Motorola Gm339 Programming Software -
Mastering the Motorola GM339 Programming Software: A Complete Guide
The Motorola GM339 is a workhorse in the world of professional mobile radio. Known for its versatility and ruggedness, it’s a staple for fleets, emergency services, and industrial operations. However, to unlock its full potential—including its 255-channel capacity and advanced signaling features—you need to master the Motorola GM339 programming software.
In this guide, we’ll break down everything you need to know about the software, the hardware requirements, and the step-by-step process to get your radio fleet-ready. What is Motorola GM339 Programming Software?
The GM339 belongs to the Motorola Professional Series (often referred to as the Waris platform). Unlike consumer radios, these units require a specific Computer Business Software (CPS) to configure frequencies, PL tones, button assignments, and signaling protocols like MDC1200 or Quick-Call II.
The software allows you to create a "codeplug"—a data file that acts as the radio's "brain," telling it exactly how to behave on every channel. Essential Requirements
Before you start clicking, you need the right toolkit. Attempting to program the radio with mismatched gear can lead to communication errors or, in worst-case scenarios, a "bricked" radio. 1. The Correct CPS Version
The GM339 typically uses the Professional Radio CPS (common versions include R06.12.05 or similar, depending on your region). Ensure your software version matches the firmware region of your radio (AA for North America, AZ for Asia/Pacific, LA for Latin America). 2. Programming Cable motorola gm339 programming software
The GM339 uses an RJ45 (8-pin) connector located on the front microphone port. You will need: An RS232 to RJ45 cable (if you have a native serial port).
A USB to RJ45 programming cable (most common today). Tip: If using USB, ensure the drivers for the Prolific or FTDI chip are correctly installed. 3. A Stable Power Supply
Never program a radio using a weak battery or an unstable power source. If the radio loses power during the "Write" process, it may become unrecoverable. Step-by-Step Programming Guide Step 1: Physical Setup
Connect your programming cable to the PC and the radio’s mic jack. Turn the radio on and ensure the volume is set to a normal level. Step 2: Reading the Radio
Open the CPS software. Always start by clicking "Read Device".
Why? This pulls the current configuration from the radio. It ensures you have a backup and that you are working with the correct frequency bands and settings for that specific hardware. Official Motorola CPS — primary tool; supports full
Save Immediately: Once the read is successful, save this file as "Original_Backup.cp" before making any changes. Step 3: Configuring Conventional Channels
Navigate to the Conventional Personality folder. Here you can: Assign Receive (RX) and Transmit (TX) frequencies.
Set TPL (Tone Private Line) or DPL codes to filter out interference. Adjust power levels (High/Low) for each channel. Step 4: Button and Accessory Configuration
The GM339 has several programmable buttons. Within the software, you can assign these to: Monitor: To open the squelch. Scan: To start/stop scanning lists. Emergency: To trigger a silent or audible alarm. Step 5: Writing to the Radio
Once you’ve input your data, click the "Write Device" icon. A progress bar will appear. Do not touch the cable or the radio until the software confirms the write was successful. The radio will typically reboot once the process is complete. Troubleshooting Common Issues
"Cannot Create Communication Bolt": This is usually a COM port mismatch. Go to File > Setup in the CPS and ensure the COM port matches the one assigned to your USB cable in the Windows Device Manager. Part 6: Modern Alternatives & Emulation If you
"Regional Mismatch": You are trying to use software meant for one region (e.g., Europe) on a radio from another (e.g., Asia). You must use the software version that matches the radio's region.
"Codeplug Version Not Supported": This means your software is older than the firmware in the radio. You will need to source a newer version of the CPS. Conclusion
The Motorola GM339 remains a top-tier analog radio, but its performance is only as good as its programming. By using the correct Motorola GM339 programming software and following a "read-then-edit" workflow, you can ensure your communications remain clear, secure, and professional.
Disclaimer: Always ensure you have the legal right to program and operate on the frequencies you choose. Unauthorized use of restricted frequencies can lead to heavy fines.
1) Software options
- Official Motorola CPS — primary tool; supports full feature set, key(s), and firmware updates.
- Third-party utilities — e.g., CHIRP (limited support), commercial radio shops’ software suites, and specialized cloning tools; may lack full feature access.
- Cloning cables/utilities — hardware + utility that copies radio-to-radio (useful offline or when CPS unavailable).
Part 6: Modern Alternatives & Emulation
If you cannot find a DOS computer, consider these modern workarounds:
Is it freeware?
Technically, no. Motorola still holds the copyright. However, since the hardware has been discontinued for over 20 years, Motorola generally does not enforce copyright on hobbyist usage of RSS. For commercial/public safety use, you should source an original Motorola programming disk (floppy) via eBay.