[GPS_Standard] GPS-DO w/ LPRO-101 ?

[Roberto Barrios]

> From: gps_standard-request at mailman.qth.net
> Subject: GPS_Standard Digest, Vol 28, Issue 7
> To: gps_standard at mailman.qth.net
> Date: Thu, 9 Apr 2009 12:00:01 -0400
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> Today's Topics:
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> 1. GPS-DO w/ LPRO-101 ? (Hugh Duff VA3TO)
> 2. Re: GPS-DO w/ LPRO-101 ? (Bert, VE2ZAZ)
> 
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Wed, 08 Apr 2009 14:13:08 -0400
> From: Hugh Duff VA3TO <hughd at cogeco.ca>
> Subject: [GPS_Standard] GPS-DO w/ LPRO-101 ?
> To: GPS_Standard at mailman.qth.net
> Message-ID: <49DCE934.6070700 at cogeco.ca>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> 
> Due to my recent involvement in 23cm EME I've decided that it's finally 
> time (pardon the pun) to put my VE2ZAZ GPS-DO together.
> 
> I'd like to hear from anyone that is using the Efratom LPRO-101 as their 
> oscillator with one of Bert's boards.
> 
> Also, I have a few of the small Motorola GPS boards. I dabbled with one 
> several years ago and recall that its native format is not NMEA but is 
> capable of it after being initialized accordingly. To avoid re-inventing 
> the wheel, is there anything out there (small board or just micro code) 
> that will do this for me ?
> 
> Replies appreciated.
> 73, Hugh VA3TO
> 
> 
> ------------------------------
> 
> Message: 2
> Date: Thu, 9 Apr 2009 07:34:54 -0400
> From: "Bert, VE2ZAZ" <ve2zaz at sympatico.ca>
> Subject: Re: [GPS_Standard] GPS-DO w/ LPRO-101 ?
> To: "Hugh Duff VA3TO" <hughd at cogeco.ca>,
> <GPS_Standard at mailman.qth.net>
> Message-ID: <BLU0-SMTP788E625DE748ADB0CF368BF1830 at phx.gbl>
> Content-Type: text/plain; charset="Windows-1252"
> 
> Hi Hugh,
> 
> Regarding the Motorola GPS boards, I don't know what exact model of Oncore
> you use, but I believe all Oncore models can be set up using the WinOncore12
> software. It is available for free from Synergy Systems. Before switching to
> NMEA, make sure you set it to "position fixed". If you have battery backup
> on it, you should not have to re-initialize after initial setup.
> 
> There are other programs that have the ability to set up the GPS, but I like
> WinOncore12 because it is custom-designed for the Oncores.
> 
> Cheers,
> 
> Bert, VE2ZAZ


Hi Hugh,

 

Not all the Oncore family members provide NMEA output, the UT+ (which is one of the preferred ones for timing applications) does not. You can send it the message to do so with the WinOncore12 application, but it just stops sending anything. It is only capable of sending Motorola binary data, which is more efficient but not so nice since not every byte has a printable ASCII character. This means that you'll see garbage if you try to look at it from a serial port monitoring application. The specification for the propietary motorola protocol is very clear and easy to work with.

 

I've been doing some work with it for my GPSDO. What do you want the NMEA stream for?

 

Roberto, EB4EQA

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