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Re: ubxtool set GLONASS L1/L2


From: John Ackermann N8UR
Subject: Re: ubxtool set GLONASS L1/L2
Date: Wed, 6 May 2020 21:21:42 -0400
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1

Thanks for the continued troubleshooting, Gary!

I'm out of the house tomorrow (field trip to our hilltop ham radio VHF
contest station, social distancing enforced) so probabl won't get a
chance to play further until Friday.

John
----

On 5/6/20 8:04 PM, Gary E. Miller wrote:
> Yo John!
> 
> On Wed, 6 May 2020 19:43:34 -0400
> John Ackermann N8UR <address@hidden> wrote:
> 
>> Just pulled the latest head and am building now (my testbed for this
>> stuff is a little old Atom 520 board, so not the fastest horse in the
>> barn).
> 
> I build on RasPi 3, so I understand.
> 
>> Sad news... ubxtool happily took the "GLONASS,2" command now, but it
>> appears not to have made any difference.
> 
> While you are waiting for me to fix this, you also have the Configuration
> Items options:
> 
>         ubxtool -P 27,10 -z CFG-SIGNAL-GLO_L2_ENA,1
> 
>> Then sent -e GLONASS,2:
>>      * the ubxtool "sent" message said GLONASS L1 enable
> 
> That is the decode of what was sent.  So it has to be in where you
> were originally looking.
> 
>> The same set of commands on the F9T setting -P 29.00 ended up with
>> GLONASS L1 enabled, but not L2.  So it worked, sort of.
> 
> ubxtool command sedning knows nothing of the receiver versions, only
> the protocol version.  Which is not involved in -e GLONASS
> 
>> So there's not only a bug, it's a bug that acts differently on the two
>> slightly different devices
> 
> Different u-blox are very picky, in different ways, about the CFG-GNSS
> command.  Way too many otherwise legal settings that are illegal in
> combination.  Try the Configuration Items as above, that is the u-blox
> answer to the CFG-GNSS mess.
> 
>> What concerns me a bit is that in both cases the message following the
>> -e GLONASS,2 command seems to tell it to enable only L1:
> 
> Yes.  I'm juggling too many balls today.  Another fix pushed to git
> head.
> 
> RGDS
> GARY
> ---------------------------------------------------------------------------
> Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
>       address@hidden  Tel:+1 541 382 8588
> 
>           Veritas liberabit vos. -- Quid est veritas?
>     "If you can't measure it, you can't improve it." - Lord Kelvin
> 




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