Are you a FT-991/A owner? Got puzzled on why some power settings that you made that were overridden? Well, I was. Plenty of times. Until I finally took a investigative approach and went to find out what are variables involving the power settings. First, under the power perspective, the radio has two main groups: Frequencies and modes. And there are lots of sharing between them. Namely: Frequency-wise, the radio is organized in 4 groups: The HF band (1.8-28 MHz); 50 MHz; 144 MHz 430 MHz. In terms of modes, we have three groups: Data LSB/USB, RTTY LSB/USB, Data FM, C4FM, FM, CW LSB/USB; LSB/USB AM How does that translate? The FM, Digitals and CW all share the same power setting in its respective band group. LSB/USB and AM has its setting of its own also in its respective band group. See a few examples. If you change your power in LSB mode in 7 MHz, this power setting will be the same for all HF bands for both LSB and USB, and will not reflect in 50, 144 and 430; If you change your 50 MHz in FM mode, this setting will replicate to Data LSB/USB, RTTY LSB/USB, Data FM, C4FM, FM and CW LSB/USB only in the 50 MHz band, and will not replicate in any other band Same for 144 and 430 MHz If a image is worth a thousand words: Hope that helps someone. 73 - Rodrigo.