What does QRS mean in Amateur Radio?

This page is about the meanings of the acronym/abbreviation/shorthand QRS in the Academic & Science field in general and in the Amateur Radio terminology in particular.

Send More Slowly

Often heard on the Novice Bands as novitiates attempt to communicate via International Morse. International Morse is still very popular with Amateur Radio Operators whom are licensed by the FCC:

Academic & Science » Amateur Radio

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Submitted by acronimous on April 26, 2014

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Definition

What does QRS mean?

qrs
The QRS complex is the combination of three of the graphical deflections seen on a typical electrocardiogram (ECG or EKG). It is usually the central and most visually obvious part of the tracing. It corresponds to the depolarization of the right and left ventricles of the heart and contraction of the large ventricular muscles. In adults, the QRS complex normally lasts 80 to 100 ms; in children it may be shorter. The Q, R, and S waves occur in rapid succession, do not all appear in all leads, and reflect a single event and thus are usually considered together. A Q wave is any downward deflection immediately following the P wave. An R wave follows as an upward deflection, and the S wave is any downward deflection after the R wave. The T wave follows the S wave, and in some cases, an additional U wave follows the T wave. To measure the QRS interval start at the end of the PR interval (or beginning of the Q wave) to the end of the S wave. Normally this interval is 0.08 to 0.10 seconds. When the duration is longer it is considered a wide QRS complex.

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"QRS." Abbreviations.com. STANDS4 LLC, 2024. Web. 28 Mar. 2024. <https://www.abbreviations.com/term/1499182>.

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