[Elecraft] P3 Noise signature

[Ron D'Eau Claire]

Fred, I assume that you've confirmed that it is being picked up by your
antenna by removing it and connecting a dummy load and see that the noise is
gone.  

IMX, plasma TV's have a very w-i-d-e noise signature that sounds like
someone connected their HF noise generator to an amp and antenna. Unless you
are there when they turn it on, it sounds like ordinary band noise but much
higher in level, depending upon how close you are. 

73 Ron AC7AC

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Fred Jensen
Sent: Monday, April 29, 2013 7:17 PM
To: Elecraft Reflector
Subject: [Elecraft] P3 Noise signature

I usually check into the No Cal Net on 3533 each night.  I've begun to get
predictable noise with a unique signature on the P3 WF.  It's a series of
bands, the first [around 3545] is the widest, they get narrower up from that
and the separation seems to be about 40 KHz.  The higher components get
narrower but aren't any weaker.

Occasionally I've see it come on to an otherwise quiet band, and all the
"bands" on the WF drift some before stabilizing.

I have a screen shot from the P3 I'll send, anyone have any idea what this
is?  I never see it in the daytime on any band, just in the evening, which
is suspicious ... plasma TV?

If it's my neighbor Casey, I'll just need to live with it, we don't do
battle with our neighbors.  Besides, Sampson, their cat, gets along with
ours and shares his food.

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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