One interesting question is exactly how strong radio frequency
illumination could cause compromise of information being processed by
electronic equipment. I have an idea for a mechanism whereby such
illumination could induce generation of harmonic and beat frequencies
that are modulated by
NSA's "NACSEM 5112 NONSTOP Evaluation Techniques,"
Reprinted July 1987, released under FOIA:
http://cryptome.org/nacsem-5112.htm (196K, 3 images)
About half of the 100-page document has been redacted,
so brace for the mangle.
[A quick contemplation of the wavelength of the sounds in question
would put an end to that speculation I suspect. --Perry]
I know this has been somewhat done to death, but there's a nice
comparison: GPS positioning using carrier phase tracking is equivalent
(well, it's reversed - clicks come
