This receiver was found in a Japanese publication in 1967. The circuit uses germanium transistors and details of the coils are not given. Power is supplied by a 9 V battery.
This is an improvement on the previous circuit with a preamplification stage. The circuit is from...
This bench circuit was found in the February 1998 issue of Electronics Now magazine. It can be...
This circuit was found in a 1967 Electronic Design. FETs are from the time, so modern equivalents can be...