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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 ACA Cyclone ： ウィキペディア英語版 ACA Cyclone The ACA Cyclone is an outdoor warning siren built by Alerting Communicators of America (ACA) — now American Signal Corporation — in 1968. ==History== The Cyclone was designed in 1968 by Jim Biersach. It is an omni directional, dual tone siren that was primarily intended for Civil Defense warning purposes, but was and is currently used for other outdoor warning purposes. The first version of the Cyclone was called the Cyclone 120. This siren used a 40 horsepower motor, and produced a sound output of 120 dB at a distance of 100 ft. In 1980, the Cyclone was redesigned and renamed the Cyclone 125. It received a new rotor/stator assembly and a new 50 horsepower motor. These changes raised sound output to 125 dB at 100 feet. The Cyclone 125 also featured some cosmetic changes to accommodate the new rotor/stator and motor. 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「ACA Cyclone」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.