GPS watches displaying the "correct" time.

[ronalddheld]

I thought that I would try to gather all of the GPS watches, analogue or digital, which computed and displayed the correct time, including leap seconds and compensating for processing delays.

[William2]

That would be very helpful. I would love to have a GPS watch but , as far as I can see, they are rather large and heavy for my taste.

[gaijin]

I thought that I would try to gather all of the GPS watches, analogue or digital, which computed and displayed the correct time, including leap seconds and compensating for processing delays.

After the latest Software/Firmware update which I installed last week, I am experiencing even faster satellite lockups and absolutely no delay in time display on my Garmin 310XT.

Here is a pic of the watch in front of the Time.is display:



For anyone interested, the updates are available free of charge on the Garmin web site. Latest versions are:

Software Version: 4.50

GPS: 2.10

Hope this is what you are looking for.

HTH

[ronalddheld]

That is a start. Any more besides the Appleseed and GPS Astron?

[gaijin]

That is a start. Any more besides the Appleseed and GPS Astron?

I should have a Garmin Fenix in hand this week or next - I'll post it here when available.

Aren't there two main types of GPS watches - those which are continually synchronized with a satellite signal (like my 310XT) and those that only sync on demand or every couple of days (like the Appleseed and Astron)? In the case of the latter, I suggest that it might be useful to gather info on accuracy immediately after a sync and also after 24/48 hours. This would yield some info on the intrinsic accuracy of the movement.

May I ask what the goal of your data gathering is? Are you attempting to prove/disprove or establish something?

HTH

[ronalddheld]

My goal is the have one location for GPS watches that might be usable as a time reference.

[petew]

After syncing them both, my Garmin S1 appeared to be just a half or tick off (slow) to the Time.gov site and the appleseed seemed to be moving right in sync with the seconds.

I wonder which one was the most accurate...time.gov, the S1 or the Appleseed?

[ronalddheld]

Synch your PC witb Catalin's software and do a comparison?

[artec]

My understanding from their published specs is that the Appleseed and the Astron movements are, like RC movements, "normal" quartz except for the correction received from GPS, so, presumably, an individual example will vary according to where it happens to fall within the +/- 15 seconds per month (or thereabouts) range. I have an RC Citizen that gains a measurable amount between corrections but I've never bothered to test/calculate its monthly rate. I have an Astron on order but it will only arrive a couple of days before I set off on a fortnight trip to Germany and England so I shall not have access to my Arbiter GPS clock till I get back.

When I do, I'll see how much it varies between corrections. However, from what the spec says, I expect that its uncorrected behavior will just be the luck of the draw, within the range. Why should it be any different?

[ronalddheld]

I will wait to see some data before deciding whether to get the GPS Astron.