'SOS,' 'CQD' and the History of Maritime Distress Calls http://telegraph-office.com/pages/arc2-2.html (source) CQD (source) The Telegraph Office: SOS SOS, CQD and the History of Maritime Distress Calls CQD history of telegraphic distrress signals CQD distress call was not even a settled-on standard http://telegraph-office.com/pages/arc2-2.html www.telegraph-office.com/pages/arc2-2.html www.telegraph-office.com/pages/arc2-2.html http://telegraph-office.com/pages/arc2-2.html call sign “ ‘SOS,’ ‘CQD,’ and the History of Maritime Distress Calls,” CQD History of Distress Calls CQD & SOS CQD distress call was not even a settled-on standard SOS, CQD and the History of Maritime Distress Calls “ ‘SOS,’ ‘CQD,’ and the History of Maritime Distress Calls,” CQD R.F. Matthews history of telegraphic distrress signals CQD