The GM338 is predominantly an Asia-Pacific (AZ) region model. You must use the AA or AZ regional versions of the software. Using an LA (Latin America) or EMEA (Europe) CPS will result in a "Radio Not Supported" error.
Motorola GM338 is a legacy analog mobile radio that requires specific Customer Programming Software (CPS) to configure its 128 channels and features. www.motorolasolutions.com Software Options
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The GM338 utilizes an connected to the front microphone jack for programming.
A compatible cable to connect your radio's accessory port to your computer's USB or serial port. Computer Requirements: Older versions of this software often run best on Windows XP motorola gm338 programming software free best
Do not touch the cable or turn off the PC/radio until the software confirms the write process is 100% complete. The radio will typically emit a self-test chirp and reboot when finished. Troubleshooting Common Errors "Cannot Create Component" / "Registry Error"
: Your radio firmware region doesn't match the software region. You will need to source the correct regional variant of the software or use a codeplug modification tool to bypass the region check. The GM338 is predominantly an Asia-Pacific (AZ) region model
: Traditional Motorola setups required a Radio Interface Box (RIB) to manage voltage. For the GM338, a modern "RIB-less" USB-to-RJ45 cable handles the voltage conversion automatically, making the process much simpler. Step-by-Step Guide to Programming the GM338
Setup MDC1200, Quick Call II, and DTMF signalling. Motorola GM338 is a legacy analog mobile radio
When it comes to programming your GM338, there isn't a single "best" free solution, but rather a few distinct paths, each with its own set of trade-offs. Here are the primary tools to consider: