[Elecraft] KX2, spy radio

[Dave Sublette]

As a former CT — I enjoyed the web page.  Thanks for sharing.

Dave, K4TO
> On Sep 1, 2017, at 1:09 AM, Mike Morrow <kk5f at earthlink.net> wrote:
> 
> Chas wrote:
> 
>> SSB would have been the equivalent of encryption.
> 
> Not even remotely so...SSB technology goes back decades before WWII.
> 
> From Wikipedia:
> 
> "The first U.S. patent for SSB modulation was applied for on December 1, 1915 by John Renshaw Carson. The U.S. Navy experimented with SSB over its radio circuits before World War I.  SSB first entered commercial service on January 7, 1927 on the longwave transatlantic public radiotelephone circuit between New York and London."
> 
> Mike / KK5F
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