[Elecraft] OT Local QRN what is it?

[John, KD8K]

Here is a web site that might be of help to you in identifying this. It 
is the RF noise identification web site.

http://www.arrl.org/tis/info/HTML/rfi-noise/appliances.html

To me it sounds a lot like the "treadmill" noise clip.

Hope this is of help.

73, John KD8K


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
> wham727 at aol.com
> ak5x at mac.com
> ak5x at sbcglobal.net
> 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:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
>
>