Borgelt also uses true airspeed and GPS derived groundspeed to
calculate wind speeds in non-circling flight. I found my B 2000 agreed
pretty well with my colleagues' SN10s so I imagine Dave's algorithms
are similar.

Now I have an SN10, I check the measured wind vertical profile with
thaqt predicted from the sounding forecast. Agreement between
forecast, SN10 and other instruments is well within expected errors.

Mike