This reflex receiver for the mid-wave range employs germanium transistors of the time. We found it in an English documentation from 1967.
This source was obtained from a former publication for valves but also serves for powering common...
This circuit, found in a publication of the year 1968, uses a MOSFET at the input to increase...
We found this circuit in a 1986 documentation. It uses only LEDs, batteries, resistors and the...