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').
'Gibson Girl' Crystal Radio - Schematic
It consists of a baseplate, antenna tuning coil, antenna tuning capacitor and a terminal strip modified to suit.
'Gibson Girl' Crystal Radio
The only part required to be fished out from the junkbox was a Schottky diode SB 860. It was mounted underneath the terminal strip.
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.
73,
Nandu.
'Gibson Girl' Crystal Radio - Schematic
It consists of a baseplate, antenna tuning coil, antenna tuning capacitor and a terminal strip modified to suit.
'Gibson Girl' Crystal Radio
The only part required to be fished out from the junkbox was a Schottky diode SB 860. It was mounted underneath the terminal strip.
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.
73,
Nandu.
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