[time-nuts] Building a GPSDO & trouble using Jupiter-T

Attila Kinali attila at kinali.ch
Tue Jan 31 05:20:42 EST 2012


On Tue, 31 Jan 2012 10:26:15 +0100
Azelio Boriani <azelio.boriani at screen.it> wrote:


> On Tue, Jan 31, 2012 at 3:17 AM, Didier Juges <shalimr9 at gmail.com> wrote:
> 
> > You have to spend good money to get a GPS receiver capable of calculating
> > it's time and/or position more than once per second. I am not aware of that
> > being done for timing applications, but it is available for navigation GPS
> > receivers, such as those used to track race cars (for a race car, one
> > second is an eternity). I have seen navigation receivers capable of 10
> > fixes/second, I am sure there are better ones yet. They cost a lot of
> > money.

> OK, will check the uBlox datasheet, until now I was assuming that the uBlox
> series was capable of more than 1 fix per second in navigation and in
> timing.
> 

They are. According to the LEA-6T data sheet, the navigation update rates are:
LEA-6A: 5Hz
LEA-6S: 5Hz
LEA-6T: 5Hz
LEA-6H: 2Hz
LEA-6R: 1Hz

			Attila Kinali

-- 
The trouble with you, Shev, is you don't say anything until you've saved
up a whole truckload of damned heavy brick arguments and then you dump
them all out and never look at the bleeding body mangled beneath the heap
		-- Tirin, The Dispossessed, U. Le Guin




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