I don't have an MT4 I have an M12 but I would imagine it's not that much different on the MT4. On your transmitter go to bind and see if you have the option. That's where it is on my radio. I know I can bind FHSS-2 and FHSS-3 as well as FHSS-4 and a few others. One of my receivers is FHSS-2 and I use it for VRC Pro with no issues. I would imagine you can do the same.