KMHD (89.1 FM) is a listener-supported, non-profit FM broadcast radio station in Portland, Oregon. For the first 25 years of its operation, the station's studio was located on the Mt. Hood Community College campus in Gresham, Oregon, before moving to OPB's studios. Its transmitter is on the Tualatin Mountains. In addition to its broadcast signal at 89.1, KMHD also simulcasts locally on an HD channel and through streaming audio on the station's website. KMHD's main programming is carried on OPB-FM subchannel HD3 and on SAP audio channel 3 of OPB-TV digital subchannel 4. Although owned by Mt. Hood Community College, the station has never been a part of the college's radio broadcasting educational program.