While scanning the 25 meter SWBC band, I noticed some strange signals
between 1830 and 1930 UTC. Sounded like time pulses every other second
when compared to WWV. Strong in both AM and USB, only barely audible
in LSB or lower sync. Incredible range of // oddball frequencies:
11098.5, 11220.7, 11342.1, 11587.1, 11648.1, 11709.2, 11892.5,
11953.5, 12105 (underneath WTWW), 12136.6, 12190.1, 12228.2, 12442.1,
12503, 12533.6, 12686.3. I finally gave up, so there are probably
more. Some frequencies might be off by 100 Hertz, since i was using an
old Sony ICF-2010. Also, some were incredibly strong, others sounded
further away.

Any ideas?

Mike,
Louisville, KY