Question: Who hosts a national sports radio show on an American broadcasting company that provides three satellite radio and online radio services?
Sentence (from "Howard 100 and Howard 101"): Though the channels were first broadcast on September 29, 2005, Stern could not officially broadcast until January 1, 2006, as Stern was still at WXRK, the terrestrial radio station where he had to finish his FM radio contract.
Relevant evidence: No