ゲルマラジオの実験（Experiment : a germanium-diode detection radio）
本当はマイクアンプにではなく、セラミックイヤホンを繋ぐと受信した電波の電力だけで放送を聴くことができます。動画の最後に出てくる超単純化ラジオにセラミックイヤホンを組み合わせれば、あちこち電波を探して歩き回れます。電波が思いの他強く、またいろんなところに届いていることに気がつくでしょう。是非試して欲しいです。 A large coil of long wire, a capacitor and a germanium-diode give us fascinating voices from radio waves.
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【電源不要】ジャンクで作る 塹壕ラジオ FOXHOLE RADIO
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[Eng sub] Making a Foxhole radio. Very primitive
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I want to make a crystal radio but I can't buy any old diodes. Is there anything I can do?
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