This project doesn't seem so complicated but it doesn't work as I expected.
I ordered the 3dr Bluetooth module from 3DR Robotics, which is intended to be used on board the APM 2.6 to send and receive information from a bluetooth enabled Android device (tablet).
I thought it should work the other direction, as a bridge, by doing this:
Remotely power the module and the 3DR telemetry radio with 3 volts - success
Connect the TX and RX on the 3DR radio to the TX and RX leads on the Bluetooth module - success
Pair the module with the android tablet - success
Open up Droid Planner and connect - Binds with the module but does not process any info from the APM.