There are so many one tube radio in the website but they use old tubes like 1T4. I intend to experiment with a commonly found tube like the 12au, ax,at twin triode to make a simple rfegen MW radio using the ferrite bar coil of an AM radio and the PVC varicap commonly available. Then put an IC audio amp. It should be possible using 12 volts DC.
Perhaps a kit.
A coil with a capacitor across it is called a tank and is tuned to a certain frequency. Armstrong fed the signal from such coil into the grid of a triode to amplify it. He discovered that by feeding some of the amplified signal back into the grid, regeneration occurred, making the signal even loader. His invention got a worldwide recognition and this was called the REGENERATIVE RADIO OR REGEN for short.
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