Re: P25 North America reflector


Robert Bretzman
 

Thanks for the explanation. This is now making sense.
Robert
K4WZV


On Sat, Sep 18, 2021 at 11:27 AM Steve N4IRS <szingman@...> wrote:
For people watching this thread, This patch was derived for a change we made to Quantar Bridge when we started seeing the "overflow in the P25 RF queue" and hearing the issue on the resulting Quantar transmission. That is why a user listening to a DVSwitch based node does not experence the same bad audio that a unmodified MMDVMHost hears.

On 9/18/21 10:02 AM, Steve N4IRS via groups.io wrote:
So,
I have had NO response from anyone who can test a change to MMDVMHost. I'll make it a little easier. I will provide a ARM or x86 binary. I can't provide a binary for anyone running Pi-Star at this time. 
For people reporting packet loss from the Pi-Ster dashboard, check your raw MMDVMHost log for the error message:
E: 2021-09-18 13:40:19.719 P25, overflow in the P25 RF queue
This is a good indication of what is happening.

Here is a comparison of 2 logs:
Stock Pi-Star
M: 2021-09-18 13:55:21.540 P25, received network transmission from KB0AJQ to TG 10200
M: 2021-09-18 13:55:27.401 P25, network end of transmission from KB0AJQ to TG 10200, 6.5 seconds, 5% packet loss

Modified MMDVMHost
M: 2021-09-18 13:55:21.549 P25, received network transmission from 3129130 to TG 10200
M: 2021-09-18 13:55:27.406 P25, network end of transmission from 3129130 to TG 10200, 6.1 seconds, 0% packet loss

I am running a STM32-DVM modem on a CDM repeater. I am listening on a Kenwood  NX-5300 This is running the modified code.
 

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