[GreenKeys] QUES ABOUT CODED TRANSMISSIONS...

[Bob Camp]

Hi

Well it turns out that some amount of it was simply what it looked like 
at first glance - junk. Apparently some of the various fringe groups 
around the world had a lot of fun transmitting stuff simply to choke 
the other guys code breakers with to much work.

The part that was not junk and that was done mechanically was decoded 
by stuff that ranged all the way from multi rotor Enigma clones to one 
time tapes. Both "our side" and "their side" used Enigma clones with 
various numbers of rotors ranging from four up to a reported seven.

Of course there was also electronic gear that ultimately replaced the 
purely mechanical stuff. By the 90's I doubt that many people were 
running mechanical encryption any more for stuff they worried very much 
about. Certainly there are reports of mechanical encryption being used 
by the Soviets when they were in Afghanistan in the 1980's for tactical 
messaging.

	Enjoy!

		Bob Camp
		KB8TQ
	

On Oct 11, 2004, at 3:47 PM, ROBERT LAAG wrote:

> IN THE 70S , 80S, AND INTO THE 90S WE USED TO PRINT A BUNCH OF 
> STATIONS SENDING FIVE NUMBER GROUPS AS THE MESSAGE TEXT...  THE 
> HEADERS WITH NORMAL ZCZC TYPE STUFF CAME THROUGH OK BUT THE TEXT WAS 
> IN GROUPS OF NUMBERS...  WHAT KIND OF UNIT WAS USED TO DECIPHER THIS 
> AND WAS IT MECHANICAL OR ELECTRONIC I WONDER???
>
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