There are a few versions of the programming software available, including:
The Motorola GM950, a popular analog mobile radio from the late 1990s to mid-2000s, remains in active service across industrial, public safety, and amateur radio networks. However, its official programming software (GM950 CPS, R01.00.00–R01.12.00) is obsolete, incompatible with modern 64-bit Windows environments, and legally restricted. This paper presents a methodology for reverse engineering the software’s communication protocol, file structure, and hardware handshake requirements. We analyze the serial command set (RTS/CTS flow control, 9600 baud, 8N1), the checksum algorithm (modified XOR with rolling key), and the memory mapping for frequency tables and signaling options (MDC1200, Quik-Call II). A proof-of-concept open-source programmer is developed using Python and libusb for a generic FTDI cable. Compliance with FCC Part 90 and spectrum management regulations is discussed. This work enables safe reprogramming of orphaned GM950 units without requiring legacy hardware or proprietary licenses. Motorola Gm950 Programming Software
CPS Crashes or Fails to Read
: Program two different transmit power levels (typically between 5W and 25W) per channel. Scan Lists There are a few versions of the programming
Please ensure that you obtain the software from an authorized source to avoid any potential issues with compatibility, security, or licensing. We analyze the serial command set (RTS/CTS flow