On Sat, 03 May 2014 02:38:07 +0100 Tony <tn...@toneh.demon.co.uk> wrote:
> On 03/05/2014 00:59, ewkeh...@aol.com wrote: > > Welcome to the nuts Tony > > Thanks, Bert. > > > You are not specifying exactly how accurate time has to be but in > > my book and based on tests the most reasonable priced GPS with 1 > > pps is a Ublox 6M > > that you can get with antenna for less than $ 22 antenna included > > from _www.DX.com_ (http://www.DX.com) . They have volume discount. > > Shipping is very > > slow but included. They seem to be presently out of the 1 pps > > version but all ublox units have a 1 pps output and I use with and > > without and all I do is > > solder a wire to pin 3. > > Bert Kehren > > As I said in my first post I'd like to achieve an accuracy of better > than 100ns - or 50ns if possible at reasonable cost. > > I had come across the Ublox 6M when I was looking earlier, but I > misunderstood the data sheet and thought it was only the expensive > ($135) LEA/NEO-6T versions which provided timing. Definitely worth a > closer look - the NEO-6M is specced at 30ns RMS which is good enough. > The power consumption is a little higher than I would have liked at > 37mA/3V, but still rather less than others. > > Thanks, > Tony > _______________________________________________ I hope I'm not getting to philosophical here, but isn't the time stamp accuracy measured between receivers? That is, if I have two GPSDO, they are guarenteed to be within X amount of time from each other. Or do you consider a time stamp to be absolute? _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.