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Topic Title: Magazine Front Cover
Topic Summary: Morse Code
Created On: 09 April 2012 04:12 PM
Status: Post and Reply
Related E&T article: Titanic's legacy to communications
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 09 April 2012 04:12 PM
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jcoates

Posts: 1
Joined: 08 February 2012

On the front cover of E&T Volume 7 Issue 3, April 2012, the following morse code is displayed:

-- --. -.-- / -.-. .-.. --. / -.-. --.- -..

Which means: MGY CLG CQD

MGY is Titanic's callsign, CQD is the distress call, what is the CLG part? I can't find any reference to this sequence of code being transmitted by Titanic.

Only CQD - DE - MGY.

(There is a full transcript here http://www.hf.ro/)

Anyone?
 09 April 2012 06:31 PM
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gkenyon

Posts: 4472
Joined: 06 May 2002

"CLG" - "Calling"?

So, the message (maybe never transmitted by Titanic) would in theory be:

MGY = "Titanic"
CLG = "Calling"
"CQD" = "Calling any station Distress", predecessor to "SOS" which was also (in)famously transmitted by Titanic

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Eur Ing Graham Kenyon CEng MIET
 12 April 2012 09:33 PM
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johnnmann

Posts: 53
Joined: 18 October 2006

Never heard of "CLG" used as a CW abbreviation for "calling". CQD DE MGY would seem to be the likely signal and this is confirmed on http://www.hf.ro/#trd
 13 April 2012 01:28 PM
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gkenyon

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Joined: 06 May 2002

Originally posted by: johnnmann

Never heard of "CLG" used as a CW abbreviation for "calling". CQD DE MGY would seem to be the likely signal and this is confirmed on http://www.hf.ro/#trd
Agree that the message is probably not "real" (i.e. was unlikely to have really been used by Titanic)

However, original question was asking what CLG is, which is "Calling" as supported by a number of links:
http://www.google.co.uk/url?sa...em1AF5qp7jIzWcLCj9mxhA

http://www.kent-engineers.com/abbreviations.htm

etc.

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Eur Ing Graham Kenyon CEng MIET
 13 April 2012 01:38 PM
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StewartTaylor

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Joined: 18 January 2003

OK, so some signalling conventions of unknown vintage used CLG to mean 'calling'.

The only evidence that this was part of the distress call from Titanic was the cover of E&T, which is not noted as the most technically reliable publication on the planet. The original post indicated that jcoates couldn't find any reference to this sequence being transmitted by Titanic. If Titanic didn't send it, then what other (later) operators may have used the sequence to mean is irrelevant.

Anybody got a 1912 Marconi wireless operator's manual?

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Reality is that which, when you stop believing in it, doesn't go away.
 13 April 2012 07:33 PM
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gkenyon

Posts: 4472
Joined: 06 May 2002

Does an illustration on a magazine cover have to be historically accurate?

(Although it would have been nice to have been?)

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Eur Ing Graham Kenyon CEng MIET
 13 April 2012 09:07 PM
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adamtaylor

Posts: 53
Joined: 08 December 2009

Looking more into the magazines front cover, I would have liked the morse code to be a bit more historically correct

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Fail to prepare...Prepare to fail!

Adam
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