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Radiation Emission Controls

An engineer formerly working at the National Radio Astronomy
Observatory (http://www.gb.nrao.edu/nrqz/) lists its radiation
emissions controls:


Among them is the banning of vehicles which use spark plugs,
thus diesel-fueled are required.

Which suggests a question about radiation emissions at
NSA Utah Data Center's 32 large generators.

Since nearly all government and commercial data centers
have generator back-ups, how are emissions from generators

NRAO also "banned digital cameras down range after they
proved quite noisy."

Are noisy digital camera emissions more privacy threatening
than phone signals? Is NSA harvesting those emissions?