Windows 10 — Motorola Gm300 Programming Software

The quest to program a Motorola GM300 Go to product viewer dialog for this item.

What Works (Tested Methods)

✅ Best Option: DOSBox + Real Serial Port

Install DOSBox (or DOSBox-X for better serial support)

Edit dosbox.conf:
serial1=directserial realport:COM1

Run the GM300 RSS (usually RSS.EXE or GM300.EXE)

Set CPU cycles to max or auto

Motorola XPR 3000 series (Digital/Analog): Uses Motorola CPS 2.0 (Windows 10 native, USB programming).

AnyTone AT-778UV: A dual-band mobile radio that programs via CHIRP (open-source, Windows 10 native).

Retro PC Dedicated: Buy a $50 used Dell Latitude D630 (native XP or Win98) exclusively for programming legacy Motorolas.

Step 4: Radio Programming

Connect the cable to the radio accessory port.