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  2. Frequency modulation - Wikipedia

    en.wikipedia.org/wiki/Frequency_modulation

    For example, narrowband FM (NFM) is used for two-way radio systems such as Family Radio Service, in which the carrier is allowed to deviate only 2.5 kHz above and below the center frequency with speech signals of no more than 3.5 kHz bandwidth.

  3. Amateur radio operator - Wikipedia

    en.wikipedia.org/wiki/Amateur_radio_operator

    About three million amateur radio operators are currently active worldwide. [1] Amateur radio operators are also known as radio amateurs or hams. The term "ham" as a nickname for amateur radio operators originated in a pejorative usage (like "ham actor") by operators in commercial and professional radio communities, and dates to wired telegraphy.

  4. Minor allele frequency - Wikipedia

    en.wikipedia.org/wiki/Minor_allele_frequency

    2. Find MAF/MinorAlleleCount link. MAF/MinorAlleleCount: C=0.1506/754 (1000 Genomes, where number of genomes sampled = N = 2504); [ 4 ] where C is the minor allele for that particular locus ; 0.1506 is the frequency of the C allele (MAF), i.e. 15% within the 1000 Genomes database; and 754 is the number of times this SNP has been observed in the ...

  5. Metric prefix - Wikipedia

    en.wikipedia.org/wiki/Metric_prefix

    1 km 2 means one square kilometre, or the area of a square of 1000 m by 1000 m. In other words, an area of 1 000 000 square metres and not 1000 square metres. 2 Mm 3 means two cubic megametres, or the volume of two cubes of 1 000 000 m by 1 000 000 m by 1 000 000 m, i.e. 2 × 10 18 m 3, and not 2 000 000 cubic metres (2 × 10 6 m 3).

  6. List of European medium wave transmitters - Wikipedia

    en.wikipedia.org/wiki/List_of_European_medium...

    10 Radio Renaiscenca Haslingden 0.2 Lyca Radio Greater Manchester: Lea Bridge Road 0.95 Sunrise Radio: 972 London 1 Sunrise Radio 981 Coimbra 10 Radio Sim Líbeznice: 10 Rádio Český Impuls 990 Archanda 25 SER Radio Bilbao Tywyn 0.4 BBC Radio 5 Live Milan: 0.1 Z-100 999 Majadahonda: 50 COPE Madrid Grigoriopol: 1000 Radio Rossii: Bizbizja 5

  7. Accuracy class - Wikipedia

    en.wikipedia.org/wiki/Accuracy_class

    Class 0.5 is an ANSI C12.20 accuracy class for electric meters with absolute accuracy better than ± 0.5% of the nominal full scale reading. [1] Typically, a class specifies accuracy at a number of points, with the absolute accuracy at lower values being better than the nominal "percentage of full scale" accuracy.

  8. Numerical digit - Wikipedia

    en.wikipedia.org/wiki/Numerical_digit

    Similarly, each successive place to the right of the separator has a place value equal to the place value of the previous digit divided by the base. For example, in the numeral 10.34 (written in base 10), the 0 is immediately to the left of the separator, so it is in the ones or units place, and is called the units digit or ones digit; [6] [7] [8]

  9. Odds ratio - Wikipedia

    en.wikipedia.org/wiki/Odds_ratio

    An odds ratio greater than 1 indicates that the condition or event is more likely to occur in the first group. And an odds ratio less than 1 indicates that the condition or event is less likely to occur in the first group. The odds ratio must be nonnegative if it is defined. It is undefined if p 2 q 1 equals zero, i.e., if p 2 equals zero or q ...