[GreenKeys] Slightly OT - Churchill War Room

[Roy Morgan]

> On Mar 30, 2019, at 6:59 PM, Keith Lueck <kwlueck at swbell.net> wrote:
> 
> Hi All -
> 
> Just returned from a trip to London ... the docent claimed that the secure line to the US was encrypted using the first digital voice encryption - something called Sigsaly, which was presumably destroyed, like Colossus  - I need to google it, but once again, any crypto people on the list have any knowledge of this?  

The topic of Sigsaly came up earlier.  Here is the text of the messages:


From: Nick England <navy.radio at gmail.com>
Subject: Re: [TekScopes] SIGSALY 1942 ADC recreation with tubes
Date: February 18, 2019 at 9:03:51 AM EST
To: Roy Morgan <k1lky68 at gmail.com>
Cc: jlkolb at jlkolb.cts.com

Hi Roy and John
There was the TSEC/KO-6 (Phoebe) System used for fleet commander voice comms. 
Photo
http://www.navy-radio.com/crypto/KO6-01.bmp
A little info
http://www.navy-radio.com/crypto/KO6-csp6620a.pdf

But I haven’t come across any crypto gear with tape transports. I’ll ask around. 

Cheers
Nick

On Sun, Feb 17, 2019 at 8:08 PM Roy Morgan <k1lky68 at gmail.com> wrote:
John,

I’m sending your message to one of the illustrious members of the Greenkeys (teletype) list, Nick England:
Nick England K4NYW
www.navy-radio.com



Nick,

Any ideas about this voice encryption system?

(Oh no! Don’t tell me you HAVE one!!)

Roy


Begin forwarded message:

From: "John Kolb" <jlkolb at jlkolb.cts.com>
Subject: Re: [TekScopes] SIGSALY 1942 ADC recreation with tubes
Date: February 17, 2019 at 6:00:28 AM EST
To: TekScopes at groups.io
Reply-To: TekScopes at groups.io


Well, way off topic, but I found it interesting.

When I was a Navy Redioman, serving aboard the Commander Seventh Fleet flagship, USS Providence, in 1963, there was a voice encryption machine, which was about 5 feet tall and 10 or 12 feet wide, with about 3 tape transports, of the vertical type used for IBM computers of that era. I don't remember it being installed on the USS Oklahoma City which replaced the Providence, so may not have been useful

Have any knowledge what this would have been?

John


On 2/13/2019 4:34 AM, Froggie the Gremlin wrote:
Hello All:
Perhaps off-topic,
Please see my SIGSALY 1942  ADC recreation with tubes, in February IEEE Spectrum:
Printed magazine has the first link article.
https://spectrum.ieee.org/geek-life/hands-on/rebuilding-a-piece-of-the-first-digital-voice-scrambler
https://spectrum.ieee.org/geek-life/hands-on/sigsaly-analogtodigital-converter-construction-and-debugging
Your comments and feedback appreciated.
Jon

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Roy Morgan
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k1lky68 at gmail.com




-- 
Nick England K4NYW
www.navy-radio.com

Roy Morgan
K1LKY since 1958
k1lky68 at gmail.com