The so-called “final rules” authorizing IBOC have been published in the Federal Register.
That means AMs in the United States now have a date when they can go IBOC at night: Sept. 14.
Also on that date, stations that want to split their digital signal into several channels can do so without experimental authorization.
Digital broadcasters have been waiting for the new FCC rules to be published since the commission acted earlier this year. See the “final rules”.