Lots of digital signals on the bands these days -- To hear the various modes
and sounds go to URL:

http://rover.wiesbaden.netsurf.de/~s.../DIG_intro.htm

P.S. Worked for HP also - 21 years -- Santa Clara Div
--
73 From The Signal In The Noise
Caveat Lector Ya All
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wrote in message
...
Hi gang -

I recently returned to 20M CW and am hearing a noise
reminiscent of the old "Russian Woodpecker", only
with a faster repetition rate. It seems to move
around the low end of the CW band and isn't locally
generated because I can hear propagation effects on
it.

Or are these old ears hearing things?

73 Don K6LTS