It gave more granular control over power output than the standard menus. The Legend of the "Free" Version
Websites that archive old radio software often provide access to these tools, including specialized Russian-developed utilities. motorola radius gm300 radio doctor free
Many GM300 users utilize Radio Doctor or modified RSS to enable "out-of-band" programming, allowing a VHF radio meant for 146-174 MHz to operate on Amateur Radio frequencies at 144-146 MHz. It gave more granular control over power output