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The Q-code is a standardised collection of three-letter codes that each start with the letter "Q". It is an operating signal initially developed for commercial 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 ...
The QSA code and QRK code are interrelated and complementary signal reporting codes for use in wireless telegraphy . They replaced the earlier QSJ code. They replaced the earlier QSJ code. Currently, the QSA and QRK codes are officially defined in the ITU Radio Regulations 1990, Appendix 13: Miscellaneous Abbreviations and Signals to Be Used in ...
R-S-T system. S-Meter (ICOM IC-732 HF Transceiver) The R-S-T system is used by amateur radio operators, shortwave listeners, and other radio hobbyists to exchange information about the quality of a radio signal being received. The code is a three digit number, with one digit each for conveying an assessment of the signal's readability, strength ...
QN Signals. The QN Signals are Morse code operating signals that were introduced for Amateur radio net operation in 1939 on the Michigan QMN Net to lighten the burdens of net control operators. Originally created by a committee of the Detroit Amateur Radio Association led by Ralph Thetreat, W8FX. [ 1] Ev Battey W1UE (W4IA-SK), then ARRL ...
The Maidenhead Locator System (a.k.a. QTH Locator and IARU Locator) is a geocode system used by amateur radio operators to succinctly describe their geographic coordinates, which replaced the deprecated QRA locator, which was limited to European contacts. [ 1] Its purpose is to be concise, accurate, and robust in the face of interference and ...
ACP 131. ACP-131[ 1] is the controlling publication for the listing of Q codes and Z codes. It is published and revised from time to time by the Combined Communications Electronics Board (CCEB) countries: Australia, New Zealand, Canada, United Kingdom, and United States. When the meanings of the codes contained in ACP-131 are translated into ...
Amateur radio, also known as ham radio, is the use of the radio frequency spectrum for purposes of non-commercial exchange of messages, wireless experimentation, self-training, private recreation, radiosport, contesting, and emergency communications. [ 1] The term "amateur" is used to specify "a duly authorized person interested in ...
Amateur teleprinting over radio (AMTOR) D-STAR (Digital Data) a high speed (128 kbit/s), data-only mode. Hellschreiber, also referred to as either Feld-Hell, or Hell a facsimile-based teleprinter. Discrete multi-tone modulation modes such as Multi Tone 63 (MT63) Multiple frequency-shift keying (MFSK) modes such as. FSK441, JT6M, JT65, and FT8.
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