When a transponder definition ends with 910,S2 in a .ini file, it appears as an "auto" FEC when selecting to scan that transponder.

When ProgDVB scans the transponder (as "auto"), it finds nothing and it is neccessary to manually set the FEC to 9/10 in order that ProgDVB identifies and lists the channels on the transponder.

Best example of such transpoders are those found on 23.5e.