RE: Redundant Receivers
Model Safety Number system only applies to FHSS3 receivers.
You can bind any number of receiver to the same transmitter.
So, for example. I have two receivers in my B17, one for all the servos in the fuselage and one for all the servos in the wing. This makes assembly much easier.
I have the safety model number set in the Modulation screen.
I then bound each receiver just as you always would.
Now both receivers work with that airplane.
There's no delay or lag between the receivers.
Sanwa does recommend that all of the antennas be as far apart from each other as possible. And they recommend that you complete a thorough range test from different angles to make sure your install is good.
That's it, that's all there is to it, and it works great.