Ken Arck wrote:
> At 05:54 PM 7/21/2005 -0700, you wrote:
>
>
>>I would not put a BP cavity between the duplexer and the antenna, simply
>>because such a cavity would diminish the function of the duplexer.
>
>
> <---Gotta disagree with you here, Eric. Depending on the underlying
> problem, the addition of a single BP cavity can easily DRAMATICALLY improve
> the amount of isolation in a full duplex circuit. Maybe he's using a notch
> only type duplexer (very common I'm afraid, because of price). Maybe his
> xmtr makes lots of grass.
>
> I've run into this more times than I can count and a single BP cavity makes
> a world of difference. Preamp or no preamp in some cases.
>
> Ken
Sorry, Ken-look at that again. One doesn't normally put a cavity between
the output of the duplexer and the antenna....it would have to be broad
enough to pass both tx and rx.
--
Jim Barbour
WD8CHL
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