The Morse Code of Signals is not hard to learn but it requires much practice to "receive" even when the message is sent slowly. The old-fashioned instruments were fitted with a ribbon on which the dots and dashes were recorded, but all modern operators depend on the ear.
The code is as follows:
Punctuation
Comma, . ––. ––
Semi-colon, Si
Colon, Ko
Period, .. –– ––..
Interrogation, ––.. ––.
Quotation, Qn
Paragraph, –– –– –– ––
Exclamation, –– –– ––
Parenthesis, Pn
Brackets, Bn
Dollar mark, Sx
Dash, Dx
Hyphen, Hx
Underline, Ux