there used to be a wardriving rig with a serial gps puck that put time from gps into the map plotter, don't know how accurate it was, id assume pretty accurate
On Wed, Sep 6, 2017 at 8:02 AM, Jesse Dupont <[email protected]> wrote: > How about the Veracity TimeNet Pro? More money than a Pi/BBB with GPS > receiver, but probably way simpler. > > ------------------------------ > *From:* Af <[email protected]> on behalf of Mike Hammett < > [email protected]> > *Sent:* Wednesday, September 6, 2017 5:11:17 AM > *To:* [email protected] > > *Subject:* Re: [AFMUG] GPS'd NTP > > I'm pretty sure the one I looked at used the GPS receiver in the cell > modem to supply the time vs. CDMA. > > > > ----- > Mike Hammett > Intelligent Computing Solutions <http://www.ics-il.com/> > <https://www.facebook.com/ICSIL> > <https://plus.google.com/+IntelligentComputingSolutionsDeKalb> > <https://www.linkedin.com/company/intelligent-computing-solutions> > <https://twitter.com/ICSIL> > Midwest Internet Exchange <http://www.midwest-ix.com/> > <https://www.facebook.com/mdwestix> > <https://www.linkedin.com/company/midwest-internet-exchange> > <https://twitter.com/mdwestix> > The Brothers WISP <http://www.thebrotherswisp.com/> > <https://www.facebook.com/thebrotherswisp> > > > <https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg> > ------------------------------ > *From: *"George Skorup" <[email protected]> > *To: *[email protected] > *Sent: *Wednesday, September 6, 2017 12:28:30 AM > *Subject: *Re: [AFMUG] GPS'd NTP > > Well, yeah, you can do CDMA for clock sync, too. > > I've seen Arduino and Pi add-on cards that contain a GPS receiver and you > basically feed the 1PPS via GPIO or something like that. I don't really > want to go there. > > I'll keep looking around and see what I can find for standard-ish PC > hardware. > > On 9/5/2017 9:56 PM, Mike Hammett wrote: > > USB cell modem? > > > I've asked all of our GPS capable vendors to provide this on the radio. > > > > ----- > Mike Hammett > Intelligent Computing Solutions <http://www.ics-il.com/> > <https://www.facebook.com/ICSIL> > <https://plus.google.com/+IntelligentComputingSolutionsDeKalb> > <https://www.linkedin.com/company/intelligent-computing-solutions> > <https://twitter.com/ICSIL> > Midwest Internet Exchange <http://www.midwest-ix.com/> > <https://www.facebook.com/mdwestix> > <https://www.linkedin.com/company/midwest-internet-exchange> > <https://twitter.com/mdwestix> > The Brothers WISP <http://www.thebrotherswisp.com/> > <https://www.facebook.com/thebrotherswisp> > > > <https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg> > ------------------------------ > *From: *"George Skorup" <[email protected]> > <[email protected]> > *To: *[email protected] > *Sent: *Tuesday, September 5, 2017 9:19:28 PM > *Subject: *[AFMUG] GPS'd NTP > > I've got a few CentOS machines running around the network doing various > tasks, one being NTP for radios, routers, switches, etc. I've been > having some issues with us.pool.ntp.org lately. I switched to > time-(a,b,c,d).nist.gov. Apparently those are pretty busy. > > So is anyone else using GPS to feed NTPd? From what I've been reading, I > guess I need a 1PPS capable receiver. Does that exist in a simple USB > package? That would be ideal, preferably with an SMA female for an > external antenna where needed. Looks like none of the cheap shit I'm > finding on Amazon has PPS output. > > > >
