KCNZ-CD, virtual channel 28 (UHF digital channel 21), is a low-powered, Class A LATV-affiliated television station licensed to San Francisco, California, United States and serving the San Francisco Bay Area. Owned by CNZ Communications, LLC, it is sister to Grit affiliate KOFY-TV (channel 20) and low-power station . The three stations share transmitter facilities atop San Bruno Mountain.