I think you are correct. I do not think this is supported today.
Also the adaptive modulation algorithm for PMP450 is very good. I have not personally seen a scenario where locking the radio down is needed or desirable.
What is your RSL and SNR for both Downlink and Uplink?
Hello nar6du14, I just wanted to give you a heads up that the upcoming 15.2 release will allow setting of a Max Modulation rate for both uplink and downlink PMP devices. I think this is what you are asking for, correct? Stay tuned to the forums, because we will be releasing 15.2 Beta software soon.