In a previous article, (Dave Jacobowitz) said:
But how do you get distance? All I can think of is having multiple

I'm pretty sure they guess the distance based on the strength. So a very
strong strike will show as closer than it really is, and a weak one will
show further away.


--
Paul Tomblin, PP-ASEL-IA _|_ Rochester Flying Club web page:
____/___\____ http://www.rochesterflyingclub.com/
___________[o0o]___________