serial1=directserial realport:COM1 (matching your PC's Device Manager setting). 3. Step-by-Step Programming Process
Because the GM950 RSS is a 16-bit application, it will not run natively on 64-bit versions of Windows 10 or 11. You must create a compatible environment. Using DOSBox and Windows 3.1
: To prevent the software from timing out due to modern processor speeds, adjust the DOSBox configuration file: core=normal cputype=pentium_slow cycles=fixed 2500 motorola gm950 programming software work
: Traditional setups require a Motorola RLN4008 RIB to handle signal conversion. However, many modern USB programming cables now include an internal converter circuit, effectively replacing the need for a separate RIB.
The most reliable method for Windows 10/11 users is running the software within DOSBox configured to host a Windows 3.1 installation. You must create a compatible environment
: You must tell DOSBox which physical COM port to use. In the [serial] section of the config file, set:
: You need a specific cable compatible with the GM950, often an RJ45-style connector that plugs into the microphone jack. The most reliable method for Windows 10/11 users
: If you use a serial (DB9) cable, you will likely need a USB-to-serial adapter with a reliable chipset like FTDI or Prolific to ensure the computer recognizes the COM port correctly. 2. Software Configuration for Modern PCs
Programming a legacy radio like the on modern hardware can be challenging due to its reliance on older Radio Service Software (RSS) originally designed for MS-DOS or Windows 3.1. This guide outlines the specific steps, hardware requirements, and software configurations needed to successfully program your GM950 on a modern PC. 1. Essential Hardware Requirements
Comprehensive Guide: Making Motorola GM950 Programming Software Work