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These arrangements meant the message could be sent more quickly and it would take longer for the operator to become fatigued. Telegraphs were always operated by humans until late in the 19th century. When automated telegraph messages came in, codes with variable-length code points were inconvenient for machine design of the period. Instead ...
The telegraph companies charged for their service by the number of words in a message, with a maximum of 15 characters per word for a plain-language telegram, and 10 per word for one written in code. The style developed to minimize costs but still convey the message clearly and unambiguously.
A telegraph message sent by an electrical telegraph operator or telegrapher using Morse code (or a printing telegraph operator using plain text) was known as a telegram. A cablegram was a message sent by a submarine telegraph cable, [4] often shortened to "cable" or "wire".
Cable tolls were charged by the word, and telegraph companies counted codewords like any other words, so a carefully constructed code could reduce message lengths enormously. Early codes were typically compilations of phrases and corresponding codewords numbering in the tens of thousands.
Although a few abbreviations (such as SX for "dollar") are carried over from former commercial telegraph codes, almost all Morse abbreviations are not commercial codes. From 1845 until well into the second half of the 20th century, commercial telegraphic code books were used to shorten telegrams, e.g. PASCOELA = "Locals have plundered everything from the wreck."
Example of transatlantic radiotelegraph message recorded on paper tape at RCA's New York receiving center in 1920. The translation of the Morse code is given below the tape. Efforts to find a way to transmit telegraph signals without wires grew out of the success of electric telegraph networks, the first instant telecommunication systems. [23]
In 2018, Telegram sent a message to all Iranian users stating that the Telegram Talai and Hotgram unofficial clients are not secure. [343] In March 2014, Telegram promised that "all code will be released eventually", including all the various client applications (Android, iOS, desktop, etc.) and the server-side code. [344]
The Q-code is a standardised collection of three-letter codes that each start with the letter "Q". ... Cancel telegram (message) number ____ as if it had not been ...