The Motorola GM339 belongs to the (often referred to as the Waris platform). Unlike modern digital radios that use "CPS 2.0," the GM339 relies on specific legacy software known as the Customer Programming Software (CPS) . Software Versions
Used for alignment and internal calibrations (use with caution).
Because this is legacy software, it often runs best on Windows 7 or Windows 10 (32-bit) . While it can run on 64-bit systems, you may encounter driver issues with the USB-to-Serial chipset (ensure you have the latest Prolific or FTDI drivers). motorola gm339 programming software
This is usually a COM port mismatch. Ensure the software settings match the COM port number in your Windows Device Manager.
The GM339 uses a rear 20-pin accessory connector or the front mic jack (RJ45) for programming. A RIB-less (Radio Interface Box-less) USB-to-RJ45 cable is the most common modern solution. The Motorola GM339 belongs to the (often referred
Tip: Always save this "factory" codeplug immediately as a backup before making changes. 3. Configuring Conventional Channels
Never program a radio using only a battery if it’s a mobile unit. Ensure the GM339 is connected to a stable 13.8V DC power source . Step-by-Step Programming Process 1. Installation Because this is legacy software, it often runs
While Motorola has moved toward the MOTOTRBO digital line, the GM339 is prized for its and its Full Keypad Mic compatibility. It excels in complex analog environments where specific signaling (like caller ID or remote stun/kill) is required.
If the radio fails to power up after a write, it may have a corrupted codeplug. Attempt to write your "backup" file to restore it. Why Is the GM339 Still Popular?
