The operative question how significant is the error when used for NTP. If the adafruit is the path of least effort and the error is not significant, I'd spend the extra $20.
-----Original Message----- From: Chris Albertson <[email protected]> Sender: [email protected] Date: Tue, 14 May 2013 15:22:05 To: Bert, VE2ZAZ<[email protected]>; Discussion of precise time and frequency measurement<[email protected]> Reply-To: Discussion of precise time and frequency measurement <[email protected]> Subject: Re: [time-nuts] adafruit $40 GPS OK, not useless, just an order of magnitude worse than something that cost less than 1/2 the price. But you are right that many people only care about hundredths of seconds. The main problem with the nav receivers is they don't do a self survey so there is some position uncertainty. But that only applies if you care about nanoseconds. On Tue, May 14, 2013 at 12:48 PM, Bert, VE2ZAZ <[email protected]> wrote: > Why should a navigation GPS be useless for timing? A lot of people use Oncore > GT+ GPS's with satisfactory results. In the end, it all depends on the > performance you expect from your system... > > Regards, > > Bert, VE2ZAZ > > ------------------------------------------------------------ > Date: Tue, 14 May 2013 09:02:17 -0700 > From: Chris Albertson <[email protected]> > To: Discussion of precise time and frequency measurement > <[email protected]> > Subject: Re: [time-nuts] adafruit $40 GPS > Message-ID: > <cabbxvhuo5upb7oxj7bbrvcuzwdxzm9gexngs90n9n2ic3du...@mail.gmail.com> > Content-Type: text/plain; charset=ISO-8859-1 > > The adafruit GPS has a built in antenna. But you can add an external one. > > But why use this for timing? They don't even give a spec for timing > accuracy and it is likely NOT a timing GPS. It is a navigation unit. > Pretty much useless for timing. > > Also the price is to high. You can do better in eBay, real timing > units sell for as little as $15. > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. -- Chris Albertson Redondo Beach, California _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
