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Morse Code
What is it?
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Morse code is a method of transmitting text information as a series of on-off tones, lights, or clicks that can be directly understood by a skilled listener or observer without special equipment.
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It is named for Samuel F. B. Morse, an inventor of the telegraph.
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The code assigned letters in the alphabet and numbers a set of dots (short marks) and dashes (long marks) based on the frequency of use.
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Morse code sequence may be made from a combination of the following five-bit strings:
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short mark, dot or "dit" ( . ): 1
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longer mark, dash or "dah" ( ): 111
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intra-character gap (between the dots and dashes within a character): 0
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short gap (between letters): 000
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medium gap (between words): 0000000
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Chart of the Morse code letters and numerals.
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Each Morse code symbol represents either a text character.
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The letters of a word are separated by a space equal to three dots, and the words are separated by a space equal to seven dots.
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The length of a dot is one unit.
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A dash is three units.
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The space between parts of the same letter is one unit.
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The space between letters is three units.
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The space between words is seven units.
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Printed morse code:
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Morse code in the electrical signal:
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Morse code generating instrument with beep:
How does it work?
If the time of contact of T is more, it is called a DASH ( __ ).
If it is very short, it is called DOT ( . )
K
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When the Morse Key K is pressed, the circuit is completed through the ground which is a conductor.
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The electromagnet attracts the armature A and it produces a sound 'click' on striking the rod K2.
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On releasing the Morse key K, the circuit breaks and the armature goes to its original position touching the rod Kl.
Telegraph & Morse Code
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The Telegraph is the first long-distance communication.
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To transmit messages across telegraph wires, in the 1830s Morse and Vail created what came to be known as Morse code.
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Initially, the code, when transmitted over the telegraph system, was rendered as marks on a piece of paper that the telegraph operator would then translate back into English.
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the paper was replaced by a receiver that created more pronounced beeping sounds.
Telegraph is the first modern instrument used in sending messages to a distant place in a very short time.
Receiver (B)
Transmitter(A)
With the help of the message is transmitted at A and decoded at the station B to receive the message.
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In 1844, Morse sent Vail the first ever telegraph message.
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In 1874, Thomas Alva Edison developed which allowed for four messages to be transmitted simultaneously using the same wire.
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Use of the telegraph was quickly accepted by people eager for a faster and easier way of sending and receiving information.
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40 such telegraph lines across the Atlantic by 1940.
Lighthouse & Morse Code
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Morse code can be transmitted in a number of ways:
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electrical pulses along a telegraph wire
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audio tone
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radio signal with short and long tones
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mechanical or visual signal (e.g. a flashing light)
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But for you, we shall Decode and Read.
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We can communicate to the lighthouse, ship with this technique.
Morse code through flashing light.
Aldis lamp
Heliograph
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Each time light flashes means DOT (.).
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Each time light long puls mean DASH(-).
Use
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Morse code is used by some amateur radio operator.
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Aviation: Pilots and air traffic controllers usually need only.
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