Demonstration of a reproduction of a 1922 crystal radio that I built.
The plans for building this set can be found at:
http://www.crystalradio.net/
NBS Circular No. 120 is the instructions for building the base radio.
NBS Circular No. 137 is the instructions for making the antenna capacitor and the phone capacitor and the modifications to the base radio to use them.
NBS Circular No. 133 is the instructions for modifying the base radio for using the tube detector unit.
That 15" Altec has a wonderful resonance.
audiotrax2000 8 months ago
How about going to the high Z phono input on your stereo?
supressorgrid 1 year ago
I've made many home made kits since the early 70s. your crystal is fantastic. I'm thinking of making one similar to yours.
you gave the motivation.
pp5cw 1 year ago