The original software was built for MS-DOS . It does not run natively on modern 64-bit operating systems like Windows 10 or Windows 11.
Use an old, native MS-DOS or Windows 95/98 PC equipped with a physical, hardware DB9 Serial (COM) port.
To install the Motorola GM350 programming software, follow these steps:
: Adjust transmit power levels for different channels. Motorola Gm350 Programming Software Download
The GM350 belongs to Motorola’s legacy "Radius" family. Because it was engineered in the 1990s, its programming environment is vastly different from modern, USB-based digital radios.
Since the GM350 software is designed for DOS, it will not run directly on 64-bit Windows.
: Common versions include RSS R03.01.09 or R03.01.08 . Download Sources : The original software was built for MS-DOS
Use an emulator like DOSBox on a modern PC, mapping a USB-to-Serial adapter to a virtual COM1 port inside the emulator settings. 🛠️ Step-by-Step Programming Instructions
Disclaimer: This article is for informational purposes only. Always obey your local radio frequency regulations. I am not responsible for any damage that may occur to your equipment while following these instructions.
The safest places to find archived versions of the GM350 software are dedicated radio communication archives. Websites like , Repeater Builder , and localized amateur radio club repositories frequently host legacy files for educational and restoration purposes. 2. File Packages to Look For To install the Motorola GM350 programming software, follow
The GM350 is a relic from the age of Windows 3.1 and DOS. Its native environment is a . Running the software on a modern 64-bit PC is extremely difficult, even using Windows' compatibility modes. The "divide-by-zero" speed error is a common crash. Here are three proven methods to get the job done:
What (VHF or UHF) is your specific GM350 model? Share public link
Connect the cable to the microphone jack while the radio is turned off. Turn on the radio.
Restart your computer, enter the BIOS, and boot directly from the USB drive. Navigate to the directory and launch the software. 5. Step-by-Step Programming Process
Operating a GM350 requires an appropriate radio license (e.g., GMRS, Business, or Amateur Radio license). Transmitting on unauthorized frequencies is illegal and subject to severe fines.
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