This usually means the software can't see the RIB. Double-check your COM port mapping in the DOSBox config file and ensure your radio is powered on. Frequency Out of Range:
A second, more direct but riskier method is to use a native DOS environment on actual hardware. This involves sourcing an obsolete laptop or desktop computer from the late 1990s or early 2000s that still has a physical RS-232 serial port and can boot into MS-DOS from a floppy disk, hard drive, or bootable USB stick. While this completely bypasses Windows 10's compatibility issues, it introduces its own set of practical problems: finding working vintage hardware, transferring the RSS files onto it, and maintaining aging components. A third, less common approach is to use a specialized DOS emulator like DOSBox, but this is generally unsuccessful because DOSBox does not provide low-level, cycle-accurate timing or direct hardware port I/O, both of which the Motorola RSS is notoriously sensitive to. motorola gm300 programming software windows 10
on is often described by radio enthusiasts as a "digital archaeological dig." Because the This usually means the software can't see the RIB