DB was making the point that we shouldn't be flying airplanes at 10,000 feet altitude.

Has anyone considered that it just might be 'bad headwork' (which is a synonim for stupid) to try to maintain control of a R/C airplane that is over 2 miles away (even if it is straight up?)

What if your telemetry stopped working and you lost control?

Not all the guys doing this are rocket scientists...

Just my $.02