic version,...
This circuit is from old documentation, but can be adapted to use modern components. Power...