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Re: [TenTec] man-made interference

To: tentec@contesting.com
Subject: Re: [TenTec] man-made interference
From: Bill Fuqua <wlfuqu00@uky.edu>
Reply-to: tentec@contesting.com
Date: Mon, 01 Dec 2003 08:58:10 -0500
List-post: <mailto:tentec@contesting.com>
Sounds like the power supply needs a simple high voltage transformer for it's power supply.
May not be as compact but should work. How complicated are those things?


Bill

At 09:26 PM 11/30/2003 -0700, you wrote:
YES! i had an electronic air cleaner on my furnace too. it is now GONE! no
way around the noise that i could find. jack ak7o

----- Original Message -----
From: "Guy Zebrick" <gwzmcz@earthlink.net>
To: <tentec@contesting.com>
Sent: Sunday, November 30, 2003 9:23 PM
Subject: [TenTec] man-made interference


Just a note, perhaps this will help someone - I've been dealing with noise on different band - a slow drifting crud, about 8kHz wide. It sounds a lot like the drifting crud I got from a 12v/25A Radio Shack switching power supply that I owned for about an hour before I took it back.

Tonight I found the source! I have a Honeywell electronic air filter in my
return air line. It has a high voltage DC switching power supply to charge
the elements.When I turn it off - the noise is gone!

I don't think line filters will help - I'm might try running a separate
ground line to a water pipe, but I think I'm stuck with having to turn off
the device when I operate my ham radio.

....so, don't forget those electronic air filters when you're trying to find
electrical noise. 73's
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