This series-tuned crystal radio was built using parts salvaged from a vintage / battered SCR - 578 lifeboat radio (popularly referred to as 'Gibson Girl').
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| The SCR - 578 |
It consists of a baseplate, antenna tuning coil, antenna tuning capacitor and terminal strip modified to suit.
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| 'Gibson Girl' Crystal Radio |
The only part required to be fished out from the junk box was a Schottky diode SB 860. It was mounted underneath the terminal strip.
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| 'Gibson Girl' Crystal Radio - Schematic |
The local 612 kHz, 200 kW AM broadcast station comes in real loud with a 60' wire antenna and balanced-armature phones. Headphone current, measured using a 1mA FSD 60 Ω meter, is
750 μA.
Related post: Series-tuned Ferrite Loopstick Crystal Radio
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