Motorola Gm950 Programming Software New ^new^

The Complete Guide to Motorola GM950 Programming Software (For New Users & Modern PCs)

The Motorola GM950 is a rugged, reliable analog mobile radio from the late 1990s / early 2000s. While the hardware is legendary, programming it today presents unique challenges: the original software was designed for MS-DOS and Windows 95/98, and modern computers (Windows 10/11) lack the required legacy ports and operating systems.

Install the USB cable driver – Download FTDI VCP driver from ftdichip.com. Plug in your cable. Note which COM port it assigns (e.g., COM5).
Create the VM – New VM: Type "Other", Version "DOS". Set memory to 32MB. Create a 500MB virtual hard disk.
Configure Serial Port in VM – Enable serial port → Port Mode: Host Device → Port/File Path: COM5 (or your assigned port) → IRQ: 4 → I/O Port: 0x3F8.
Boot FreeDOS – Mount the FreeDOS ISO, start VM. Install FreeDOS to the virtual HDD.
Transfer RSS – Download the RSS .exe file on your Windows host. Create a shared folder in VirtualBox or copy using a virtual floppy (.vfd file). Unzip the RSS into a folder (e.g., C:\RSS\GM950).
Run the Software – At DOS prompt: cd \RSS\GM950 → then run GM950.EXE. The software should launch.
Read the Radio – Connect cable to GM950 rear 25-pin accessory port. Turn radio on. In RSS, press F2 (Read Radio). If you get "Communication Error," adjust CPU speed in VirtualBox (reduce to 10% execution cap) or retry at 4800 baud.
Edit & Write – Change frequencies, PL tones, etc. Press F3 to save the codeplug. Press F4 to write back to the radio.

Set TX and RX frequencies.
Configure CTCSS (PL) and DCS (DPL) tones.
Assign channel spacing (12.5 kHz or 20/25 kHz).
Program function buttons (Scan, Monitor, High/Low Power).
Adjust priority scan lists.

RSS (Radio Service Software): The original DOS-based software used to program these radios. motorola gm950 programming software new

Once the software is running, the process generally follows these steps: The Complete Guide to Motorola GM950 Programming Software

Final Rating: ⭐⭐⭐☆☆ (3/5)

Functional but ancient — works fine for hobbyists, frustrating for pros. Install the USB cable driver – Download FTDI

📻 Resource: Motorola GM950 Programming Software (RSS)

Looking to program, tune, or reconfigure your Motorola GM950 radio? Here is a quick guide on the software you need and how to get it running.

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