[GreenKeys] Here's a sweet one on the bay. (crypto machines)

[NNN7DXB at aol.com]

All:

Replying and adding to Jerrys' comments, there was a non-cipher 
device used with the KL-7 in some installations called an HL-1 or  HL-1B.
We had these in Germany in the CommCenters along with lots of
KL-7s and KL-47s which were still in wide use back then (along with
other types of crypto equipment which was much more modern).
 
The HL-1s were 50 rpt 50 wpm TDs that connected to the KL-7
to speed up the encryption and decryption process. 50 wpm was
the top speed, since that was as fast as the KL-7 could go.
 
The HL-1s were also produced by the Teletype Corp specifically
for use with the KL-7.
 
 
Dave in SC
CommCenter-1 Group
----------------------------------------------------------------------------
----------
 
 
 
In a message dated 5/18/2013 10:42:37 P.M. UTC-02, gfmurphy at earthlink.net  
writes:

To make  the discussion on the Greenkeys list of the SIGABA machine go
full circle,  it is noteworthy that SIGABA, SIGCUM, the KL-7 and the 
KL-47 were all  manufactured by Teletype Corporation.  It is very likely
that they  manufactured other devices.  Take a look at Jerry Proc's page 
on the  KL-47.  Here's the link:
<http://www.jproc.ca/crypto/kl47.html>
You'll see the Teletype Corp.  logo on some items and you'll also see
items with Teletype part  numbers.

Jerry Murphy


-----Original  Message-----
>From: Jim Haynes  <jhhaynes at earthlink.net>
>Sent: May 18, 2013 6:15 PM
>To:  Christian Gauger-Cosgrove <captainkirk359 at gmail.com>
>Cc:  nagle at animats.com, greenkeys at mailman.qth.net
>Subject: Re: [GreenKeys]  Here's a sweet one on the bay. (crypto machines)
>
>On Sat, 18 May  2013, Christian Gauger-Cosgrove wrote:
>
>>
>> During  WWII, the US actually developed the "best" of the rotor cipher
>>  machines; it did require power drive, and was rather large. It was  the
>> SIGABA; which had a grand total of fifteen rotors, which were  of the
>> "Enigma" style wire scrambler rotors. As I mentioned in a  previous
>> e-mail; the SIGABA was not cracked until just a few years  ago. At
>> least publicly; if the NSA found a way to break it, they  kept mum
>> about that.
>>
>Also I've read that the  U.S. issued new rotor sets once a year and had
>a spare rotor set in  reserve in case the in-use set was compromised.
>Whereas Enigma got a  couple of rotors added during the course of the
>war but the same ones  were used  throughout.



______________________________________________________________
GreenKeys  mailing list
Home:  http://mailman.qth.net/mailman/listinfo/greenkeys
Help:  http://mailman.qth.net/mmfaq.htm
Post:  mailto:GreenKeys at mailman.qth.net

2002-to-present greenkeys archive:  
http://mailman.qth.net/pipermail/greenkeys/
1998-to-2001 greenkeys archive:  
http://mailman.qth.net/archive/greenkeys/greenkeys.html
Randy Guttery's  2001-to-2009 GreenKeys Search Tool:  
http://comcents.com/tty/greenkeyssearch.html

This list hosted by:  http://www.qsl.net
Please help support this email list:  http://www.qsl.net/donate.html

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/greenkeys/attachments/20130518/28c9ac08/attachment.html>