send a note to Bob Morton VE3BFM    [EMAIL PROTECTED]
He worked for Sinclair for many years and now tunes duplexers at his home shop.

John VE3AMZ



----- Original Message ----- 
From: "Per Molund" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Thursday, January 06, 2005 4:18 PM
Subject: [Repeater-Builder] Sinclair Q2330E tuning problems


> 
> 
> I am trying to retune an Sinclair Q2330E duplex filter to 145 MHz 
> (145.1375/145.7375) from it's factory configuration of 150 MHz 
> (150.83/149.80), however the notch atenuation is strongly reduced. 
> There is also impossible to set ut the proper bandpass/notch 
> separation. 
> I noticed fron the Q2330E specification sheet that the duplexer can 
> be ordered for 132-150MHz og 148-174MHz, anyone know how I can 
> determine which version I have on hand? I would assume the high 
> frequency version can give this problem if I try to adjust it to 145 
> MHz?
> Can I assume the difference between the two versions are the cavity 
> loops and the cable harness? 
> 
> best regards,
> 
> ---per
> LA9XKA
> 
> 
> 
> 
> 
> 
> 
>  
> Yahoo! Groups Links
> 
> 
> 
>  
> 
> 
> 




 
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