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Shortwave is suitable for long-distance communication and is often used in amateur radio.
In times of disaster, shortwave communication can play an important role even if regular communication networks are disrupted.
During World War II, shortwave broadcasting was used as an important means of propaganda and information warfare.
By utilizing the reflection of the ionosphere, shortwave can transmit radio waves to the other side of the Earth.
Kanji that make up this word
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