The U.S. top secret investigation on the "Moscow Signal" and the effects of microwave radiation on humans.
DARPA Program Plan 562, code named "Project Pandora"
2017-08-25, Foreign Policy
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3509929/
Excerpts (open source article):
“Beams of microwaves from Soviet sources aimed at the US embassy building in Moscow were detected since 1953, increasing in intensity in 1975. In 1976, an ambitious epidemiological study was commissioned by the U.S. Department of State to investigate possible health effects on the staff of the US embassy in Moscow and their families.”
“From 1953 to May 1975, the microwave beam came from a source in a Soviet apartment building about 100 m west of the 10 floor embassy building, affecting the west facade of the central building, with highest intensities between the third and eighth floors. The frequency was from 2.5 to 4.0 GHz and maximum exposures are given as up to 5 μW/cm2, 9 hours per day [1].”
“From May 1975 there were beams from two sources, originating from buildings about 100 m east, and south, of the embassy. Maximum exposures are given as up to 15 μW/cm2 for 18 hours a day [1].”
“The highest reading recorded was 24 μW/cm2 close to a window in a 10th floor room for a two hour period. On 6 February 1976, screening was installed on windows, which along with reductions in transmitter power, reduced the levels in even directly exposed rooms to less than 0.1 μW/cm2. “
“The microwave exposures had a frequency range somewhat higher than most cell phone frequencies, and similar to microwave relays, radar, and satellite links [25]. The exposure intensities in Moscow were low, for example in comparison to the ICNIRP recommended limit for public exposure of 10,000 μW/cm2 for frequencies from 2 to 300 GHz [26,27], but the maximum exposure levels documented were high compared to typical levels of public exposure from all radiofrequency sources or from cell phone base stations. A 1980 paper gives a median exposure level of 0.005 μW/cm2 in US cities, and an estimate that 1% of the population were exposed to levels greater than 1 μW/cm2 [28].”
What is the importance of having beams from two sources? What is possible using wave superposition or interference (constructive or destructive)? What is possible using this interferometric technique?