[Elecraft] P3 Noise signature

Fred Jensen k6dgw at foothill.net
Tue Apr 30 22:44:45 EDT 2013


OK, I think I posted the screen shots at

www.foothill.net/~andreaj/QRN.html

I think the capitalization may be important.  For all who replied, this 
is external noise, it appears instantaneously, usually not on weekdays 
during the day, sometimes on weekends earlier, and usually around 
1600-1700 local.  The big peaks drift slowly, often stop and are steady. 
  There's a harmonic pattern to it, a wide fundamental, and increasingly 
narrow and closer spaced "harmonics".

It's now 1945 local, and the P3 trace is below the baseline again.  The 
noise may have continued to move up in frequency, or gone away.  If it 
one of my neighbors' TV's, they must go to bed fairly early. :-))

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2013 Cal QSO Party 5-6 Oct 2013
- www.cqp.org



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