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7 résultats pour : morse code

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A train dispatcher using a Morse key to send a message down the line on the railway telegraph system
ARP23A18_139

A train dispatcher using a Morse key to send a mes...

Samuel Finley Breese Morse
ARP07103_460000275

Samuel Finley Breese Morse

Samuel Finley Breese Morse
ARP07103_460000776

Samuel Finley Breese Morse

Samuel Finley Breese Morse
ARP07103_460000777

Samuel Finley Breese Morse

Operator sending a message on a Morse electric printing telegraph
ARP07104_460001307

Operator sending a message on a Morse electric pri...

Operator receiving a message in Morse code on printing telegraph
ARP07104_460001308

Operator receiving a message in Morse code on prin...

Télégraphe sous-marin sans fil
ARP03098_005895

Télégraphe sous-marin sans fil