CQD 'SOS,' 'CQD' and the History of Maritime Distress Calls "'SOS,' 'CQD' and the History of Maritime Distress Calls" www.telegraph-office.com/pages/arc2-2.html http://www.telegraph-office.com/pages/arc2-2.html CQD www.telegraph-office.com/pages/arc2-2.html had already been in use ”SOS, CQD and the History of Maritime Distress Calls” 'SOS,' 'CQD' and the History of Maritime Distress Calls 'SOS,' 'CQD' and the History of Maritime Distress Calls SOS, CQD and the History of Maritime Distress Calls history of maritime distress signals K5RW www.telegraph-office.com/pages/arc2-2.html The Telegraph Office Magazine Volume http://telegraph-office.com/pages/arc2-2.html 'SOS,' 'CQD' and the History of Maritime Distress Calls had already been in use CQD R.F. Matthews http://telegraph-office.com/pages/arc2-2.html "'SOS,' 'CQD' and the History of Maritime Distress Calls" "'SOS,' 'CQD' and the History of Maritime Distress Calls" the Telegraph Office http://telegraph-office.com/pages/arc2-2.html http://telegraph-office.com/pages/arc2-2.html SOS, CQD and the History of Maritime Distress Calls "'SOS,' 'CQD' and the History of Maritime Distress Calls" www.telegraph-office.com/pages/arc2-2.html http://telegraph-office.com/pages/arc2-2.html http://www.telegraph-office.com/pages/arc2-2.html History of Distress Calls CQD & SOS (source)