centurion Posted 27 June , 2014 Share Posted 27 June , 2014 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? Link to comment Share on other sites More sharing options...
Old Tom Posted 28 June , 2014 Share Posted 28 June , 2014 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 Link to comment Share on other sites More sharing options...
centurion Posted 28 June , 2014 Author Share Posted 28 June , 2014 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? Link to comment Share on other sites More sharing options...
horatio2 Posted 28 June , 2014 Share Posted 28 June , 2014 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. Link to comment Share on other sites More sharing options...
MikeMeech Posted 29 June , 2014 Share Posted 29 June , 2014 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: The 'Trumpet' or 'periscope bugle'. The 'listening device' or 'ear trumpets' The 'Gas operated sending apparatus'. They would send 'Morse' sound signals. Mike Link to comment Share on other sites More sharing options...
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