Hi
> On Dec 19, 2016, at 11:55 AM, David J Taylor <david-tay...@blueyonder.co.uk> > wrote: > > From: jimlux > > And pretty much any of these will ingest a 1pps + message, rather than, > say, a 10 MHz reference. > > Why not just use the raw GPS 1pps (which is typically good to a few tens > of ns)? GPS coverage/outage and random variation in the GPS 1pps > > A lot of them use a disciplined oscillator to generate the 1pps, so the > oscillator is essentially a long term averager/low pass filter on the > raw GPS output - > ===================================== > > Having the GPSDO/PPS is handy when someone parks outside your location and > carries a GPS jammer. Unless the jammer causes the GPS receiver to go a bit nuts and the GPSDO is dumb enough to follow it. Don’t ask how I know about this particular situation :) Bob > > Cheers, > David > -- > SatSignal Software - Quality software written to your requirements > Web: http://www.satsignal.eu > Email: david-tay...@blueyonder.co.uk > Twitter: @gm8arv > _______________________________________________ > 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. _______________________________________________ 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.