[GreenKeys] Slightly OT - Churchill War Room

[Duncan Brown]

Good info on SIGSALLY at Jerry Proc's site: 
http://jproc.ca/crypto/sigsaly1.html

Duncan
K2OEQ

On 3/30/2019 20:04, Roy Morgan wrote:
>> 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
> K1LKY since 1958
> k1lky68 at gmail.com
>
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>
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