I had a piece of software from ASUS causing very hard to detect DPCs. Listen for the noise and start terminating things until it stops, particularly hardware related utilities - power management, CPU or graphics management utilities, etc. it isn't always a real rf noise.
73, Mickey N4MB On Monday, February 25, 2013, Graham Haddock wrote: > Bill: > > If you take a portable AM broadcast radio, and tune it off of any station, > can you hear the noise? > > If so, can you use the portable AM radio, which usually have a directional > "loopstick" antenna to find the noise, by determining the direction with > the > antenna null, and walking towards it as it get louder. > > Or similarly, can you hear it on an automobile AM broadcast receiver that > is tuned off of any station? Similarly, drive around and note where it > gets loudest. > > --- Graham > > == > > > On Mon, Feb 25, 2013 at 7:25 PM, William H. Fite > <[email protected]<javascript:;>> > wrote: > > > I'll be grateful to anyone who can tell me what this intermittent noise > > might be. It occurs on all bands at intervals of about 1.5 seconds. I > > have unplugged everything in the house, one by one, with no improvement. > I > > have made no changes to my station whatsoever. All my power supplies--a > > big linear and a bunch of wall-warts--are quiet. > > > > This is probably of little interest to the group, as a whole, so you may > > want to reply to me personally. > > > > Thanks in advance for your help. > > > > Bill > > KJ4SLP > > > > -- > > I can explain it for you, but I can't comprehend it for you. > > _______________________________________________ > > Flexedge mailing list > > [email protected] <javascript:;> > > http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz > > This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is > > used for posting topics related to SDR software innovation and other > > technical SDR topics. > > > _______________________________________________ > FlexRadio Systems Mailing List > [email protected] <javascript:;> > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ > Knowledge Base: http://kc.flexradio.com/ Homepage: > http://www.flexradio.com/ > -- Mickey Baker, N4MB Fort Lauderdale, FL *“Tell me, and I will listen. Show me, and I will understand. Involve me, and I will learn.” *Teton Lakota, American Indian Saying. _______________________________________________ Flexedge mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used for posting topics related to SDR software innovation and other technical SDR topics.
