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Morse code abbreviations are not the same as prosigns.Morse abbreviations are composed of (normal) textual alpha-numeric character symbols with normal Morse code inter-character spacing; the character symbols in abbreviations, unlike the delineated character groups representing Morse code prosigns, are not "run together" or concatenated in the way most prosigns are formed.
CQ call of German amateur radio station DG2RBH on the 80 m band ("Hello CQ from Delta Golf 2 Romeo Bravo Hotel") CQ is a station code used by wireless operators derived from long established telegraphic practice on undersea cables and landlines, particularly used by those communicating in Morse code, ( ), but also by voice operators, to make a general call (called a CQ call).
Landline and submarine telegraphers' telegraphs had adopted the convention of using the station code "CQ" to all stations along a telegraph line.As the first wireless operators were taken from the already trained landline telegraphers, the current practices carried forward and CQ had then been adopted in maritime radiotelegraphy as a "general call" to any ship or land station.
Home Quarters Warehouse (HQ) was an American chain of "big-box" home improvement stores, originally based in Virginia Beach, Virginia.In 1984, the chemical manufacturing company W.R. Grace & Co. announced its intentions to enter the home improvement retail business, hiring Bernard R. Kossar and Frank Doczi to head the new chain.
As an example, both unnormalised and normalised sinc functions above have of {0} because both attain their global maximum value of 1 at x = 0. The unnormalised sinc function (red) has arg min of {−4.49, 4.49}, approximately, because it has 2 global minimum values of approximately −0.217 at x = ±4.49.
CQ (call), in radio communications, a general call, to anyone who receives it; Norinco CQ, a variant of the AR-15 rifle; Cissus quadrangularis, medicinal plant from the grape family; Adobe Experience Manager, formerly CQ, a web content management system
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Hello World: A Life in Ham Radio. New York: Princeton Architectural Press. ISBN 1-56898-281-X. Kenyon, Ronald W. QSL: How I Traveled the World and Never Left Home. Kindle Direct Publishing (2020). ISBN 979-8-6862-1417-0. 163 pages. Color illustrations of 109 vintage QSL cards from 1956 to 1961 issued by 89 shortwave stations in 75 countries, 35 ...