[time-nuts] LPRO-101 with Brooks Shera's GPS locking circuit
brooke at pacific.net
Tue Dec 19 14:05:19 EST 2006
It's my take that there are two aspects of the Brooks (no relation)
design that need to be addressed for optimum operation:
1. the filter time constants of the stock design are not correct for a
Rb oscillator, and that can be fixed by getting a custom PIC from Brooks.
2. the TIC although suitable for use with the older Motorola GPS
receivers is not optimum for use with the newer M12+T receivers. There
is not a fix for this now, but maybe in 2007.
Keep in mind that this design does work and that the above items relate
to optimization not bug fixes.
w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml
Brendan Minish wrote:
>My original Question has sparked off quite an interesting discussion and
>I learnt a lot
>Since it seems that the Brooks Shera Project is not the optimum way of
>GPS disciplining a Rubidium Oscillator can anyone here point me in the
>direction of other DIY projects (or even ideas) that might yield a
>time-nuts mailing list
>time-nuts at febo.com
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