The GM350 utilizes an RJ-45 plug (microphone jack) for programming. You will need an RJ-45 to serial (DB9) or RJ-45 to USB programming cable.
Some users utilize a Windows-based version (EVN4633) that reportedly works on Windows 7 32-bit, though it often fails on 64-bit systems.
: A compatible cable such as the RKN4081 (or a USB-to-Serial equivalent) is required to connect the radio's mic port to your computer.
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Would you like a pinout diagram to build a RIBless cable, or the exact DOS commands to force the software to run on a modern PC using a virtual machine? Motorola Gm350 Programming Software Download
The GM350 primarily uses or earlier versions of Customer Programming Software (CPS) .
Check your COM port settings in DOSBox and Device Manager. Ensure the radio is powered on. If using a USB cable, try reducing the port speed (baud rate) to 9600 in Windows.
The world of amateur radio is best shared. What project are you planning for your GM350? Let us know in the comments below, and if you found this guide helpful, please pass it along to a fellow enthusiast!
You might also see the error "Personality data is invalid" when reading or writing to the radio. This often indicates a corrupted radio codeplug or using the wrong software version. Reset the radio's data by writing a known-good configuration file (codeplug) to it. The GM350 utilizes an RJ-45 plug (microphone jack)
He scoured the old forums, clicking through broken links that led to digital dead ends. Finally, on a dusty corner of a European FTP server, he found it—a file labeled GM350_RSS.zip .
Ensure you match the correct channel bandwidth (12.5 kHz for narrow or 25 kHz for wide, depending on regional laws). 3. Write Data to Radio Return to the menu. Connect the radio securely; do not bump the cable. Select F8 (Write Radio) .
Often caused by using a version of the software that does not match the radio firmware version.
So you found a classic Motorola GM350 but need the software to program your frequencies? Here is the quick download advice: : A compatible cable such as the RKN4081
To program the mobile radio, you will typically need legacy software designed for MS-DOS or early Windows environments, as this model is now discontinued. The software is generally referred to as Radio Service Software (RSS) or Customer Programming Software (CPS) . Core Software & Compatibility
Always read the radio data and save a backup before making any modifications.
: Most users use a cable that plugs into the front microphone jack (RJ-45).