---- jrinnebraska <[EMAIL PROTECTED]> wrote:
> 1. I need a duplexer for this system--what are your thoughts on
> cavities, etc.
Don't try to go too cheap on you duplexer, it is a common error that new
repeater owners make. They sometimes spend more on a controller that talks and
makes fancy beeps, but buy crappy duplexers. The size of the cavities are just
as important as the number. 6 inch diameter is the minimum, in my opinion, and
will take at least 6 cans to work well. Once you go to 8 or 10 inch diameter,
you can get away with 4 cans. Another consideration is what other rf systems
are at your site. I was able to use 4 small cans at my house, but they would
never work at a high RF level site. Look for BP/BR (bandpass/band rejec)t
duplexers, but there may be other combinations of cans that are available. I
have a set of Wacom duplexers that are a combination of BP/Br and bandpass.
>
> 2. Does anyone have a set of cavities we can find cheap? What's the
> best bet for cavities--size, number, etc.
Again, put your money in the duplexer. The best antenna, feedline and repeater
will work crappy with the wrong duplexers. Been there, done that, sold the
crappy duplexers and got a nice set of older Phelps-Dodge cans.
73 and gud luck, Joe, K1ike
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