Cheers for the info. I assumed the Technomate M4 would use the same CNDF format as the Technomate M2. Obviously not. So as long as my faithful M2 keeps working i'll stay with it.
Been using the Technomate 5402 M2 since 2015, No probs, still works fine, but purchased M4. How do i upload my channel list, which is on a USB into the M4.