Here's one of many possible options for a two-site system.
Each repeater site has one added half-duplex radio. Here's the
basic list:
Repeater Transmitter & Receiver
TP-163 Tone Panel
Regular two-way radio used as the link.
A few small electronic parts to make an interface (small
dpdt-relays)
You might want to draw the basic diagram out.
Start with the main repeater receiver discriminator audio
through the contacts of an added mini dpdt relay (keyed on
via the repeater receiver cor logic) to the TP-163 input.
Same thing with the link radio discriminator audio... gated
through a small relay operated by the link radio cor logic to
the same tp-163 disc input location as the receiver.
Discriminator audio arrives at the tp-163 input through the
closed relay contacts only when the COR (squelch logic) of a
receiver becomes active. A cheap and easy way to isolate
and route an active receiver discriminator output to the
tp-163 input.
Transmit audio and ctcss from the tp-163 is routed to both
the repeater and link radio inputs. If required... simple
op-amp and/or resistor networks can be used to help buffer
various ctcss/audio paths.
Transmit PTT from the tp-163 output is routed direct to the
repeater transmitter and the remaining relay contacts on
the repeater receiver cor logic. The other side or output
of the relay contacts are routed to the link radio ptt input.
The link radio ptt becomes active only when the repeater receiver
cor relay contacts are closed AND tp-163 outputs a valid ptt
logic.
****
In operation a valid COR and decoded ctcss tone from the repeater
receiver through the tone panel and latched COR Relay contacts
provides ptt logic, audio & ctcss to both transmitters.
Inbound link signals with valid ctcss and cor are routed to the
tp-163 and provide repeater transmitter ptt, voice audio and
ctcss signaling. The repeater transmitter becomes active with
any valid tp-163 transmit logic.
The link radio ptt logic requires valid transmit logic from the
tp-163 and the repeater receiver COR Relay being closed... so an
inbound signal will not self-key the link radio tx.
****
In the case of the link radio... it's smart money to program it
on two different frequencies for the link. As an example the
UHF transmit frequency of link Radio-A might be 462.5125 and
the receiver set to 467.5125 The link "Radio-B"at the remote
site is programmed to the reverse freuencies of link Radio-A.
There are number of paths possible to expand the above system.
cheers,
s.
> "Kerincom" <[EMAIL PROTECTED]> wrote:
>
> Hi guys .I have one shared uhf commercial repeater using a tp-163
panel and
> I am going to install another repeater on different frequencies
50kms away
> and are looking at installing a tp-163 ctcss panel to it but also
looking
> for a easy way to link the two repeaters together allowing clients
on one
> site to be able to use the same tone on both repeaters just by changing
> channel and still maintain the privacy on both sites .
> One option I came up with was on the 2nd site when someone uses it
the panel
> detects their tone and feeds site 2 audio/ctcss to the site2
transmitter and
> also a link radio to send it at the same time to site 1.When someone
uses
> site1 ,a ctcss/audio signal is received by the link receiver which
> disconnects the link transmitter and also site2 receiver and the link rx
> ctcss/audio is then fed into the tone panel to decode and then is fed to
> site 2 transmitter .
> Link radio transmitter feeds site 1 rx frequency input
> Link radio receiver receives site 1 TX frequency output.
> Does anyone have any further suggestions or know of web pages
detailing
> linking two or more shared repeaters
> Thank You,
> Ian Wells,
> Kerinvale Comaudio,
> 361 Camboon Road.Biloela.4715
> www.kerinvalecomaudio.com.au
>
