[TowerTalk] Original Hygain/Military-Commercial Products

[Gene Smar]

TT:

     For more background info on the development of SS technology, Google <Hedy Lamar>*, the 40's screen actress.  In 1942 she and her publicist, George Antheil, developed and were granted a patent for an early form of frequency-hopping encryption to provide anti-jamming for radio-controlled torpedoes.  (I'm finished with this OT topic.)


73 de
Gene Smar  AD3F
* And it's NOT <Hedley>.


From: Jim Lux <jimlux at earthlink.net>
Date: 2007/12/31 Mon AM 08:26:44 CST
To: Pat Barthelow <aa6eg at hotmail.com>, Chris Pedder <chris at g3vbl.co.uk>, 
	towertalk at contesting.com, aa6eg at hotmail.com
Subject: Re: [TowerTalk] Original Hygain/Military-Commercial Products

<snip>
  
>
>Someone once told me, that,  long before  Spread Spectrum became familiar in the ham radio vernacular, that  the term "Spread Spectrum" was itself classified, could not even be said openly, among the military/spook crowd.

Probably true, but that would have been 50s, perhaps 60s, era.   R.C.Dixon published Spread Spectrum Systems in 1976.  Lots of people were thinking about it and discussing it before then. About the time that PLL synthesizers  & microprocessors became common, it became possible to do FH fairly easily, and there were a number of "retrofit" FH radios around.

Jim, W6RMK
_______________________________________________



_______________________________________________
TowerTalk mailing list
TowerTalk at contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk