Pixhawk Telemetry Setup

Hello, gentlemen.
I’m learning step by step about Pixhawk.
Thanks to valuable advice and posts here, I can manage to solve many problems and succeed in setting up a very stable and crisp flight. But another problem has come up to me.
I attached telemetry system to my Hexacopter.
I set up the radio according to the Arducopter’s instruction.
But strangely during the last flight, the connection was cut off intermittently and the symptom got worse if the drone went farther away more than 10 meters or so.
Now I’m checking the setting process again.
And I found something strange.

My question is~~
In the telemetry setting screen, why doesn’t the information about version ,frequency and device appear
on the top of the right Remote Panel?
By any chance, is it related with the connection problem?

Thank you in advance for you kind help.