If the software says "No Communication" or "Radio Not Supported": Check that the radio is powered on. Ensure the RJ45 plug is seated firmly in the mic port. Lower the "Baud Rate" in your COM port settings.
Go to your computer's Device Manager and note the COM Port number assigned to your cable (e.g., COM3). In the Motorola software, ensure the "Setup" or "Comm" menu matches this port. Motorola Gm950 Programming Software
Before making any changes, always click "Read Device." Save this original file as a backup. If something goes wrong during programming, you can always flash this "Codeplug" back to the radio to restore it. 4. Key Programming Tips for the GM950 Frequency Ranges If the software says "No Communication" or "Radio
If using a USB programming cable, install the Prolific or FTDI drivers first. Go to your computer's Device Manager and note
Ensure the frequencies you enter fall within the hardware limits of your specific GM950 model (VHF 136-174MHz or UHF 403-470MHz). Entering frequencies outside these ranges may result in an "Out of Range" error or a radio that fails to lock on frequency. Bandwidth (25kHz vs 12.5kHz)
Check the model number on the back of the unit. This determines whether you need the standard GM950 software or the version for the GM950 Plus/Enhanced models.