Radio Master MT12

This is an open source radio system base on EdgeTX and the radio also support multi protocols including Spektrum's DSM. My old Spektrum DX4 radio having some issue on the screen which I cannot see the menu clearly. I hope to use MT12 to replace it.

First, it is a cost effective solution (if it is really the solution), which cost less than 1/2 of the cost of a Spektrum radio. 

Second, it support not just DSM but a number of other protocols, and since it is open source, I guess the support and evolution of its function will continue to get better

Back to the ground, I have first tried to pair it with Spektrun SR 3500 receiver, spent couple of nights but still cannot figure it out. The SR 3500 still, can pair and work well with the DX4. I then tried the SR 2000 on the ZX5FS kit. It works ! Altho it is still a bit weird that the steering / throttle function need to be further adjusted, but it is the motivation to move on. 

Continue the setup of servo sub trim, ESC calibration, steering EPA ... etc, it is NOT the usual Sanwa menu and the way the menu is arranged possibly make more sense to a radio system developer than an average RC player, especially those grow up with Futaba, Sanwa, (KO is always different, already). 

It works well in today road testing with the old Kyosho ZX5FS.

I still have a few more different models of Spektrum to test, perhaps, just a bit hard to make the SR 3500 works with MT12.