sentences:  As part of the Mexican government plan to move as many AM stations as possible to the FM band, XHRF-FM 103.9 signed on February 3, 2012.XHRF began broadcasts in HD Radio on October 28, 2012.The HD2 stream relays XHOF-FM "Reactor", while HD3 features XHIMER-FM "Opus", both IMER stations in Mexico City.