• [DXZone] Top Amateur Radio Websites - Issue 2206

    From DXZone via rec.radio.info Admin@21:1/5 to All on Mon Mar 7 16:09:38 2022
    XPost: rec.radio.info

    The DXZone.com Amateur Radio Internet Guide

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    Top Amateur Radio Websites - Issue 2206

    Posted:
    https://www.dxzone.com/top-amateur-radio-websites-issue-2206

    Coaxial Dipole Antenna, Cobweb Antenna, The Story of the Broadband Dipole,
    Zone Check Interactive Map, Decoding hand-sent Morse Code with Arduino,
    Morse code practice, HAMRS

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    Spy Numbers Stations

    Posted:
    https://www.dxzone.com/dx34767/spy-numbers-stations.html

    Shortwave Radio/Numbers stations
    Spy Numbers Stations are shortwave radio stations that are speculated to
    have been broadcasting since World War I. The true origin and purpose of
    them are unknown. A popular theory is that these stations are intended for spies in the field using a One Time Pad. Another theory is that they are
    used in drug smuggling operations.

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    Tropospheric Ducting

    Posted:
    https://www.dxzone.com/dx34766/tropospheric-ducting.html

    Propagation/Resources
    In the spring and during certain climatic events, radio waves can travel
    long distances due to an atmospheric phenomenon called Tropospheric Ducting.

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