Very Interesting... I have a whole-house electrostatic air filter also, from
a company called SST. It is totally RF silent.
In fact, it's running right this second not 10 feet away from me and I do
not even pick up the sparks I hear when it zaps a big dust ball.
73! =paul= W8KC
Collector of Ten*Tecs and other fine plastics.
Visit the Virtual Ten*Tec Museum at http://mywebpages.comcast.net/w8kc
----- Original Message -----
From: "Guy Zebrick" <gwzmcz@earthlink.net>
To: <tentec@contesting.com>
Sent: Sunday, November 30, 2003 11:23 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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