Posted by Bill Hammond on URL: http://elecraft.85.s1.nabble.com/P3-as-a-RFI-QRN-tracking-device-tp7136429.html
In the below link please find a screen shot (Flickr) of the P3 display as well as a hint as to what it is. I was never able to run down the noise before I got the P3. I wonder if others have used the P3 to chase down interference?
I haven't named the offending device as a brain tickle :)