Thank you Elecraft reflector members for all of the great suggestions on this QRN problem.. With your help I was able to locate the problem. I would of not found it without your help.
Now, I have no idea what to do about the issue, perhaps nothing. I now know the source. It's my neighbors treadmill. We share a power transformer (underground utilities). Although I bet the noise is from a motor arching and most likely is radiating at the motor as opposed to being carried on the power line. I have hope as he is not a ultra marathon runner and his runs rarely cause a QRT of over an hour. If you want to hear the sound click on the Flickr link: http://www.flickr.com/photos/ak5x/4279625626/in/photostream/ http://www.flickr.com/photos/ak5x/4279577818/in/photostream/ Thank you again list members for allowing me to tap the collective :) 73, Bill AK5X On Jan 16, 2010, at 1:34 PM, Bill Hammond wrote: > I have been chasing this noise in my urban neighborhood for several years > now. It usually visits during the daylight hours and stays for several > hours. It has a rhythm and is across all frequencies and bands. I have > pulled the big switch in my house and the noise is still with me (listening > on battery powered rigs). Neighbors on all sides of my city sized lot have > swimming pools and my first suspicion is noise generated by circulation > pumps. > > Here are two recordings (on a K3 of coarse). Why not ask the most > discriminating radio fans in the world their opinions on the source? > > http://www.flickr.com/photos/ak5x/4279625626/in/photostream/ > > > http://www.flickr.com/photos/ak5x/4279577818/in/photostream/ > > > Bill Hammond-AK5X > [email protected] > [email protected] > [email protected] > K3 #69 > K2/100 #4637 > K1 #2033 > KX1 #1023 > T1 > > > > Bill Hammond-AK5X [email protected] [email protected] [email protected] K3 #69 K2/100 #4637 K1 #2033 KX1 #1023 T1 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
