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OK, If I read your post correctly you want to increase the spacing to more
than 5 MHz for use with a VHF-Hi Business system.
Since this is a mobile low power notch only duplexer it will depend on what
spacing you are trying to achieve. If close to 5 MHz, like 5.5 to 6 MHz, I
would try and see what can be done. If more than 6 MHz you probably want
to forget it and get another candidate. Also you don't give a lot of info
about conditions where it will be used so even if it would tune up properly the
construction may not be appropriate for your intended use.
Milt
N3LTQ
----- Original Message -----
Sent: Tuesday, December 13, 2005 8:53
PM
Subject: [inbox] Re: [Repeater-Builder]
Sinclair VHF Duplexer
In a message dated 12/13/2005 7:43:40 PM Eastern Standard Time, [EMAIL PROTECTED] writes: <---It's a typical mobile type duplexer. Notch only, can only
handle 50
watts and not that much isolation. Not to mention that at 5
Mhz, it's
unusable for amateur use.
the 50 watt limit is fine with our system. We purchased it off of
another business that upgraded their repeater for use with our business
repeater using VHF-Hi. Their freq pair was spaced at 5 MHz though, and
ours is not; so my question was if this can be retuned at my local radio shop
to support the more than 5MHz of seperation, or if (like Sinclair said) it has
to go back to the
factory.
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