KMJ uses a 50,000 watt transmitter into a directional antenna consisting of 4 mast radiators situated at 36-39-37.2 N 119-20-52.8 W, 36-39-29.2 N 119-20-52.8 W, 36-39-27.9 N 119-20-48.3 W, 36-39-36.5 N 119-20-47.1 W; each of the towers is tall. Due to its location near the bottom of the AM dial, KMJ's daytime signal decently covers much of the Central Valley, as far north as Sacramento and as far south as Bakersfield. Much of the San Francisco Bay Area gets a city-grade signal.