"need to be re-tuned?"  Depends on who you are, where the 
equipment is, what type of duplexers you have and how they 
are set up. 

I can make a strong case for both yea or nay.

One of the larger players in the choice to to re-adjust is 
the Q of the duplexer cavities. Some of the really high-Q large 
diameter bottles have some fairly sharp F-center band pass and 
reject points when they're cranked (adjusted) up for high 
performance applications. 

If you're running, high power, a high location or a busy site 
the smart money says probably yes. It's worth checking the 
duplexer tuning for even very small frequency changes. 

cheers, 
skipp 


> "garyp609" <[EMAIL PROTECTED]> wrote:
> If a repeater was on 447.575 and the frequency was changed 
> to 447.5625 would the duplexers need to be re-tuned?
> Thanks & 73's
> Gary K2ACY
>


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