[Hallicrafters] 5-letter signals

[jeremy-ca]

BS Yourself.

ALL classified CW traffic was in 5 letter code groups in the USN. The RM's 
typed it on a special form and then gave it to the Radio Officer on watch to 
take into the decoding room. Replies were handed to the RM's in 5 letter 
groups to transmit back.

In early 1961 the first on line crypto machines came aboard ship. These 
worked off the RTTY converters and printed out on a Model 15 machine for 
starters and then the Model 33's and 35's since the 15's came apart when the 
speed went from 60 to 100WPM. It took over a year to get the bugs out of the 
system and drop the backup CW transmissions.

As the only ET on board with TS Crypto clearance and training on the 
decoding box I spent many hours keeping that crap running. I was in the 
radio room when the first traffic came across ordering our group in the 
Meditarranean to hightail it to Cuba.

Carl
KM1H


----- Original Message ----- 
From: "Thomas C. Dailey - Dailey Services, LLC" <daileyservices at qwest.net>
To: <hallicrafters at mailman.qth.net>
Sent: Monday, October 01, 2007 3:45 PM
Subject: [Hallicrafters] 5-letter signals


> BS!  The only signals used by radio TELEGRAPH ops were "Q" and "Z" 
> signals. ZUE means affirmative, ZUG means negative, and so forth.
>
> "Routing Indicators" were used for teletype (on and off line), and WERE 
> 5-letters, but based on the central distribution station they came from -
>
> i.e RUWD during the mid-60's was Naval Relay Station, San Diego.
>
> RUWDE was Fleet Anti-Submarine Warfare Center, SDIEGO (us) - RUWDG, 
> RUWDAF, RUWDB, RUWDC, etc.  went to other commands.
>
> Perhaps this is what he is thinking, but to my knowledge there were NEVER 
> 5-letter signals among civilian or military ops.
>
> TCD
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