RE: basic questions about dx7 and rx spektrum:
Boy....Dick Hanson nails it again.
I discovered a while back that it's really tough to control a model you can't see. Part of the reason Giant Scale models got as popular as they did! About the time in your life you can afford nice equipment...you can't see anything smaller than 200" in span.
Could you imagine though...."New DSM3 with Satellite Uplink!!!".
Whoa. There'd be "R/C Clubs" springing up all over the middle east.