iBiquity had a deadline for all stations who hadn't signed up for IBOC (which is most of them), to do so by Sept 30th in order to avoid much higher iBiquity licensing fees... All in an attempt to stimulate the IBOC momentum and get IBOC rolling faster. Probably to iBiquity's disappointment, the FCC approved nighttime IBOC AM operation more than 2 weeks prior to that deadline. I'm sure they would have prefered that Sept 14th FCC approval would have happened AFTER the iBiquity fee-rise, so that late close-to-deadline station would-be sign-ups wouldn't have heard of the mess of AM nighttime IBOC.. - So now, we're all waiting for the big list of all sudden station sign-ups; similar to lists of how many IBOCers are on the air, seen in Radio World. Ya think we'll ever see "the Sept 30 list"?