[time-nuts] NTP server using an OCXO, GPS chip and Raspberry Pi

[Bob kb8tq]

Hi

A GPSDO would be the “next step” if you want to continue on when GPS
is not present. They are a < $100 sort of thing from a number of sources.

Bob

> On Apr 24, 2020, at 4:38 PM, Andreas Kempe <kempe at lysator.liu.se> wrote:
> 
> On Fri, Apr 24, 2020 at 04:22:46PM -0400, Bob kb8tq wrote:
>> 
>> Hi
>> 
> 
> Hello Bob,
> 
>> Assuming you can get a good sky view for the GPS / GNSS device, that’s about 
>> all you need. Feed it into whatever computer you decide to use and move on. The
>> OCXO is simply a power hungry “non contributor” in this case.
>> 
> 
> The reason for wanting the crystal is that I'd like the time to keep
> if we were to lose the GPS signal. I was thinking that an external
> oscillator would be better than the one in the GPS module in the
> case of a lost signal (as a side note, I just thought it would be fun
> to design the circuit). Maybe that is an incorrect assumption?
> 
> Cordially,
> Andreas Kempe
> _______________________________________________
> time-nuts mailing list -- time-nuts at lists.febo.com
> To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
> and follow the instructions there.