Programming / Service software for the Motorola Radius GM300
Sep 01, 2019 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. Motorola radio doctor programming software download. Motorola radius gm300 radio doctor for windows 2000xp dos. However this depends on your version of. SHIFT key down. You must release the key when entering the. For example to program 4. Free download radius gm300 radio doctor Files at Software Informer. Motorola GM300 Information Page. After that, you should be able to initialize the radio using the GM300 RSS or write a previously saved code plug to the radio. I'm not a huge fan of the Radio Doctor program. Jul 28, 2018 Motorola gm300 radio doctor download. (KF5RRX) also wrote a great article on how a Motorola Radius GM300 with Windows according to DOSBox programmed.
It has been pointed out to me that this software only works with the GM300 so I have adjusted the page.
Motorola Radius Software
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.
See a video of the software in use
If you want a copy of Motorola Doctor software just join the following group
You will also need a simple interface to connect the radio to your PC. You can make your own or just search on Ebay for 'GM300 programming' or make programming interface from below 'at your own risk'
GM300 programming connection When looking at the radio here are the numbers
Motorola Radius Gm300 Receive Issues
As you can see to make the programming interface for your GM300 is very basic.
Connection your Motorola GM300 for Echolink or IRLP etc.
If you want to use the COS/COR output from your GM300 the COS/COR on pin 8 is (active low). Many interfaces need a COS/COR input that is (active high) at 2 to 5vdc. You can make up a circuit to convert the output from pin 8 or take a COS/COR output from inside the radio that will give you a (active high) output. You will need to access the logic board on the underside of the radio. Remove the front of radio and the bottom cover and lift off the RF shield. See photo below.
Motorola Radius Gm300 Radio Doctor Downloads
If you use thin wire you will be able to feed this out the edge of the 16 way connector. I tied a knot round the connector on the board to stop it being pulled off the board. Take care not to short this COS/COR out because it will damage the radio.