After reading the FAA Flight Advisory put out Thursday 1/20/2011 regarding Department of Defense GPS tests to be conducted January 20 through February 22 of 2011, where pilots were advised that during the tests, GPS signals would be unreliable or unavailable within the southeast U.S. area, an immediate red flag went up especially in light of recent electro-magnetic anomalies, strange bird and fish kills, and increased seismic activity. (See the FAA pdf for the full advisory and the large radius circle map of the area involved.)
I immediately contacted an expert Ham Radio operator who also had found the FAA advisory extremely interesting to say the least and was already monitoring to find any new or unusual Military HF communications that might shed light on this matter or to detect any unusual signals. Just prior to this advisory , HF military communications had been almost non-existent during the visit of the Red Chinese Presidential entourage where many Chinese aircraft had landed at Andrews Airforce Base and no doubt had their signal detection gear working over time.
On Friday 1/22 they came back up in a flurry with many units trying to establish communications with Puerto Rico and discussions were heard about an "anomaly" that was causing great difficulty with communications that was not due to normal propogation problems. The units which seemed to be in the Atlantic off Florida and in the Carribean were having to change frequencies multiple times in working with Puerto Rico Comm Station in order to get decent copy of messages. These were not normal reach flights but were coded units anxious to get their reports into the Comm Station. Later Friday evening, "the anomaly" was detected by the HAM operator.
Initially, it was described as an amplitude modulated signal of extreme power of many megawatts. It was constant and not pulsed and was in the VLF range. It showed up on the Spectrum analyzer and also on lightning detection equipment which use the VLF for detection and mapping of lightning which are normally used by pilots. The problem was that there were no storms in that area. The location of "the anomaly" was also actually further off the coast of Florida than the location given for the center of the circle for "GPS tests ?" and closer to the Bermuda Triangle area.
Specifically, it was stated that it exhibited a repeating pattern that was very strange, and unlike any the HAM had ever heard. It was not a "whistler" or lightning or any other geophysical signal that the Ham had ever heard in over 40 years of experience, though it was said .......it is NOT MAN MADE AND IT IS CAUSING MAJOR PROBLEMS. It did show up on the