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

[Stephen - K1LNX]

Thanks Steve... no hang time on the hub, and the hang time off the
repeaters is fixed. All the link radios are set to duplex = 0

On Fri, Aug 26, 2016 at 8:16 AM, Steve Zingman <szingman at msgstor.com> wrote:

> No reason for a hub to have hang time. Nor should the link radios from the
> "client" repeaters.
>
> 73, Steve N4IRS
>
>
> On 8/26/2016 7:49 AM, Stephen - K1LNX wrote:
>
> 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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