[time-nuts] GPSDO three cornered comparisons

[Tom Van Baak]

> I have an HP 58503A and a Symmetricom 58503B which are behaving quite 
> differently to one another using a common antenna. Using Z38xx, there's 
> almost an order of magnitude difference between the reported ADEVs at 
> 40k seconds (HP:7e-13, Sym:5e-12). Both have 10811 oscillators and are 

Where are you getting the "reported ADEVs"? What counter, what reference, what software?

Did you happen to periodically log any SCPI data during the runs, so that you can compare SV counts, signal strengths, TI averages, and so on? In general it might be good to have a quick look at this mundane data first.

/tvb