If I can remember rightly a file in the GM300 programming software can be modified so that the radio can then be programmed with 40 channels instead of just 8 channels, however I could not find out how to do it as I'm no good when it comes to things like using Hex Editor so I gave up and packed the radio away.
I've now got it back out to have another bash at it and in my google searches there is some software called Radius GM300 Radio Doctor which runs under Windows, I haven't found the software tho just references to its existence and I was wondering if this software had the expanded channel options?
It be nice to have 40 channels on this radio because then I can have all my local 70cms repeater channels on it as well as the 8 simplex channels.
Any help would be appreciated.
Motorola Radius Gm300 Radio Doctor Download Windows 10
The Motorola MaxTrac, Radius, GM300. Covers the GMC and GMR models of the GM300 radio. Service manual is avaialble for download from the Zetron page at. This is a short tutorial on how to program the Motorola Radius GM300 radio with the. Program a Motorola Radius GM300. The GM300 Radio Doctor piece of. Motorola GM300 Information Page By Robert. Welcome to the world of two-way radio programming from Radius a division of Motorola. This manual is targeted for anyone who wants to program features into the Radius GM300 mobile radio. This feature programming, or customizing, personalizes a radio for an individual customer's needs, resulting in radios with unique “personalities.”. After searching for the genuine Motorola program I came across Motorola Radius GM300 Radio Doctor. This program runs fine under Windows XP and will do all the functions that the genuine Motorola radio service software does. Here is the main screen.