FCC RF/EMC testing is well nigh useless for TEMPEST protection. Compliance engineering firms have some equipment which might be useful for TEMPEST experimentation, but the actual specs for Class B (Class A is basically anything that won't kill you) are pretty worthless for this application. I imagine there may be some other "dual use" technologies through for testing TEMPEST equipment. Perhaps some medical equipment has stringent stray emanation specs? I believe the equipment you'd really want is the real "TS" (technical surveillance) gear, which is 1) not available on the open market and 2) expensive. The paper seems to have involved an AM radio and an obsolete piece of British TS kit; van Eck used a modified TV. Any HAM could probably build a suitable receiver, the real problem is knowing how much attenuation is necessary to defeat the real TS gear. This is why I am fundamentally impressed by the obfuscation techniques from the paper, rather than just straight shielding. -- Ryan Lackey rdl@mit.edu http://mit.edu/rdl/