My recent digital activity on 2m has been pretty limited, but I have been puzzled by wideband "buckshoot noise" that I was thinking was from something at our weekend neighbors. It is NOT!

  First this noise raises the noise floor on 144.174 by 6db and there is a nasty S7+  4Khz wide growler centered just below 144.230. These growlers are every 115Khz across 2m. 

   The source ... ANY TIME WSJT-X v2.5.4 is LOADED. It does not need to be running, I can turn the monitor off, unchanged, mode makes no difference. WSJT-X being loaded on this machine generates this noise.

   Strange!!! The computer is a Dell  ::

Intel(R) Core(TM)2 Quad core Q9400 @2.66GHz -- 8GB memory

 Win 7 -- 64 bit operating system.

I'm still trying to get my head around this!!

73  Bill  K0AWU