WMAL, Washington's last AM-only news/talk radio station, and the last remaining heritage AM signal in the market, moves to FM at noon Monday.

WMAL's new owner, Cumulus Media, is scrapping the rock format on 105.9 FM and instead listeners will hear WMAL's conservative talk format there. (That includes syndicated hosts Rush Limbaugh, Sean Hannity and Mark Levin, and a local morning show.)

WMAL will continue to broadcast at 630 AM, but will expect most of its audience to be on FM, where its main competitor, all-news WTOP, moved in 2006.