I needed a simple cable to program two Motorola GM360 radios using a ribless cable. A search on the internet revealed a diagram. It uses a cable that connects directly to the computer without needing any special box. It is important to note that ribless cables are only suitable for programming CPS code plugs to the radio and not for flashing the radio with new firmware. For flashing the radio with new firmware, you would need a RIB.
Here is my version of the cable. Well I found that your cable length must be as short as possible. Also ensure that your cable connections fits well to the radio and the PC. I 3D printed a cabinet for the USB – TTL adapter. Simple two hour project.
My source: Click HERE
