Interesting... Thanks for the info. ATSC 3.0 is an IP streaming system, so there isnít really any separation of video from audio. I presume whichever substream is considered channel 6.1 is the one the FM carrier would duplicate for audio. I am still surprised the FCC will leave that be, after the relatively stern notice to all the Franken-FMs that they would have to end their analog audio operations. Stick it to the man, Venture!