It varies from day to day on the same HD channel. Gives me the impression that it's being set at a particular level by a tech somewhere to whatever his personal preferences are when he is the one on duty that day.
I wouldn't mind, but some days you have to turn volume up really high to hear anything, and then another time/different day, on the same HD channel you only need a low setting on your volume control or you get blown back against the wall by the sound pressure!
