Re: [time-nuts] advice sought on basic gpsdo

Hi Bob, I have built several GPSDOs based on Lars's design; comments are below On Fri, May 8, 2020 at 7:07 PM Robert Melville wrote: > Fellow time nutters: > > Any input or advice on the following project would be appreciated. > > I want to make a small, portable, batter-operated clock that wil

Re: [time-nuts] Quick check of a GPS controller oscillator

Hi You have a situation where you have only one standard. It has nothing to compare to. It is very much like asking for the correct time from a single watch. You can look at the various status outputs. You can look at how it is set up. Past that, all you know is that it *thinks* it is doing ok.

Re: [time-nuts] Quality of timing mode GPS vs survey accuracy

Just to add one datapoint to the discussion, I am presently looking at a professional grade receiver ($20k+++), tracking GPS/GLONASS/GALIELO/BEIDOU, 44 sats total as I type this. It reports standard deviation of the XYZ coordinates of 0.76m, 0.44m and 1.3m respectively. It is not crystal clear how