I recently purchased a pair of 433mhz telemetry units and they do not seem to be working.
The radios pair with each other, and I can configure them (including the remote one) with the 3DR config tool.
The ATI5 command over putty reveals the following on both radios:
The problem I am facing is that when connecting to my Arducopter with Mission planner 1.1.99 I receive a no heartbeats error.
Another possible symptom is that the ground unit's red light (whichever I choose that to be) blinks much more faintly than the air unit although it is in sync (about once a second)
Any help would me much appreciated.