Hi again Jim
With your thinking  below .My remote private site should  work in the same
sort of way  as what you are suggesting except while s2 has a signal on it 
it sends this signal to both s2 users and back to s1 repeater at the same
time.In return the signal works the same as your first 3-5 lines below.I
only require one link radio on the remote sites and not one at each end of
the link .However with our open we have a separate link repeater paired with
the s1 (explained better in my response to skip) so the link system works at
the same time as the central site repeater.In the open system we don't link
the TX frequencies directly from site to site .I.e.(s1tx to s2rx)(s2tx to
s1rx) due to a error in frequency allocation,which will be fixed and which
we expect to link directly with our private system as we wont get the sites
frequencies licensed so close together next time
 
Thank You,
Ian Wells,
Kerinvale Comaudio,
361 Camboon Road.Biloela.4715
www.kerinvalecomaudio.com.au
 
-------Original Message-------
 
From: Jim Brown
Date: 4/01/2008 8:25:48 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Linking two shared repeaters
 
Ian, here is my thinking. When site 1 has a signal on
the repeater input, the signal from site 2 is blocked
because of the circuit that gives precedence to the
local site repeater receiver. When a site 1 user
unkeys, there will be no CTCSS tone coming back from
site 2 to key the site 1 repeater. The combination of
the precedence circuit and CTCSS requirement for both
repeaters keeps the system from locking up. The same
circuit would be required between the receivers at
site 2 as in site 1. And both repeaters would have to
be configured to only transmit a CTCSS tone when a
user keys the input, not during the squelch tail.

73 - Jim W5ZIT

--- Kerincom <[EMAIL PROTECTED]> wrote:

> I will have a look at the circuit and see .The
> problem we found with link
> setup 1 upper design is we could not have one link
> radio on one site and one
> on another site as when the site 2 link stops
> transmitting and rx site 1
> tail retrips site 2 and keeps them on .Another
> problem was while s1 link in
> transmitting s2 receiver is trying to pick up the
> incoming signal and s1
> link transmission at the same time .

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