Try one of these they work very well
http://www.ebay.co.uk/itm/Radio-Tone-Cross-Band-Repeater-Controller-Full-Duplex-/300909287802?pt=LH_DefaultDomain_3&hash=item460f97597a
Dave M0YOU
Sent from my HTC
----- Reply message -----
From: "Mark Kent" <mark.antony.kent@xxxxxxxxx>
To: <wkars-members@xxxxxxxxxxxxx>
Subject: [wkars-members] Monday evening net - cross-band working - FT897
Date: Sun, Jul 26, 2015 12:02
The FT897 is not capable of cross-band repeating.
To make this work, I think I’ll need two rigs with VOX, one for each band, and
a multiplexer or separate antennae for said bands.
The venerable FT-480r doesn’t have VOX, so it would need additional electronics.
The FT-897 does have VOX, and I have a VX7R, and a couple of Baofeng handies
which also have VOX and multi-band coverage.
So one possibility looks like this:
1. FT-897 set to RX-TX on 433.375, with Vox engaged, and connected to 70cms
antenna; set to 10 Watts so okay for all licence classes.
2. Handy set to RX-TX on 145.375, with Vox engaged, and connected to 2m
antenna.
The audio-out of handy goes to audio-in on FT-897.
The audio-out of FT-897 goes to audio-in on Handy.
Both rigs are set with CTCSS for both RX and TX to something other than
103.5Hz, but very close in frequency to avoid any audible products from
accidental mixing.
The FT-897 forms the link to Bidborough from Otford at 70 cms.
The handy provides a local RX/TX for the Darenth Valley area.
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This is a complex setup, and would be much simplified by using a rig which can
cross-band repeat out of the box.
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In any case:
At Bidborough, the equivalent is set up. Note that the 70 cms path would need
the same CTCSS setup, but the 2m access would need a different CTCSS from the
Darenth Valley end to avoid opening up both ends simultaneously.
Clearly this would only be up with the operators present, so we’d use it for
Nets, and then take it down.
For this approach to work, all stations would need to be able to reach one or
other end of the 2m access points for both TX and RX with adequate S/N, or
access the 70cms directly, but that would require being able to access both the
Sevenoaks and the Bidborough stations simultaneously.
The approach does seem to be fascinating, involving using radio to do the same
kind of thing which echolink is doing using the internet.
thoughts?
Ta, Mark G8PHM.