[aprssig] BALLOON unproto paths

[Jason Winningham]

What is an appropriate altitude for switching to a short (like empty, 
zero hop) path in a balloon?  My plans are for a low altitude path for 
a typical mobile tracker (RELAY,WIDE2-2) and empty for high altitude.

The question is, what's a good altitude to switch over?  I was guessing 
around 10k or 15k ft.

-Jason
kg4wsv