信しん号ごう電でん波ぱ

noun

signal beam; signal radio wave

Refers to a directed radio wave used for communication or signaling, such as in radar, navigation, or broadcasting.

• レーダーは信しん号ごう電でん波ぱを発はっ射しゃして物ぶっ体たいを探たん知ちする。

  Radar emits a signal beam to detect objects.