Motorola SM50 CM108 Mod

App_rpt-users
1

Hi all,

I am VERY close to setting up my ASL node, however…I tried to modify a CM108 (this time correctly) but…it didn’t work. Allmon kept saying, whenever I plugged in my CM108 card, that it detected the COS signal and it keyed the PTT, however, I know that both of these were false. I constructed it following this link here: How To Modify A CM108 for Allstar latest version - allstar setup.com %.

Is there something I am doing wrong? What are the correct pins that should be connected to the SM50?

Thank you!

2

Make sure the ASL config file has the correct logic level (asserted high or asserted low) for your hardware.

Bob
K6ECM

3

I have verified that the logic levels are correct and that I’ve connected the radio to the right pins. Any opinions on the RepeaterBuilder RIM-USB fobs? I have some more CM108s but I’d rather not burn through them although they’re like a dollar a piece and perhaps a pre-made solution would be best.

4

I am not sure if this will still be helpful as the post is a bit old but I had tried the link you shared and for some reason I couldn’t get it working on baofeng 888 or baofeng uv82.

The one that worked for me was How to Modify A CM108 Sound Fob For Allstar. - allstar setup.com where there were breaks in the track and a transistor.

I am not familiar with your radio however just wanted to share what worked for me.