 The latter two stations are owned by Mexican-based Televisora Alco, which is 40% owned by Entravision.All four stations share studios on Ruffin Road in San Diego's Kearny Mesa section; KDTF-LD's transmitter is located on San Miguel Mountain in Spring Valley.The station affiliated with Telefutura, the forerunner to UniMás, sometime in 2006, after talks reportedly broke down with sister station and former UPN affiliate XHUPN (channel 49, now XHDTV-TDT).