[time-nuts] GPS for Nixie Clock

John Swenson johnswenson1 at comcast.net
Mon Jul 11 19:54:00 EDT 2016

I take it the "T" is a time specific version, I see there is also a NEO 
M8T, I presume this include the position hold etc?


Seems like an interesting board with a NEO-M8T, a UF.L antenna 
connector. The little breakout board gives a direct USB interface as 
well as timing signals. With the USB it looks like it should work with 
the U-center software for evaluation and configuration which would 
probably make it easier to get going.

Does this seem like a reasonable board to get?


John S.

On 7/11/2016 8:49 AM, Mark Sims wrote:
> One thing to consider about using a module with a built-in ceramic patch antenna is that usually the antenna cannot be removed and the modules have no support for an external antenna.  If you do have problems getting a signal it can be very difficult to add an external antenna.   You might want to try moving one around the house and seeing how well it works.   It usually takes an indoor GPS a while to acquire lock to the GPS satellites.
> If you want a time-nutty-ish GPS receiver,  search Ebay for "Ublox LEA6T".   There are some units available from China that have one (plus a ceramic antenna) in them for a decent price ($30).  Normally an LEA-6T GPS receiver is over $100...   But to get the full benefit of a GPS timing receiver requires quite a bit of configuration and setup.
> Another receiver worth looking into is one from the Ublox 8 series.  They can track and work with GPS, Glonass, Beidou, and other nav systems.   Mine is currently tracking 25 satellites (GPS/GLONASS/SBAS) with an indoor antenna.  It cost around $25 and came with a removable antenna.  It has two programmable PPS outputs (only one is brought out to the connector)... you can set one to 10 KHz. 		 	   		
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