Today I had 7 scanners setup, each scanner setup to scan a 25 MHz
segment of the 225-400 MilAir band. Everything was going fine up until
1048 hrs EDT. 5 of the 7 scanners stopped with what sounded like a data
signal. Here are the freqs which had the very same transmission:
225.0000
275.0000
300.0000
325.0000
375.0000

The transmission lasted for about 3 minutes and quit. Very strong
signal on all 5 freqs. I’ve done many searches using 7 scanners before
and never had anything like that happen. Anyone have any ideas of what
this was?

George
http://www.MilAirComms.com