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.
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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.
Attached Files