RE: DX7 and AR7000 won't bind
Gary,
Before you proceed with testing your plane, be sure that your battery is big enough for your model. A lot of people are using batteries that are too small for the aircraft they are flying. That results in a reboot of the Spektrum receiver, and possibly a lockout.
Please, Please be sure you do a proper voltage check before flying, and even better, check your battery voltage under load. At the very least, check your voltage while a pal is putting pressure on the ailerons and rudder to simulate flight loads. The battery should never drop below 4.8 volts. (The receiver does a hard reset below 3.5)
When you get everything set up properly, it's awesome.
Good luck, and good flying!
Adam