LF: Re: GPS-Disciplined BPSK

["Alberto di Bene" <dibene@usa.net>]

Johan Bodin wrote:

> Another alternative is Motorola Oncore UT+ which was designed specifically
> for timing applications. It has a "Site Survey" function which, if started, 
> calculates
> the average of 10000 position measurements and then enters "position hold mode".
> When in position hold mode, it delivers accurate time with as little as one 
> satellite
> in view. The 1PPS output is specified to be within 50ns of "true time" (GPS time
> or UTC, selectable) with SA on. Now that SA is gone, the accuracy is even better
> (there is always a ~30ns sawtooth error due to finite resolution in the 
> software/hardware).
> [snip]
I remember having read that the Oncore has been discontinued by Motorola.
I have been suggested the following GPS OEM unit as a valid (or better) 
alternative
when the primary interest is the 1PPS pulse :  http://www.laipac.com/msg4.htm

73   Alberto   I2PHD