The GM300 was Motorola's next step in the MaxTrac / Radius mobile product lines. The schematics are remarkably similar. You can even interchange some boards between the GM300 and MaxTrac radios. Like the MaxTrac, the GM300 line has been discontinued by the manufacturer. Software radius gm300 radio doctor I just got my laptop upgraded from windows 8. Click on the image to enlarge it. Radio Doctor for MOTOROLA RADIUS GM300 versi 1. Radio Modification and Descriptive Articles: Caution: A lot of the information in the articles. The RSS is shipped on. The XV- series seems to all be 1 channel radios. Motorola radius.
Programming / Service software for the Motorola Radius GM300
It has been pointed out to me that this software only works with the GM300 so I have adjusted the page.
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.
8 product ratings - Motorola GM300 Two Way Radio, CPI MCP200G PANEL, HMN3000B DESKTOP MIC. Motorola Radius GM300 465-490 MHz UHF 40 Watt Two Way Radio w Mic. USB Programming Cable for Motorola Mobile CDM GM PRO Radio Maxtrac CDM750 CDM1250 CDM1550LS CM200 CM300 GM300 GM328 GM338 GM340 GM360 GM380 GM1280 5.0 out of 5 stars 4 $19.99 $ 19. 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.
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
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 For Windows 2000/xp Download
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.