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QSH was only discussed on the internet on the announcement posts themselves, and overviews of Q-Codes, which appear to come directly from this article's text. Not verifiable. |
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[[file:l-Telegraph1.png|thumb|right|200px|This is one of a set of articles on telegraphy.]]
The '''Q-code''' is a standardised collection of three-letter codes that each start with the letter "Q". It is an [[Operating signals|operating signal]] initially developed for commercial [[radiotelegraphy|radiotelegraph]] communication and later adopted by other radio services, especially [[amateur radio]]. To distinguish the use of a Q-code transmitted as a question from the same Q-code transmitted as a statement, operators either prefixed it with the military network question marker "{{overline|INT}}" (
Although Q-codes were created when radio used [[Morse code]] exclusively, they continued to be employed after the introduction of voice transmissions. To avoid confusion, transmitter [[call sign]]s are restricted; no country is ever issued an [[ITU prefix]] starting with "Q".
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