[App_rpt-users] Connecting several sites together on a hub using link radios

[Stephen - K1LNX]

>
> what you need to do is put the repeater in external mode (shorting a pin
> to ground) and then use the flat audio in and out on the db-15 connector in
> the back.
>
> there are pins for ptt and cos.
>
> A nice little RPI and a URI-X and you have yourself a first class
> controler for that repeater


I have considered this... but we have one site that has no internet access
and a linking radio is the only option we have. I am also worried about
potential lockups of the repeater as these will be running in AMS mode. I
think this has gotten corrected in the recent firmware release, but we do
have one that has an older release and didn't want to take a chance on
that. I do agree though, this is the optimal way to go. The only caveat I
see with that is the potential for the digital hash to be fed into the USB
interface and propagated across the network when the repeater is in C4FM
mode.

73
Stephen
K1LNX


On Fri, Aug 26, 2016 at 12:04 PM, Tom Hayward <tom at tomh.us> wrote:

> On Fri, Aug 26, 2016 at 5:18 AM, David McGough <kb4fxc at inttek.net> wrote:
> > possibility would be to have a Repeater transmitted PL tone directly
> > follow the Repeater COS....Then, the simplex link radios would look for
> > that PL tone.  If the Repeater's RX COS isn't active, no PL tone
> > transmitted, and no ping-pong.
>
> I picked this quote out because it's really the most important point
> in this thread and was dismissed due to not having the right
> controllers. This can be solved!
>
> As Pete said:
> > what you need to do is put the repeater in external mode (shorting a pin
> to ground) and then use the flat audio in and out on the db-15 connector in
> the back.
> > there are pins for ptt and cos.
> > A nice little RPI and a URI-X and you have yourself a first class
> controler for that repeater
>
> And my recommendation is to not only use this for the controller, but
> to use it for the link. I've deployed a ton of 5 GHz wireless ethernet
> links with Ubiquiti and Mikrotik equipment. It works great between
> high repeater sites with line of sight between them. This is almost
> always cheaper than link radio + isolator + filters + hardline +
> antenna and will give you a full-duplex link with out-of-band control.
>
> Tom KD7LXL
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