Modify A CM108 Sound Fob For AllStar

How to modify a CM108 sound fob for use with Allstar

CM108 Allstar
A modified CM108 Sound Fob - Click to enlarge.

Below are my legacy older designs.

My latest design can be seen HERE

Design 1. With regular components: LINK

Design 2. With surface mount resistors: LINK

Design 3. For use with commercial radios such as the Motorola GM340: LINK