KPH is a public coast radio station on the West Coast of the United States. For most of the 20th century, it provided ship to shore communications including telegrams and marine telex service.

Guglielmo Marconi sited and commissioned the building of a wireless telegraphy transmitting station west of Bolinas and a receiving station in Marshall on Tomales Bay in 1913–14. The Marshall station was supplanted in 1929 to support the growing point-to-point business in the Pacific by a new Art Deco-designed facility at Point Reyes Beach on the "G" Ranch. Few of the succeeding generations of antennas—arranged in "farms"—remain at the two sites. However, the radio equipment, ship-to-shore Morse communications, and teletype—some of it dating to the World War II-era—remains intact, has been restored and made functional, and is us