There's some discussion on this forum about the range and reliability of the usual green receivers. After going through all of it, I ordered the RXB-12s.
A couple of examples from earlier threads:
The standard green receivers have poor range, and are also prone to lock up - which I have seen. the receiver suddenly stops working for no reason, from only a couple of feet away.
So this is not a working setup, it's flawed and I can't figure out how to get one of the RXB-12s running.