On 21 Jan 2005 04:33:27 -0800, "davidrobinson@postmaster.co.uk"
wrote:
>Arthur wrote:
>> On Fri, 21 Jan 2005 07:39:48 -0000, Mark Carver
>
>> wrote:
>> I've also used it successfully for Band I and Band IV TV signals, but
>I
>> think it's asking a bit much for this to work with closely-spaced,
>> relatively narrow-band FM signals in Band II.
>> I would suggest that if the transmissions are sufficiently spaced in
>
>> frequency for a stub to be effective, the FM tuner should itself have
>
>> sufficient selectivity and dynamic range to work without the stub.
>
>We're only about 3 miles from Sandy Heath. I'm not worried about the
>tuner - it's the distribution amplifier (not bought yet) that I suspect
>would be overloaded, which would give nice cross mod of BBC 3CR and
>Chiltern all across the FM band.
>
>All I can do is try. When I have something in place, I'll come back and
>seek advice if the problem manifests itself. I've read Bill's excellent
>article, and will try both 1/4 and 1/2 wave stubs first to try to solve
>the problem.
>
>Thanks for all the advice everyone.
>
>Cheers,
>David.
>P.S. suggestions for suitable DA with good headroom where no gain is
>required would be gratefully received.
What is the distribution amp for? Are you planning to feed multiple
tuners? If so, it may be possible just to use a passive splitter with
very little loss in signal. This way you shouldn't get overload from
Sandy. I would recommend a 4 element aerial at least if this was the
case. If you plan on pointing it Peterborough (which from where you
are is roughly in the same direction as Sandy?) you should get a
perfect signal, at least when it's up & running again!)
Marky P.
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