Interesting IBM 5150... or something

[Paul Anderson]

I believe tempest specs are still classified.

Paul

On Thu, Jun 11, 2009 at 4:55 PM, Warren Wolfe <lists at databasics.us> wrote:

> Brian Lanning wrote:
>
>> I've never heard of this.  Looks even more tank-like than the 5150.
>> Look at the backplane where the cables go in.
>>
>>
>> http://cgi.ebay.com/Vintage-IBM-Tempest-Computer-for-Classified-work_W0QQitemZ190313579086QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item2c4f92c24e&_trksid=p3286.c0.m14&_trkparms=65%3A10|66%3A2|39%3A1|240%3A1318|301%3A0|293%3A4|294%3A50<http://cgi.ebay.com/Vintage-IBM-Tempest-Computer-for-Classified-work_W0QQitemZ190313579086QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item2c4f92c24e&_trksid=p3286.c0.m14&_trkparms=65%3A10%7C66%3A2%7C39%3A1%7C240%3A1318%7C301%3A0%7C293%3A4%7C294%3A50>
>>
>>
>
> Oh, for Pete's sake, a Tempest terminal, right when we're talking about
> classified info.  Just so you know, this one is compromised by the insecure
> monitor (I think - it should be MUCH bigger, and not plastic, if Tempest
> approved) and the non-Tempest keyboard.  "Tank-like" is a very concise
> description.
>
> I worked for a company that made (CP/M capable) Tempest terminals for the
> Burroughs TD-830 emulation market.  The government would not tell you what
> acceptable levels of emissions were -- a company had to make a prototype,
> and send it in for testing.  A while (gov't time) later, thumbs up or thumbs
> down.  It often took many cycles to get a good one.  Once it was approved,
> they bought them for HUGE prices.  Quite a money-maker.
>
>
>
> Warren
>
>