The transmission of telemetry data between the ground base station and APM 2.x (Arducopter), using XBee, is not well documented. The only documentation is Telemetry-XBee, but it does not specify what XBee version is used. I have been checking and I guess is version 1 (this one has P2P link and the others not), but I am not sure.
I would like to know, what XBee modules people use for flying drones? Do they have problems with the APM connection? How can I control the drone remotely using the XBee link with Mavlink protocol?