When RC4 was announced, my first thought was why, so I called them, and they said, "It is to stop the cloning of our transponders" nuff said...

What is really funny is the hypocrisy on these forums..
People will put down, hobby king, flysky and skyrc, and say buy the mainstream line products like airtronics, ko, futaba, but they will buy mrt (which is a clone) and not the mainstream which is amb.

Everybody needs to quit whining and just upgrade.