Motorola Gm339 Programming Software

Check Device Manager, update the COM port settings in CPS, and close conflicting software.

Unlike modern radios that use a simple USB-to-Serial chip, the GM339 originally required a Radio Interface Box (RIB)

Install the CPS software on your workstation. If you are using a USB cable, plug it in and check your to identify which COM Port (e.g., COM3) has been assigned to the cable. 2. Reading the Radio Connect the cable to the radio's microphone port. Turn the radio on. In the software, go to File > Read Device .

To prevent unwanted interference.

If using a USB cable, ensure it uses a high-quality chip (like FTDI or Prolific). Cheap clone chips often suffer from driver errors on Windows 10/11.

In Motorola terminology, the configuration file containing all the radio's settings is called a . Reading the Radio (Crucial First Step)

The software will display a progress bar as it downloads the "codeplug" (the configuration file). motorola gm339 programming software

: Websites like Reddit, Ham Radio forums, and others dedicated to amateur and professional radio communications often have threads and sections dedicated to radio programming and troubleshooting.

Click the icon on the toolbar (or press Ctrl + R ).

Professional Radio CPS (often abbreviated as "Pro Radio CPS"). Check Device Manager, update the COM port settings

The GM339 has 4 customized buttons that can be programmed for one-touch access to specific operations.

Configure specialized functions like PTT-ID (sending a unique ID whenever you transmit), Radio Check, or Selective Calling. Writing to the Radio

Set up 5-tone selective signaling, PL/DPL codes for private calls, and PTT-ID. In the software, go to File > Read Device

: The official software for this series is the Motorola PMVN4039 CPS. Note that it is distinct from the software used for GM338 or GM328 models.