This circuit was originally intended for reading movie soundtracks. The circuit is from 1967 and was found in an English publication. The sensor is semiconductor type.
With this circuit it is possible to receive signals in the 2 m (150 MHz) range on a pocket AM...
The commercial MT2B receiver manufactured in Japan in the 1960s had a listening device only and...
We found this circuit in an 80's Electronic Design. The circuit uses an integrated of the time....