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Diagram of simple spark gap transmitter and receiver.

Diagram of simple spark gap transmitter and receiver.

KW synchronous rotary spark gap transmitter

KW synchronous rotary spark gap transmitter

BEACON-ラジオを自作しよう(3)

BEACON-ラジオを自作しよう(3)

low power spark gap transmitter typical of the period.

low power spark gap transmitter typical of the period.

Cohere.jpg

Cohere.jpg

CRL NEWS 1993.3 No.204

CRL NEWS 1993.3 No.204

gyroscopic levitation | And, for $49, National Geographic will sell you a magnetic levitating ...

gyroscopic levitation | And, for $49, National Geographic will sell you a magnetic levitating ...

コヒーラの実験

コヒーラの実験

spark gap inventions | Wrap the bottom 2/3 of the file can with aluminum foil. Taping it ...

spark gap inventions | Wrap the bottom 2/3 of the file can with aluminum foil. Taping it ...

コヒーラ(ブランリー管・ラジオコンダクタ)

コヒーラ(ブランリー管・ラジオコンダクタ)

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