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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