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Unspecified / ca 1905

Mechanical Telegraph Sounder

Mechanical Telegraph Sounder

The Smithsonian catalogs Mechanical Telegraph Sounder as telegraph sounder in its Communication, telegraph records.

WHY IT’S INTERESTING

Telegraph sounders convert electrical pulses into audible sounds and are used to receive Morse code messages. The message travels as a series of electrical pulses through a wire. Short pulses make a dot, slightly longer pulses make a dash. The sequence of dots and dashes represent letters and numbers. The pulses energize the sounder’s electromagnets which move a lever-arm. The arm makes a loud “cl

SERENDIPITYA little unexpected
FamiliarWeird

A CLOSER LOOK

The Smithsonian lists the object under Communication, telegraph and dates it ca 1905.

Telegraph sounders convert electrical pulses into audible sounds and are used to receive Morse code messages. The message travels as a series of electrical pulses through a wire. Short pulses make a dot, slightly longer pulses make a dash. The sequence of dots and dashes represent letters and numbers. The pulses energize the sounder’s electromagnets which move a lever-arm. The arm makes a loud “cl

FOLLOW THE EVIDENCE

Smithsonian InstitutionMechanical Telegraph Sounder

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