The Motorola GM338 is part of the professional series of radio transceivers. To change frequencies, set up signaling (PL/DPL), configure channels, or adjust power levels, you need the Motorola professional radio CPS.
Support Locating Mototrbo Firmware Packages in the Customer Hub The Motorola GM338 is part of the professional
Programming two-way radios requires a valid radio license (such as an FCC license or local equivalent). Always ensure you are authorized to operate on the frequencies you program into your device. Use third-party software repacks at your own risk. Always ensure you are authorized to operate on
Before downloading or installing any repack, verify that your computer meets the technical baseline required to interface with the radio safely. Requirement Requirement Open your computer's and expand the Ports
Open your computer's and expand the Ports (COM & LPT) section. Note the number assigned to your USB serial cable (e.g., COM3). 2. Read the Radio (Backing Up Existing Data)
Ensure the frequencies you enter match the hardware limits of your specific GM338 model (VHF 136-174 MHz or UHF 403-470 MHz). Entering out-of-band frequencies can cause error tones.