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Old June 11th 05, 05:47 AM
Dave Barnett
 
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On Fri, 10 Jun 2005 08:28:02 -0500, "Richard Fry"
wrote:

An option would be to install a notch filter tuned for the local FM at the
input to the problem receiver. It will attenuate that local signal (and
others close to it in frequency, to some extent). A "5KFM" type notch
filter from Microwave Filter Company may do the job, for about $25 as I
recall. Here is a link: http://www.microwavefilter.com/

That's the perfect answer, but you may be able to achieve satisfactory
results by - surprisingly - adding an attenuator (a 6db 300-ohm pad
made from resistors would be a good start) in line with the antenna
lead. RF overload characteristics are proportional to the square of
the incoming signal, so the interference will be reduced more than the
desired signals. Also, a three-element FM antenna won't be nearly as
selective as a larger yagi of the type shown he

http://www.starkelectronic.com/fm.htm

Putting one of these on a rotator will normally run rings around any
cable company unless you have interference from the new IBOC digital
radio signals.

Dave B.