scrtsqrl you don't need more range......
I tested my Futaba 9C and found it safe at a range of 9830 meters (http://www.rc-cam.com/forum/index.php?showtopic=2203)
. No problem even with the TX antenna half way collapsed pointing at the RX.
I'm sure I could have gone further, but it was not practical to do so this time.
Now I'm using the 14 MZ, and will perform new tests with different types of RX to compare results.
My 2.4 GHz video link was also OK with TX effect similar to 4 micro wave owens (I've been victimized for this earlier, equipment not in use anymore).