I got one of these, and the PPS looks good, though I don't quite have the equipment to measure it. I am testing by comparing its PPS output to the PPS output of my Oncore UT+ with my 5334B on the "TI A->B" setting. The difference seems to be bouncing around based on two variables: 1) The UT+ sawtooth seems clearly obvious and 2) I don't have it in "position hold", so the difference wanders around a bit. In fact, I haven't looked at the documentation to see if it has a position hold command. I don't have a GPIB interface to quantify things, either. It's a nice little device, and I'd be interested in any measurements that someone with a better testing environment could make.
Bob - AE6RV >________________________________ > From: David J Taylor <david-tay...@blueyonder.co.uk> >To: Discussion of precise time and frequency measurement <time-nuts@febo.com> >Sent: Saturday, August 3, 2013 9:11 AM >Subject: Re: [time-nuts] Radio Shack GPS Module > > >From: Tim Shoppa > >Very likely the Parallax PMB-648, a SirfStar III. A fair number of local >radio shack stores have Parallax and Arduino stuff on the shelves without a >Radio Shack part number. > >http://www.parallax.com/go/GPS >======================================= > >If you want PPS output, and TTL/CMOS levels for serial are OK, this is a >rather nice little module, cheaper than the Radio Shack item: > >http://www.adafruit.com/products/746 > >Lower power as well, and more sensitive, and you can add a battery for backup. > >Cheers, >David >-- SatSignal Software - Quality software written to your requirements >Web: http://www.satsignal.eu >Email: david-tay...@blueyonder.co.uk >_______________________________________________ >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.
