In updating KOHA's TSR data I noticed their broadcast of KBBX-FM on channel 27.4. They waste a lot of bandwidth by adding a cycle video pictures to make a 480i channel.
Their TSR Data is attached.
Iowa PBS adds audio channels the correct way as a 96-kbps audio-only channel. They send IRIS reading service audio programming on their X.99 channels. TSR data of the KBIN and KHIN channels is attached.