Series-tuned, Shunt-fed Crystal Radio
This shunt-fed crystal radio is housed in a plastic pencil box. It has 2 windings of 30 SWG enamelled copper wire on a 6" long, 3/8 " diameter ferrite rod.
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http://nandustips.blogspot.in/2015/10/another-series-tuned-shunt-fed-crystal.html
73,
Nandu.