AT&T & RCA Receiving Stations Historical

AT&T & RCA Receiving Stations Historical (HM1XS2)

Location: Point Reyes Station, CA 94956 Marin County
Country: United States of America

N 38° 5.502', W 122° 56.766'

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Ship-to-Shore Communication

The remaining antenna fields and buildings in front of you were established by two cutting-edge worldwide communications companies in 1931. American Telephone and Telegraph (AT&T) radio-telephone station KMI provided two-way voice services between ships at sea or aircraft and telephones on land, sea, or in the air. The Radio Corporation of America's (RCA) station KPH provided commercial communication services to ships at sea through Morse code. Both assisted ships by broadcasting weather and gave top priority to distress calls, providing lifesaving services to ships at sea.
On December 31, 1931, radio-telephone communications was established between the AT&T station and Hawaii. The Atlantic had been bridged by radio-telephone only two years before direct service was established between this station and Sydney, Australia. By 1940, subscribers of the Pacific Telephone Company were linked to over 90 percent of the world's telephones by AT&T's three High Sea's stations: KMI in Point Reyes, WOO in New Jersey and WOM in Florida. Wave propagation technology became obsolete and was replaced by satellite communications. The Point Reyes AT&T station closed on October 13, 1999.

Side-bar on bottom right:
Sky Wave Propagation

Sky-wave propagation is the phenomenon which makes high seas
communications possible. In sky-wave propagation, radio signals are refracted (bent) by electricity-conductive layers in Earth's upper atmosphere (ionosphere) and bounced back to Earth many miles from the point of emission.
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Details
HM NumberHM1XS2
Tags
Placed ByNational Park Service, Point Reyes National Seashore
Marker ConditionNo reports yet
Date Added Tuesday, April 11th, 2017 at 5:06pm PDT -07:00
Locationbig map
UTM (WGS84 Datum)10S E 504726 N 4215990
Decimal Degrees38.09170000, -122.94610000
Degrees and Decimal MinutesN 38° 5.502', W 122° 56.766'
Degrees, Minutes and Seconds38° 5' 30.12" N, 122° 56' 45.96" W
Driving DirectionsGoogle Maps
Area Code(s)415
Which side of the road?Marker is on the right when traveling South
Closest Postal AddressAt or near 19474-19816 Sir Francis Drake Blvd, Point Reyes Station CA 94956, US
Alternative Maps Google Maps, MapQuest, Bing Maps, Yahoo Maps, MSR Maps, OpenCycleMap, MyTopo Maps, OpenStreetMap

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