You can toggle between high power (up to 25W–45W depending on model) and low power (often 1W–5W) for different use cases.
The CPS version you are using is older than the firmware version inside the radio.
When searching for "Motorola GM338 programming software free," it is important to understand the legal landscape. Officially, Motorola Solutions requires a paid license and an account on their MyView portal to download current software.
Once the progress bar fills, the radio will automatically reboot and cycle its display. Your new channels are now programmed. Troubleshooting Common Software Errors Error Message / Issue Root Cause motorola gm338 programming software free best
Since the GM338 is an older, legacy model, many hobbyist forums and radio archives host the software for educational purposes. While these "free" downloads are widely available on sites like HamFiles or RadioReference , always proceed with caution:
is a common journey for radio enthusiasts, though it often leads to a complex reality of licensing and regional restrictions. The Best "Free" Software Options and safest way to program a Motorola GM338 is through the GP328/GM338 Customer Programming Software (CPS)
Motorola uses proprietary software to configure its radios. For the GM338, which belongs to the Professional Radio series (War war series / CDM / GM series), the correct software is the or Professional Radio CPS . Software Versions and Compatibility You can toggle between high power (up to
The GM338 supports advanced features like MDC1200 and Quick Call II for private paging.
Navigate the left-hand menu tree to or Personality . Select a channel slot or click add to create a new one.
A massive archive of technical documentation and hardware modifications. Officially, Motorola Solutions requires a paid license and
Because legacy Motorola CPS was designed for Windows XP and Windows 7, modern operating systems may block installation or execution. Right-click the CPS installer or executable file ( cps.exe ). Select and click the Compatibility tab.
version specifically, as software for newer digital radios (like MOTOTRBO) is not compatible with the analog GM338. Essential Setup Requirements
Configure 5-tone signaling, MDC-1200, and Quik-Call II for selective calling and unit identification.
The GM338 uses a standard RJ45-style plug that connects to the microphone port on the front of the radio.