[time-nuts] GPS W/10KHz

Volker Esper ailer2 at t-online.de
Sat Feb 8 06:44:51 EST 2014


Perry,

you don't need 10kHz to build a GPS disciplined oscillator. GPSDOs are
build with control loop response times in the range of some hours, so
the loop will be absolutely happy with a 1PPS input.

To keep the frequency stable at short times, you need a very stable
quartz oscillator instead, something like a TCXO. There are many aviable
on the surplus market, for example

http://www.ebay.de/itm/Vanguard-TCXO-0-1ppm-25-000MHz-Ultra-precision-Golden-Oscillator-/131020893918?pt=LH_DefaultDomain_0&hash=item1e81742ede

or

http://www.ebay.de/itm/HP-10811-60111-10-MHz-Quartz-Crystal-Oscillator-/321311911853?pt=LH_DefaultDomain_0&hash=item4acfaeafad

Volker



Am 08.02.2014 05:10, schrieb Perry Sandeen:
>
> List,
>
>  
> Wrote: where is a good source of GPS receiver modules I need one which has 10kHz output to phase lock a quartz oscillator.
>
>
> Fluke.1 Motorola ONCORE M12+T timing gps receiver
> 1pps 100hz eBay item number:290656401551
>  
>  
> Also RDR
>  
> There is another china seller that has them(10KHz)
> with leads for $90 but is almost impossible to find.  Last time I searched it took me a hour.  But he has a wide assortment. I forgot to bookmark
> his site.
>  
> Regards,
>  
> Perrier
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