DescriptionMorse Code - Comma.ogg English: Morse code - Comma Date 29 March 2014, 18:35:16 Source Own work Author JoeDeRose Permission (Reusing this file)...
CHAPTER I. TELEGRAPHIC MANIPULATION. 1. Telegraphic Signals.—The Morse code of telegraphic signals are forty-five in number, and are composed of three...