Complex sentence: KSBW-DT2 simulcasts the majority of the newscasts produced by KSBW, branded as "Action News 8", except for its noon newscast which only airs on KSBW's primary subchannel (8.1).
Split into simpler sentences: KSBW-DT2 simulcasts the majority of the newscasts produced by KSBW, branded as "Action News 8". Local newscast at noon only airs on KSBW's primary subchannel (8.1).