Series-tuned, Shunt-fed Crystal Radio with Air-core Coil

Discussion in 'Wireless & RF Design' started by vu2nan, Dec 4, 2015.

  1. vu2nan

    Thread Starter Member

    Sep 11, 2014
    43
    10
    There's been an update............

    Later a link-coupled fixed-tuned version was built.

    [​IMG]
    Link-coupled version - Schematic

    A cosmetic jar was used for the enclosure/base and a polythene can body for the former.

    [​IMG]
    Crystal Radio in a cosmetic jar

    Performance was quite good with headphone current measuring 500 μA.

    Regards,

    Nandu.
     
    Last edited by a moderator: Dec 6, 2015
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