Adam, Interesting information, thank you for sharing. That's exactly the way to do it. I know I am getting heavy power line noise and know approximately where mine is coming from as I hear it when there is dense fog and I am out for my daily run. I will be zeroing back in on these poor insulators come spring and the fog returns. I thought nothing of it before, but it has become worse. My neighbor across the street has a horse and an electric fence. He knows how much I appreciate him keeping the grass cut, but now the moisture and snow are near the insulators is causing the electric fence pulse which is not cured by any of the K3 settings, it also is not cured by any other radios in the shack either. (How old can the horse get before passing?!%^$#@)
73, Bill K9YEQ K2 #35; KX1 #35; K3 #1744; mini mods -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Adam Koczarski Sent: Monday, January 12, 2009 9:47 AM To: [email protected] Subject: Re: [Elecraft] Using K3's Pre-amp > -----Original Message----- > From: [email protected] [mailto:elecraft- > [email protected]] On Behalf Of wayne burdick > Sent: Friday, January 09, 2009 8:53 PM > To: Dave Yarnes [BJ] ........... all, because all lower signals are > already masked by the noise. I just ran a noise experiment at my QTH yesterday. My typical noise is s7.0 S6.5 s7.5 on 80m, 40m & 20m respectively. With every circuit in the house off, except the one the radio is on, and with only the power supply and the radio on that one circuit the noise is s4.0 S4.75 s5.0. I turned on circuits one at a time and recorded to S level jump for each. The 'home entertainment center' seems to be the biggest contributor so I'll start there. Now I just need to figure out how the switch off the neighborhood transformers and silence my neighbors! :) I have some fairly large power lines across the street. Are they usually strong contributors to noise? You can see the resulting data here: http://www.ka7ark.com/20080111QTHnoise/pics.html Adam - ka7ark _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
