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

[Stephen - K1LNX]

David,
    Yes, this is the exact scenario. I think it can be solved by
eliminating the hangtime from propagating across the hub alltogether, but
not sure what the best approach is.

Thanks,
Stephen
K1LNX

On Fri, Aug 26, 2016 at 6:58 AM, David McGough <kb4fxc at inttek.net> wrote:

>
> Hi Stephen,
>
> I guess, in your scenario, the ping-pong is generated from repeater TX
> hang times? So, something like:
>
> 1) User keys up "Repeater A" directly.
>
> 2) Simplex AllStar link "Radio 1" hears "Repeater A" TX audio and/or hang
> time and repeats to the hub.
>
> 3) Simple AllStar link "Radio 2" connected to same hub keys and brings up
> "Repeater B"
>
> 4) "Repeater A" unkeys, "Radio 1" COS goes inactive, "Radio 2" unkeys.
>
> 5) "Radio 2" hears "Repeater B" TX audio and/or hang time, keys hub,
> "Radio 1" and "Repeater A".
>
> 6) "Repeater B" unkeys, "Radio 2" COS goes inactive, "Radio 1" unkeys.
>
> 7) Goto 2 and repeat forever
>
>
> 73, David KB4FXC
>
>
>
> On Fri, 26 Aug 2016, Stephen - K1LNX wrote:
>
> > Hi guys... I am in the midst of deploying a 5 site system. All of the
> sites
> > with the exception of my own will be using link radios sitting on the
> > repeater pair, some sites do not have internet access so this is the only
> > option. Each node will be permalinked to our hub.
> >
> > What we discovered when we brought site number 3 online was the dreaded
> > "ping-pong" effect, and I did some digging and found out about the
> > rxondelay parameter, that seems to be the place to start with this.
> >
> > The other option we are considering is dropping the hang time off each
> > repeater and using app_rpt to do hang time and courtesy tones instead
> > (duplex = 1 instead of 0) but not sure that would work real well or be
> > optimal.
> >
> > Anyone have any experience with a setup like this that can offer some
> > advice? This is my first foray into this unfortunately, I've always just
> > interfaced the radio or repeater directly to app_rpt in the past or
> through
> > a controller so it's been a bit of a challenge.
> >
> > 73
> > Stephen
> > K1LNX
> >
>
>
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