Hog-Morse was the tendency of inexperienced telegraph operators to make errors when sending or receiving in Morse code. It is so called after one example, "home" (▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄) becoming "hog" (▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄), which is just a subtle error in timing. The term was current in the United States in the period when American Morse code was in use.
The American code was a little different to the International Morse Code currently in use. With the American code it is easier to make timing errors of this sort because there were several more symbol timings than there are in the international code. For instance, the international code has only two symbols, dots and dashes, but the American code has several lengths of dash. There is a distinction between "L" (▄▄▄▄▄▄▄) and "T" (▄▄▄▄▄). Also, in the international code the space between symbols within a character is always the same, but American Morse has two different spaces. The letters "S" (▄▄▄▄▄▄▄▄), "C" (▄▄▄▄▄▄▄▄▄), and "R" (▄▄▄▄▄▄▄▄▄) all consist of three dots, but the timing is different in each case.
A frequently quoted, but possibly apocryphal, story from the historical period concerns the similarity of "L" and "T" in the American code. A company in Richmond, Virginia received a request for quotation for a load of "undressed staves" (rough sawn wood intended for the manufacture of barrels), but the telegraph operator had sent ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄ (SLAVES) instead of ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄ (STAVES) thus attempting to order "undressed slaves". The company replied reminding the customer that slavery had been abolished.
- Anton A. Huurdeman, The Worldwide History of Telecommunications, p.144, Wiley-IEEE, 2003 ISBN 0471205052.
- Walter Polk Phillips, Sketches Old and New, pp. 222-223, J. H. Bunnell, 1897 OCLC 428925.
- "Tales of the Telegraph". Retrieved May 23, 2012.
- Yezpitelok, Maxwell; Cantrell, M. Asher (May 23, 2012). "5 Internet Annoyances that are way older than the internet". Cracked.com.
- Neal McEwan, The Telegraph Office, "Telegraph talk and talkers", a fuller copy of the McClure's Magazine article, L. C. Hall, "Human character and emotions: an old telegrapher reads on the wire", McClure's Magazine, pp. 227–231, January 1902.
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