File:Tokaido Shinkansen signal communication booster & low antenna for tunnel.jpg

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日本語: 東海道新幹線のトンネル内およびトンネル間の列車無線増幅装置と補助アンテナ。大磯町・二宮町・小田原市の第1～3生沢・小原・第1～3根柄見・借宿・開戸・天神山・弁天山の各トンネルは間隔が短く、軌道に大磯丘陵の山裾が迫るために、無線電波の直進性を確保すべく、トンネル間に高さの低い（隧道径高に合わせた）アンテナとブースターを設置している。
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Author 電車(新幹線)でゴー！

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