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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Naval Radio Transmitter Facility (NRTF) Niscemi ： ウィキペディア英語版 Naval Radio Transmitter Facility (NRTF) Niscemi Naval Radio Transmitter Facility Niscemi (NRTF Niscemi) is a transmission facility of the United States Navy at Niscemi, Sicily, maintained by the N92 Division of Naval Computer and Telecommunications Station Sicily. The facility houses low frequency (LF) and high frequency (HF) transmitter and antenna systems, and certification of the new U.S. Navy Mobile User Objective System (MUOS) ground terminals is in progress as of early 2015.〔(【引用サイトリンク】title=Naval Radio Transmitter Facility (NRTF) Niscemi )〕 ==Installations== The joint American, Italian, and NATO facility houses an AN/FRT-95A Low Frequency Radio Transmitting System, hosts a USAF HF SCOPE Command, part of the High Frequency (HF) Global Communications System (HFGCS) and a US Navy MUOS Ground Station. The surrounding antenna field supports one 827 foot LF antenna, 44 HF (3–30 MHz) antennas, three MUOS Earth Terminal parabolic antennas, and 2 UHF Directional Helical antennas for satellite direction finding. Several different types of HF antenna are installed, though the majority are no longer in use. 116 Antenna towers are installed which hold aloft 35 antenna transmission lines. Antenna types include four Horizontal Log Periodic (HLPA) with 2 tall towers each, four rotatable log periodic (RLPA), seven Horizontal Omnidirectional Broadband (HOBA) each with 4 antenna towers, seven High Take-Off Angle (HTOA), 11 Dual Mode (DM) antennae held aloft with 7 towers each, 1 Spira-cone, and 10 decommissioned Horizontal/Vertical HF Loop Antennae. The LF Transmitter uses non-line-of-sight propagation for communication with submarines. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Naval Radio Transmitter Facility (NRTF) Niscemi」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.