Handy Crystal Radio Antenna

In a ham shack, either half of a 40m inverted ' V ' dipole antenna would come in quite handy as a usable crystal radio antenna element.

Handy Crystal Radio Antenna
However, a suitable loading coil would be required to make it resonant at the desired frequency.

Related post: Crystal Radio Antennas
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Crystal Radio Antennas

A medium wave broadcast station antenna system generally comprises a ¼ λ vertical element
and earth.

It would not be wrong to infer that such an antenna would be ideal for a crystal radio.

Crystal Radio Antenna Arrangement
However, practical reasons necessitate use of a much shorter element, with a suitable loading
coil making it resonant at the desired frequency.

Good results would be obtained with an element not shorter than 60 feet.

Related post: My first Antenna
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