The AT&T earth station was located at t he Point Reyes coastal radio station (callsign KPH), formerly operated by Marconi and later RCA. 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. In 1914, the stations at Bolinas and Marshall would allow messages received from New Brunswick, New Jersey to be retransmitted to Hawaii.56
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 KSM and amateur radio club callsign K6KPH.
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