sentences:  "Magic 810," which also broadcast in AM stereo for a time, had a loyal audience and respectable ratings for an AM daytimer, but was chiefly popular with listeners aged 55 and older, which led Birach to switch the station's format to brokered Spanish programming, under the name "La Poderosa" (Spanish for "the powerful one") using the slogan "Con Sentimiento Mexicano".On November 7, 2008, the "La Poderosa" programming and format moved to WMFN AM 640, after that station's prior leasee, Tyrone Bynum, vacated the station, which, at that point, WMJH retooled its format to lean more towards Spanish-language Adult Contemporary.In April 2012, Birach Broadcasting sold WMJH along with Owosso, Michigan station WOAP to Cano's Broadcasting.