'Gibson Girl' Crystal Radio
This series-tuned, shunt-fed crystal radio was built using parts salvaged from a vintage / battered SCR - 578 lifeboat radio (popularly referred to as 'Gibson Girl').
It consists of a baseplate, antenna tuning coil, antenna tuning capacitor and a terminal block modified to suit.
The only part required to be fished out from the junkbox was a Schottky diode SB 860.
The local 612 kHz, 200 kW AM broadcast station comes in real loud using a 60' long wire antenna and sound-powered phones. Headphone current, measured using a 1mA FSD 60 Ω meter, is 600 μA.
Regards,
Nandu.
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