Caveat Lector wrote:
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

Thanks; what I'm hearing is on the "Ionosondes, chirpsounders & OTHR
systems page...SUPER DARN OTHR SYSTEM. I didn't realize anyone was
running OTHR (Over The Horizon Radar) any longer since the "Woodpecker"
went QRT.

Don K6LTS