With Morse Code, each letter of the alphabet was translated into short and long signals (also known as dots and dashes). The pulse length of a dash is equal to the pulse length of three dots. Eventually, when Morse Code was adapted to radio, the dots and dashes began being referred to as "dits" and "dahs" based on the sound of the radio pulses.
The most commonly used signal for distress is SOS in Morse Code. It is represented as
. . . - - - . . .
(Three dots, followed by three dashes, followed by another three dots)
Polyester
5053397 00203 9
£ 12.99
9
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