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Remembered Today:

Sounder


centurion
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Reading a diary entry by an officer (who later served in WW1) undertaking an exam on signalling pre war. He gives his marks for Small Flag, Lamp, Semaphore and Helio - all of which I understand, burt also Sounder which I don't; is this a Morse buzzer on a field telegraph or a Ground buzzer (both WW1 equipment) or something else that was or was not used in WW1?

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I would suggest that it was simply a device capable of short and long sounds, rather like a voice mouthing 'dis' and 'dahs'. I recall something like that from my Boy Scout service.

Old Tom

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I would suggest that it was simply a device capable of short and long sounds, rather like a voice mouthing 'dis' and 'dahs'. I recall something like that from my Boy Scout service.

Old Tom

A Morse buzzer?

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A Morse buzzer?

I think so. An apparatus which enabled the electromagnetic telegraph signal to be converted into a useful, audible sound which the operator could read as morse code.

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Hi

This is probably not what the diary mentions but you never know.

The French had 'Sound Signalling' devices in use pre-war and in the early war years probably. This was a continuation of earlier battlefield sound systems, the drum and bugle. The US Army translated and printed earlier French documents when they came into the war in 1917. Some illustrations follow:

post-57218-0-34050400-1404047872_thumb.j

The 'Trumpet' or 'periscope bugle'.

post-57218-0-60627400-1404047920_thumb.j

The 'listening device' or 'ear trumpets'

post-57218-0-73869200-1404047947_thumb.j

The 'Gas operated sending apparatus'.

They would send 'Morse' sound signals.

Mike

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