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| Series-tuned Air-core Coil Crystal Radio |
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| Series-tuned Crystal Radio - Schematic |
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| Series-tuned Crystal Radio - Coil view |
Related: 'Gibson Girl' Crystal Radio
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Another Series-tuned Air-core Coil Crystal Radio
This is the air-core coil version of my 'series-tuned crystal radio with alternative detector'.
It is enclosed in a cosmetic jar with the 500 pF PVC gang condenser mounted inside its cap.
There is sufficient clearance to close the jar even though the coil is wound on its body.
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: 'Gibson Girl' Crystal Radio
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Related: 'Gibson Girl' Crystal Radio
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'Gibson Girl' Crystal Radio
This series-tuned 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 terminal strip modified to suit.
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.
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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| The SCR - 578 |
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| 'Gibson Girl' Crystal Radio |
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| 'Gibson Girl' Crystal Radio - Schematic |
Related post: Series-tuned Ferrite Loopstick Crystal Radio
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