Michael S. Lorrey wrote:
> This data deals with air broadcast radiofrequencies. One area that is
> not public knowledge, or what I haven't seen much of to date, are
> signals transmitted in the sinewave harmonic patterns through the power
> lines. These are quite present, and they can be amplified by a
> surveillance system through use of a few simple components to boost the
> harmonic output of the surveilled facility.
Interesting idea. I don't think you could get anything useful about the
operation of the electronic components (mostly because CPU & motherboard
architectures come and go in less time than it takes for DOD to procure a
piece of equipment), but that darned keyboard interface might stand out
enough to be a viable target.
Or maybe not - there is an awful lot of interference between that signal and
an external power line. It would probably take some serious hands-on work to
figure out if it could actually be done.
Billy Brown
bbrown@transcient.com
http://www.transcient.com
This archive was generated by hypermail 2b29 : Thu Jul 27 2000 - 14:10:38 MDT