S2 - S4 with only about S5 before a thunderstorm? I think that's pretty good, Terry. Last night, just monitoring 40 Meters while puttering around in the shack, I had an S2 - S3 level. It would get worse from time to time. I think somebody in the neighborhood had an air conditioner compressor giving off some RF hash.
73 de Larry W2LJ ----- Original Message ----- From: <[EMAIL PROTECTED]> To: "W2LJ" <[EMAIL PROTECTED]> Cc: "Elecraft Discussion List" <[email protected]> Sent: Sunday, August 01, 2004 12:17 PM Subject: [Elecraft] Noise Problems...still > Hi everyone, > > Well, the noise level has been lowered a lot, but I'm still getting > higher noise levels than I think I should. On 40-meters, I am getting an average > of S2-4 peaking at S5 around the time thunderstorms begin to form. > > I've put up a vertical which helped. Putting down 12 tuned radials, 2 for > each band, helped even more. Moving the power supply a few feet away may have > also made a difference but I can't tell by ear. > > I am using the standard red/black zip type supply line from the power supply > to the radio. I am wondering if going to coax to supply power to the radio > may not drop the noise level even more? I would think that the R/C tank in the > radios power circuit would take any ripple or noise out but maybe I'm wrong. > > I also have a ground that is a 20' long piece of 10GA bare copper wire > running to a single lightning rod from a second story window. I'm now wondering if > this wire isn't acting like part of the antenna or maybe injecting my > transmitted signal back into the receiver via the power supply. Since I'm only > running 5-10 watts output, should I use coax for the ground as well and decouple it > with ferrite beads just in case? > > For a beginner, this is all pretty confusing! I read so much, trying to come > up to speed quickly. The problem is that I begin confusing which solution > goes to what problem I remember reading about last month in some periodical > can't remember. > > Sometimes a little brain damage helps > > 73 de Terry - KC0QZX > _______________________________________________ > 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 > _______________________________________________ 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
