"Here's some photos showing my 9x with the 3dr radio to bluetooth bridge integrated inside. This has the same functionality of the box proposed by Jeff without the need to carry arond another box/battery. There's a bunch of other mods in…"
"This a good idea and I probably would have purchsed previously. I have added a 3dr Radio and bluetooth module to my 9x transmitter. Saves having to carry round another box/battery. The telemetry powers on when I switch on the transmitter. "