[time-nuts] Re: Thanks for adding me, and please help. Motorola Oncore

[Germán Herrera]

Hi Marcelo, welcome to the list.

I have no experience with oncore modules, but here's my 5 cents:

If the antenna works correctly on a non Motorola module and, assuming 
you have an active antenna, I'd suspect the bias voltage that the 
antenna requires may be different (lower?) than the one delivered by the 
Motorola modules.

If that is true and the Motorola modules are unable to power the LNA on 
the antenna, you may need an external bias tee to feed the antenna with 
the correct voltage.

Hope this helps,
BR, German

On 2022-09-18 9:42, Marcelo Dantas via time-nuts wrote:
> Hi there Everyone,
> 
> Thanks for accepting me to this list.
> I am in (dire) need of help here and maybe one of you is a Motorola 
> Oncore
> user and could assist.
> 
> I have a couple Motorola Oncore modules, which I use mounted to a
> "baseboard" for timing purposes.
> One is a R5222U1115 and the other a R3111G1112.
> They have been sitting in a drawer for some time. Being "some time" 
> since
> the pre-pandemic era.
> Now I am trying to use them again but for whatever reason they won't 
> lock
> to any satellites.
> The modules are starting up, sending 1pps and seem to be accepting 
> commands
> correctly.
> I have also tested the baseboard (power, serial, etc) and the antenna.
> The antenna works well on a third (non-motorola) module.
> I have tried everything, left the modules there running for 24 hours. 
> No
> joy. None of them will lock to any satellites.
> I have tried defaulting them using WinOncore, no change.
> I have also tried to find an almanac file to upload, hoping it would 
> help,
> but couldn't find one with the required .alm file extension.
> At this point I do not know what to do anymore. I have a system 
> (module,
> board, antenna, power, etc.) that should just work, and yet it refuses 
> to.
> Maybe there's some special factory reset? Maybe there's some command I 
> do
> not know about? Maybe other software than WinOncore with some extra
> debug options?
> 
> Any guidance here would be deeply appreciated.
> 
> Thanks a lot in advance,
> Marcelo.
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