OK, here's what I've done so far.....
Got a 2.4 gig setup from Wirelessvideocameras.com at about $350 and it works pretty well.....
Got a 900 mhz setup from supercircuits.com - about $350 + tax - very poor performance in a plane.
Went to
www.grz.com and got their book from Gordo on getting your Ham license (no code) for $15. Read thru the book and have passed the test at qrz.com 4 times so I think I'm ready. Cost all of $10 to have the test administered.
Get the ham license - it's worth all the other good things you can do in R/C.
I am currently undertaking the arduos chore of registering and licensing under FCC Part 90. WOW! What a paperwork nightmare! But it allows me to use 2.4 gig commercially.
Go from there and then let us know how you do!
CenTexFlyer