[TenTec] man-made interference

[John]

I just tonight discovered interference coming from a kitchen exhaust fan.
shut the fan off the noise was gone from the receiver
----- Original Message -----
From: "jack" <jfriend31 at comcast.net>
To: <tentec at contesting.com>
Sent: Sunday, November 30, 2003 11:26 PM
Subject: Re: [TenTec] man-made interference


> 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 at earthlink.net>
> To: <tentec at 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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