Not much use to Jason, when his Garmin or IGC logger won't record that
velocity information. Or are you suggesting he look at the velocity
screen and take notes while falling (I mean flying).

Jonathan Gere


Mike Borgelt wrote in message . ..

Jason,

GPS does not use the sample to sample differences to give you
velocities. The 3 D velocities are done from Doppler shifts.

Mike Borgelt