Topband: Fw: Interference

Sun Sep 26 16:40:06 EDT 2004

Ian, etc.

It sounds like an unfiltered SCR speed control for a big electric motor or
motors used in a factory on apparently two work shifts.  It probably stops
after midnight and starts up again at 6 or 7:00 am?

Can you hear the interference on an AM automobile radio set at the very top
of the band?  IE 1600+ KHz?  If so, you may be able to find it by driving
around and going to the loudest interference.

73        Good luck,        George Guerin

----- Original Message ----- 
From: "ian" <g0fyd at blueyonder.co.uk>
To: <Topband at contesting.com>
Sent: Sunday, September 26, 2004 8:20 AM
Subject: Topband: Fw: Interference

> > Hello
> >
> >
> > In North West England we are suffering from wideband QRN....especially
on
> > the Fylde Coast.
> > The interference is wideband mainly between 1800-2300
> > and makes 160 impossible to use for DX purposes.
> > The interference comes in complex changing type waveforms...some square
> wave
> > is noticeable and at times it sounds like a motor excelerating slowing
> dwn.
> > Its on for at least 18hours a day at varying degrees.
> > 3 Amateurs 6 miles apart are suffering from this interference.
> > I have reported this to the RSGB EMC committee and I am awaiting
response.
> >
> > Is there anyone else suffering from this QRN that may be able to advise
in
> > locating the source.
> >
> > Regards Ian G0FYD
> >
>
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