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A grid leak resistor and capacitor unit from 1926. The 2 megohm cartridge resistor is replaceable so the user can try different values. The parallel c
A grid leak resistor and capacitor unit from 1926. The 2 megohm cartridge resistor is replaceable so the user can try different values. The parallel capacitor is built into the holder.
A TRF receiver using a grid leak detector (V1)
A TRF receiver using a grid leak detector (V1)
Image: Single triode receiver 1924
Image: Single triode receiver 1924
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A coherer detector, useful only for Morse code signals.
A coherer detector, useful only for Morse code signals.