The primary means of transportation to this island was the airport, which had a paved military runway, or by ship via a pier and ship channel through the atoll's coral reef system. The islands were wired with 13 outgoing and 10 incoming commercial telephone lines, a 60-channel submarine cable, 22 DSN circuits by satellite, an Autodin with standard remote terminal, a digital telephone switch, the Military Affiliated Radio System (MARS station), a UHF/VHF air-ground radio, and a link to the Pacific Consolidated Telecommunications Network (PCTN) satellite. Amateur radio operators occasionally transmitted from the island, using the KH3 call-sign prefix. The United States Undersea Cable Corporation was awarded contracts to lay underwater cables in the Pacific. A cable called "Wet Wash C" was laid in 1966 between Makua, Hawaii, and the Johnston Island Air Force Base. surveyed the route and laid of cable and 45 repeaters. The Simplex Wire and Cable Company manufactured these cables, with the repeaters being supplied by Felten and Guilleaume. In 1993, a satellite communication ground station was added to augment the atoll's communications capability.
the primary means of transportation to this island was the airport which had a paved military runway or by ship via a pier and ship channel through the atoll's coral reef system the islands were wired with 13 outgoing and 10 incoming commercial telephone lines a 60-channel submarine cable 22 dsn circuits by satellite an autodin with standard remote terminal a digital telephone switch the military affiliated radio system (mars station) a uhf/vhf air-ground radio and a link to the pacific consolidated telecommunications network (pctn) satellite amateur radio operators occasionally transmitted from the island using the kh3 call-sign prefix the united states undersea cable corporation was awarded contracts to lay underwater cables in the pacific a cable called "wet wash c" was laid in 1966 between makua hawaii and the johnston island air force base surveyed the route and laid of cable and 45 repeaters the simplex wire and cable company manufactured these cables with the repeaters being supplied by felten and guilleaume in 1993 a satellite communication ground station was added to augment the atoll's communications capability