Ok I read all the post on this issue and I think I have a handle on it. I started to add 131 (Hex = 83) to 69 (hex = 45) to the number in the PDF for the code I want.. All went well till… I got to tuner preset 9. The hex is 38 the decimal of that is 56. When I add 131 + 69 + 56 I get 256. The hex of that is 100 and every hex check sum after that are 3 digits. What do I put down as mu check sum, 100, or 10, or 00? Please let me know.

Issue two, I will need real time feedback has any one actually gotten this to work? What am I looking for to pars out? I am working with Creston. Any input would be great.