Darth_vader said:No, it's not a joke.
Yes, it is a joke, just like HD is a joke. Even if you believe the sales figures cited by iBiquity (which industry analysts, far wiser than I, don't believe for a minute), there just aren't enough HD radios out there in any one market to meet Arbitron's minimum reporting standards, even if all of the HD radios in a given market were tuned to one HD secondary.