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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 Specialized Mobile Radio ： ウィキペディア英語版 Specialized Mobile Radio Specialized Mobile Radio (SMR) may be an analog or digital trunked two-way radio system, operated by a service in the VHF, 220, UHF, 700, 800 or 900 MHz bands. Some systems with advanced features are referred to as an Enhanced Specialized Mobile Radio (ESMR).〔See External link: Federal Communications Commission definition of ''SMR'' below.〕 Specialized Mobile Radio is a term defined in US Federal Communications Commission (FCC) regulations. The term is of US regulatory origin but may be used in other regions to describe similar commercial systems which offer a radio communications service to businesses. ==History== SMRs were created when the Federal Communications Commission began to license business and commercial 800 MHz two-way radio systems in the late 1970s.〔The date is unclear. The FCC web site has a page under the Wireless Telecommunication Bureau defining Specialized Mobile Radio Service. It claims licenses were first issued in 1979. Another publication suggests licenses were first issued in 1976. See: "3.6.1 Overview," ''Statewide Radio Interoperability Needs Assessment,'' (Phoenix, Arizona: Macro Corporation and The State of Arizona, 2004) pp. 30.)〕 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「Specialized Mobile Radio」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.