It will not work. You need:
Most of this software is considered "Abandonware." Motorola no longer supports the GM300 (discontinued in the early 2000s), and the original authors of the Doctor tools have long vanished. However, due to the nature of the tool, your antivirus will scream bloody murder. These tools were written in assembly language and use memory hooks that modern Windows flags as "hacking tools." Motorola Gm300 Radio Doctor Download
While user-friendly, Radio Doctor is known for several bugs and runtime errors: RadioDoctor@Radios.groups.io | Topics It will not work
If you are looking to program or tune your GM300, here is everything you need to know about the software, the hardware requirements, and how to get your radio back in peak condition. What is Motorola GM300 Radio Doctor? These tools were written in assembly language and