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Re: Overlong RTCM3 packets from EUREF-IP

From: Marek Szuba
Subject: Re: Overlong RTCM3 packets from EUREF-IP
Date: Tue, 29 Sep 2020 16:05:26 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.12.0

On 2020-09-29 15:52, Greg Troxel wrote:

>> Indeed, replacing 512 with 2048 in the source code seems to make
>> gpsd-3.21 handle EUREF RTCM data just fine.
> By 'handle', do you mean
>    gpsd 3.21 with that change connects to the EUREF caster at some RTCM3
>    mountpoint
>    gpsd sends the RTCM3 to some receiver (F9P?)
>    the receiver is then able to do RTK successfully

I think so. That's what gpsd does with this sort of data, right? Simply
forwards it to capable receivers.

>> What do you think about about increasing RTCM3_MAX to 2048, guys?
> I'd say if we don't have a footnote justifying 512 :-), and BKG uses
> 2048, and you are seeing 590, it's entirely reasonable to flip to 2048.

IIRC all the source code says about RTCM3_MAX is that RTCM 3 packets
vary in length more than RTCM 2 ones.


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