I use Garmin 18 for this purpose. It's like 80 dollars and it's smaller than a hockey puck. It includes GPS, antenna, and RS232 like interface. You MUST get LVD version. USB version and PC version does not have 1 second PPS output. It's quite sensitive. It's magnetic, so I stuck it on top of 18" rack and it's been running well for few years.
--------------------------------------- (Mr.) Taka Kamiya KB4EMF / ex JF2DKG On Friday, April 24, 2020, 4:23:33 PM EDT, Bob kb8tq <kb...@n1k.org> wrote: Hi 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. Bob > On Apr 24, 2020, at 2:46 PM, Andreas Kempe <ke...@lysator.liu.se> wrote: > > Hello everyone, > > I want to build an affordable quality time source for my computer > club. I've been toying with the idea of using an oven controlled > oscillator from Ebay for getting a reasonable (0,5 ppm frequency > stability) 1 PPS signal and a cheap GSP chip with UART for syncing the > time. I was thinking of running this on a Raspberry Pi with FreeBSD > and its gpiopps driver. > > Is this a reasonable setup for an affordable NTP server? > > Cordially, > Andreas Kempe > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.