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The S stands for "Strength". Strength is an assessment of how powerful the received signal is at the receiving location. Although an accurate signal strength meter can determine a quantitative value for signal strength, in practice this portion of the RST code is a qualitative assessment, often made based on the S meter of the radio receiver at the location of signal reception.
10-5 Relay. Relay (To) Relay 10-6 Busy. Busy, stand by Busy -Stand by unless urgent Busy Busy 10-7 Out of service. Out of service (Give location and/or telephone number) Out of Service Out at ... Out of Service 10-7 A — Not Available 10-7 B Off Radio 10-8 In service. In Service Clear In Service 10-9 Repeat, conditions bad. Repeat Say Again 10-10
The U.S. Navy used R and K signals starting in 1929. [citation needed] The QSK code was one of the twelve Q Codes listed in the 1912 International Radiotelegraph Convention Regulations, but may have been in use earlier. [citation needed] The QSA code was included in the Madrid Convention (Appendix 10, General Regulations) sometime prior to 1936.
The section sign (§) is a typographical character for referencing individually numbered sections of a document; it is frequently used when citing sections of a legal code. [1] It is also known as the section symbol, section mark, double-s, or silcrow. [2] [3] In other languages it may be called the "paragraph symbol" (for example, German ...
[5] IARU Region 1 Technical Recommendation R.1 defines S9 for the HF bands to be a receiver input power of -73 dBm. This is a level of 50 microvolts at the receiver's antenna input assuming the input impedance of the receiver is 50 ohms. For VHF bands the recommendation defines S9 to be a receiver input power of -93 dBm. This is the equivalent ...
S, or for lowercase, s, is the nineteenth letter of the Latin alphabet, used in the English alphabet, the alphabets of other western European languages and other latin alphabets worldwide. Its name in English is ess [a] (pronounced / ˈ ɛ s /), plural esses. [1]
4. Mean value: If x is a variable that takes its values in some sequence of numbers S, then ¯ may denote the mean of the elements of S. 5. Negation: Sometimes used to denote negation of the entire expression under the bar, particularly when dealing with Boolean algebra.
The second of two vowels in a hiatus can be marked with a diaeresis (or "tréma") – as in words such as coöperative, daïs and reëlect – but its use has become less common, sometimes being replaced by the use of a hyphen. [9] The New Yorker [9] [10] [11] and MIT Technology Review under Jason Pontin have maintained such usage as house styles.