[RFI] Need Help Supressing a SOLO F80 Tread Mill

Jim P jvpoll at dallas.net
Sat Mar 24 20:57:00 EST 2007

Similar story here, but I __strongly__ objected to its (the 
treadmill's) operation when the RFI 'started up' one day 
and I subsequently explained to my neighbor (the same 
ones who had that nasty 'Guest' boat battery charger I
wrote about previously that would wipe out 80 M) what 
the adverse effects were on my ('receiving') end as well
as others in the area listening to the AM BDCST band.

The result: her fourteen yr-old (at the time) _put on weight_
but I didn't have to deal with *severe* RFI spanning as you 
say from AM BDCST through VHF ...

Jim P  // WB5WPA //

----- Original Message ----- 
From: "Michael, Dana A" <dana.michael at tycoelectronics.com>
To: <rfi at contesting.com>
Sent: Friday, March 23, 2007 8:29 AM
Subject: [RFI] Need Help Supressing a SOLO F80 Tread Mill

> My next door neighbor has a SOLO F80 Tread mill that makes 20 over S9
> noise on the HF bands. 80M is the worst but it makes noise from the AMBC
> band up through 10M. When they use the tread mill I just turn my radio
> off because I can't hear anything but the strongest signals. The noise
> is from the switching power supply - variable frequency drive for the
> motor.
> I have supplied two different line filters, which do not even reduce the
> noise.
> The first filter I tried is a Corcom 10VN1 that I put in a nice box with
> cord and socket. The second filter I tried is a Shaffner FN682-10/06.
> These are expensive and good filters but they don't help. 
> I tried calling the SOLO Tech Support Line at 800-258-8511 and they
> suggested getting a filter from Radio Shack or Granger. The tech said
> they have had other noise complaints. I told the tech that the filters
> didn't help and I wanted to talk to engineering and he told me they are
> in China. It looks like I will get little help from them.
> Anyone have any other ideas? I am not going to modify the tread mill and
> plug in filter don't seem to work.
> TNX es 73,
> D. A. "Mike" Michael W3TS
> Halifax, Pa.
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