(The only possible response is "yes" otherwise, there is just dead air.) This sudden signal drop was also one of the primary arguments of analog proponents against moving to digital systems. This difference in reception reduces attempts to ascertain subjective signal quality to simply asking, "Can you hear me now?" or similar.
At this threshold point, sometimes called the " digital cliff," the signal quality takes a severe drop and is lost. This is because digital signals have fairly consistent quality as the receiver moves away from the transmitter until reaching a threshold distance. This reporting system is not appropriate for rating digital signal quality. Given that this slang spans not only generations but also a spectrum of communications technologies (spark-gap transmitters, shortwave, radio telephone, citizen's band (CB) radio, cellular among others) and organizations (hobbyist, commercial, military), there are many interpretations in popular misuse.
5BY5 RADIO APP CODE
The term is arguably derived from the signal quality rating systems such as shortwave's SINPO code or amateur radio's RST code. Post- World War II, the phrase "loud and clear" entered common usage with a similar meaning.
Further shortened forms are "five by", "fivers" and "fifers". "Five by five" (occasionally written "'5 by 5", "five-by-five", "5 × 5", "5-by-5" or even just "Fives"), by extension, has come to mean "I understand you perfectly" in situations other than radio communication. "Five by five" therefore means a signal that has excellent strength and perfect clarity - the most understandable signal possible. The listening station reports these numbers separated with the word "by". In the military of the North Atlantic Treaty Organization ( NATO) countries, and other organizations, the signal quality is reported on two scales: the first is for signal strength, and the second for signal clarity or "readability." Both these scales range from one to five, where one is the worst and five is the best. In voice procedure (the techniques used to facilitate spoken communication over two-way radios) a transmitting station may request a report on the subjective quality of signal they are broadcasting.
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