Grid 1537 ”Tempest” schematics

Jon Elson elson at
Sat Aug 17 18:22:54 CDT 2019

On 08/16/2019 02:20 PM, Torfinn Ingolfsen via cctalk wrote:
> On Fri, Aug 16, 2019 at 1:16 AM Curt Vendel via cctalk
> <cctalk at> wrote:
>> The owner tried them... Grid told him the design is owned by the US Govt
>> and only they have the technicals on it... I was just hoping someone
> Aha. Perhaps your friend should try a FOIA request  then? Not sure
> that would work.
It probably won't.  TEMPEST technology is at some level of 
secret, and even though particular machines are not 
classified, the technical means used and the testing 
protocols to get them to meet TEMPEST requirements ARE 
secret, still, as far as I know.


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