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A signal strength and readability report is a standardized format for reporting the strength of the radio signal and the readability (quality) of the radiotelephone (voice) or radiotelegraph (Morse code) signal transmitted by another station as received at the reporting station's location and by their radio station equipment. These report ...
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.
The Circuit Merit system is a measurement process designed to assess the voice-to-noise ratio in wired and wireless telephone circuits, [1] especially the AMPS system, [2] and although its reporting scale is sometimes used as input for calculating mean opinion score, [3] the rating system is officially defined relative to given ranges of voice-to-noise ratios.
Low bit depth SDRs such as an 8-bit design can be somewhat accurate, but as they distinguish much coarser differences in input levels, precision at the low end of the S scale will suffer. Even with a high quality SDR, it is worth keeping in mind that the S meter is measuring the strength of the signal at the 50 ohm input of the receiver, not at ...
SINPO is the obvious origin of 5 by 5 as it referred to a rating of 5 in each of the five categories (see the Wiki article on SINPO) Radio amateurs later adopted the simpler RST system but in the RST (Readability, Strength, Tone) system only Readability is a 5 level scale, S and T are both 9 level scales, where a perfect report would be 599 ...
The chart was designed by Ian Bailey [5] and Jan E. Lovie-Kitchin at the National Vision Research Institute of Australia. [1] [3] They described their motivation for designing the LogMAR chart as follows: "We have designed a series of near vision charts in which the typeface, size progression, size range, number of words per row and spacings were chosen in an endeavour to achieve a ...
#12 Northern Iowa (23-10) 16-13 ATS 6-4 L10 6.4 3PT High Scorers: Koch 12.3, Ahelegbe 11.8, Eglseder 10.1 #4 Washington ★ (25-8) 18-11-1 ATS 8-2 L10 4.2 3PT
The Coleman–Liau index is a readability test designed by Meri Coleman and T. L. Liau to gauge the understandability of a text. Like the Flesch–Kincaid Grade Level, Gunning fog index, SMOG index, and Automated Readability Index, its output approximates the U.S. grade level thought necessary to comprehend the text.