Last Updated：2025/12/03
Sentence
アマチュア無線家は、地上およそ90～150kmの高さにある電離層（ケネリー＝ヘイビサイド層）に中周波の信号を反射させて長距離伝播を行うことに頼っている。
Quizzes for review
Amateur radio operators rely on the Kennelly-Heaviside layer to reflect medium-frequency signals over long distances.
See correct answer
Amateur radio operators rely on the Kennelly-Heaviside layer to reflect medium-frequency signals over long distances.
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Related words
Kennelly-Heaviside layer
Noun
Japanese Meaning
約90～150kmの高度に存在する、電離したガスの層。中周波の電波を反射して、電波が地平線を超えて伝播するのを可能にする。
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