This reflex receiver for the mid-wave range employs germanium transistors of the time. We found it in an English documentation from 1967.
This circuit is from the manual of the used operational amplifier itself. The same setting can be...
September 2016 - Supercapacitors of 10F to 100F in 3 V from Eaton can now be purchased from Mouser...
This oscillator uses germanium transistor avaialble in 1958 when the project was published....