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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 Sloper antenna ： ウィキペディア英語版 Sloper antenna The Sloper Antenna is a slanted Dipole antenna.〔Novice Antenna Notebook (D. DeMaw, W1FB)〕〔 (Rund um die Antenne ) (M. Rüegger, HB9ACC)〕 While horizontal dipoles required two large support masts, this antenna type only needs one large mast. It is therefore widely used by radio amateurs with limited space.〔Practical Wire Antennas (J. Heys, G3BDQ)〕 In particular for low frequencies this antenna form is interesting.〔The 160-Meter Sloper System at K3LR in The ARRL Antenna Compendium Vol. 4〕 The angle of the slope is usually between 45°-60° and the lower end of the wire is at least 1/6 wavelength above the electrical ground.〔 The dipole is mostly fed with a coaxial cable in the center. At least 1/4 of the wavelength of feedline must be in 90° angle of the antenna.〔 It is also possible to feed the antenna asymmetrically.〔 (Asymmetrisch gespeiste Sloper-Antennen ) (K. Reinprecht, OE5RI)〕 Due to the radiation pattern this antenna has a good performance for long distance QSOs (contacts) (DX).〔 == References == 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「Sloper antenna」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.