'Gun Talk' Reaching 5 Million More Listeners The only national radio talk show about guns may now be heard on the XM satellite radio system, increasing its potential audience by more than five million. "Tom Gresham's Gun Talk" is a live, three-hour broadcast about firearms—the technical, the topical and the political—hosted by award-winning communicator Tom Gresham. Now in its 12th year on the air, Gresham’s show is carried on radio stations in 50 markets, on the Sirius satellite system, and through live Web streaming and MP3 downloads at the Gun Talk Web site.