#102 Reprogramming an old CM140 radio
If you do not have the code plug password or a saved code plug with the radios serial number then this post is for you.
I recently came into possession of 2 Motorola CM140 25W radios. These radios belonged to my grandfathers old security company which is now dissolved, however amongst a lot of the kit I was able to save a few gems.
Upon inspection these radios were in immaculate condition despite there age. I was able to power up both radios only to find that they were programmed to one channel and when I used Commercial Series CPS (customer programming software) I could not read or write to the radio since the code plug was password protected.
Luckily I found a sample code plug for the model of CM140 radio I had. This allowed me to clone and change the password of the radio using the sample code plug now I can read/write to the radio
I have created a step by step document on my GitHub page here.
Hi
I need a Motorola cm 140 rs 232 to rj 45 program cable. Thank you for your cooperation
Kind regards
I’m sorry, I need the wiring diagram to prepare the cable.
There’s a schematic at the bottom of the page.
Work a treat with ch340 chip
Work a treat with a ch340 chip module thanks for posting
Greetings!
I think that Pin 4 and 5 on the RJ45 connector should be swapped in the schematic (Gnd to Pin 5).
Anyway, thanks for the Post!
73
Hi there,
Thanks for the comment.
It should be correct.. worked with mine in that configuration.
Though I took it with a grain of salt.