[time-nuts] GLONASS receiver

Bob Camp lists at rtty.us
Sun Aug 5 22:01:17 UTC 2012


Hi

The part at the link does not appear to have a holdover specification. You probably would do better with a TBolt off of eBay.

Bob

On Aug 5, 2012, at 5:52 PM, Miguel Barbosa Gonçalves <m at mbg.pt> wrote:

> On 5 August 2012 22:45, Bob Camp <lists at rtty.us> wrote:
>> Hi
> 
> Hi Bob!
> 
>> What sort of accuracy do you need? If 1 ms is "good enough", then indeed a GPSDO
> 
> I was looking at http://www.jrmiller.demon.co.uk/projects/ministd/frqstd.htm
> 
> and apparently this might work. I could connect this to one of my
> servers and use the PPS signal on the serial port.
> 
> Anyone has experience with this product?
> 
> Thanks!
> 
> Cheers,
> Miguel
> 
>> On Aug 5, 2012, at 5:36 PM, Miguel Gonçalves <m at mbg.pt> wrote:
>> 
>>> Hi there!
>>> 
>>> I currently have 2 embedded machines connected to a Garmin 18 LVC and a Sure GPS board.
>>> 
>>> They are NTP servers for my company's LAN and I, at the moment, I get sub-ms accuracy over the LAN.
>>> 
>>> Everything is fine but I am a bit worried about the GPS reliability because GPS is ruled by the USA. Would a GPS disciplined oscillator solve any potential problems? A receiver for GLONASS, even though I did not find any at a reasonable price, would be better?
>>> 
>>> An iridium oscillator calibrated, regularly by GPS?
>>> 
>>> Too many questions... but in the end I would like to know what is the best path that I could follow after these GPS receivers.
>>> 
>>> Many thanks!
>>> 
>>> Regards,
>>> Miguel
>>> 
>>> 
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>> 
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