[App_rpt-users] RTCM [RX Packet Out of Bounds] ***Updated***

[Hayden Honeywood]

Is the time in UTC? How far off is the system time?

Have you done a full calibration of each board?
What baud rate do you run on your GPS's?

I tend to use 9600 baud and have had no issues with the GPS's I have used.

There is various GPS debug tools available in the RTCM. They are documented
here -
https://wiki.allstarlink.org/wiki/RTCM_Client#GPS

Can you possibly try injecting a 9.6MHz signal in place of the crystal on
board? Perhaps you have a variant of James KI0KN's problem where his
crystals were off frequency.

I can't comment on that as I built all my boards and they have external
frequency references.

Regards
Hayden VK7HH




>
> From: App_rpt-users <app_rpt-users-bounces at lists.allstarlink.org> On
> Behalf Of Hayden Honeywood
> Sent: Wednesday, May 30, 2018 5:34 PM
> To: app_rpt-users at lists.allstarlink.org
> Subject: Re: [App_rpt-users] RTCM [RX Packet Out of Bounds] ***Updated***
>
>
>
> What is your values in voter.conf for RX buffer (960) and in the RTCM
> client for TX buffer (480). Are all RTCM TX buffers set to the same value?
> Yes, 480.  These values were based upon the math Jim provided, which is a
> function of maximum latencies on the network.  We rarely have greater than
> 1ms to any host on the network.
>
>
>
> Are all the GPS's in a location where they cannot be swamped with RF? Yes,
> and they utilize PCTEL antennas with filtering for use in RF dense
> environments.
>
>
>
> Some users have had success with a dedicated RTCM as the master timing
> source (with no radio connected).   Has it been suspected that an RTCM
> doesn’t have the horsepower to handle both functions contemporaneously?
>
>
>
> Regards
>
> Hayden VK7HH
>
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> Message: 3
> Date: Wed, 30 May 2018 19:51:43 -0500
> From: "Kevin Babich" <kevin.babich at gmail.com>
> To: "'Users of Asterisk app_rpt'"
>         <app_rpt-users at lists.allstarlink.org>
> Subject: Re: [App_rpt-users] RTCM [RX Packet Out of Bounds]
>         ***Updated***
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>
> Hayden,
>
>
>
> Do you know what exactly “RX Packet Out of Bounds” refers to?  I can infer
> its meaning, but, one can’t be certain.  Any thoughts why the system time
> is always so far off?  It has always been, since I began experimenting with
> the RTCM in 2012.  This is consistent across many RTCM’s.
>
>
>
>
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