hi,

is anyone using mt4 with rx-471 ?

i am curious which mod type are you using ? fh3 or fh4t ?

I tested with FH3, it works. with FH4T, it works, but the red LED light lighted up in MT4.

Please advise.

The extra light on the MT4 is showing a telemetry connection. Even if you are not using the telemetry sensors (temp, voltage) that portion of the receiver is still active in the FH4T mode.