The AT&T earth station was located at the Point Reyes coastal radio station (callsign KPH). Over the years, the facility was owned by Marconi, RCA, GE, AT&T and MCI. Decommissioned in 1997, it is now an historical site within the Point Reyes National Seashore. In 1913, an American Marconi Company transmitting station was established at Bolinas. The receiving station KPH was about twenty miles further north, at Point Reyes (the separation was to reduce noise from the outgoing transmissions interfering with the weak in-bound transmissions). In 1914, the stations at Bolinas and Marshall would allow messages received from New Brunswick, New Jersey to be retransmitted to Hawaii. KPH has been preserved by volunteer members of the Maritime Radio Historical Society and is operated at weekends and on special occasions such as International Marconi Day and the anniversary of the "end of commercial Morse code in America." The station volunteers also use the alternative callsign call sign KSM and amateur radio club callsign K6KPH.
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