KNBR is an AM radio station licensed to San Francisco, broadcasting on a clear channel at 680 kHz from transmitting facilities near Belmont, California. KNBR's non-directional 50,000-watt class-A signal can be heard throughout much of the western United States and as far west as the Hawaiian Islands at night. For several decades, KNBR enjoyed a long history as the flagship station of NBC's West Coast radio operations.
A second station also uses the KNBR brand. KTCT (1050 kHz) is licensed to San Mateo, California, with a transmitter located near Hayward, California. It carried a separate sports format known as "The Ticket". "The Sports Leader" is the on-air branding used by both stations. The KNBR re-branding took place in 2003. Both stations' studios are located at 750 Battery Street in San Francisco's Financial District.
Between the two stations, games of the San Francisco Giants, San Francisco 49ers, Golden State Warriors, Stanford Cardinal, and San Jose SaberCats are broadcast to the San Francisco Bay Area. KTCT is available in the HD format on 1050 kHz.