khz wikipedia - EAS

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  1. Hertz are commonly expressed in multiples: kilohertz (103 Hz, kHz), megahertz (106 Hz, MHz), gigahertz (109 Hz, GHz), terahertz (1012 Hz, THz). Some of the unit's most common uses are in the description of sine waves and musical tones, particularly those used in radio - and audio-related applications.
    In SI base units: s−1
    Symbol: Hz
    Unit of: frequency
    Unit system: SI
    en.wikipedia.org/wiki/Hertz
    en.wikipedia.org/wiki/Hertz
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    What is hertz (Hz)?
    (Image edited and adjusted to symmetric timing pulse with Gimp) The hertz (symbol: Hz) is the derived unit of frequency in the International System of Units (SI) and is defined as one cycle per second. It is named after Heinrich Rudolf Hertz (1857-1894), the first person to provide conclusive proof of the existence of electromagnetic waves.
    en.wikipedia.org/wiki/Hertz
    What is the unit of Hz?
    As an SI unit, Hz can be prefixed; commonly used multiples are kHz (kilohertz, 103 Hz ), MHz (megahertz, 106 Hz ), GHz (gigahertz, 109 Hz) and THz (terahertz, 1012 Hz ). One hertz simply means "one cycle per second" (typically that which is being counted is a complete cycle); 100 Hz means "one hundred cycles per second", and so on.
    en.wikipedia.org/wiki/Hertz
    What does 680 kHz mean on a radio?
    If your favorite AM radio station has a frequency of 680 kilohertz (kHz), that means the station's transmitter is oscillating (vibrating) at a rate of 680,000 cycles per second (i.e., 680,000 times a second). A related term is megahertz (MHz), meaning "millions of cycles per second".
    www.merriam-webster.com/dictionary/kilohertz
    What is 500 kilohertz (500 kHz)?
    The radio frequency of 500 kilohertz (500 kHz) had been an international calling and distress frequency for Morse code maritime communication since early in the 20th century.
    en.wikipedia.org/wiki/500_khz
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    https://en.wikipedia.org/wiki/500_kHz

    The radio frequency of 500 kilohertz (500 kHz) had been an international calling and distress frequency for Morse code maritime communication since early in the 20th century. For most of its history, this international distress frequency was referred to by its equivalent wavelength, 600 meters, or, using the earlier … See more

    International standards for the use of 500 kHz first appeared in the first International Radiotelegraph Convention in Berlin, which was signed November 3, 1906, and became effective July 1, 1908. The second Service Regulation … See more

    The silent and monitoring periods were soon expanded and standardized. For example, Regulation 44, from the July 27, 1914, edition of … See more

    With much maritime traffic currently displaced from the 500 kHz band, some countries have taken steps to allocate frequencies near 500 kHz to amateur radio use on a secondary … See more

    Expanded policies image
    Later policies image

    International standards for the use of 500 kHz were expanded by the second International Radiotelegraph Convention, which was held … See more

    Following the adoption of GMDSS in 1999 and the subsequent obsolescence of 500 kHz as a Morse distress frequency, the 2019 World Radiocommunication Conference (WRC … See more

    2182 kHz – the international distress frequency for voice maritime communication
    630-meter band
    Navtex – a maritime weather and safety text broadcast on 518 … See more

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  4. https://en.wikipedia.org/wiki/Hertz

    The hertz (symbol: Hz) is the unit of frequency in the International System of Units (SI), equivalent to one event (or cycle) per second. The hertz is an SI derived unit whose expression in terms of SI base units is s , meaning that one hertz is the reciprocal of one second. It is named after Heinrich Rudolf Hertz (1857–1894), the first person to provide conclusive proof of the existence of electromagnetic waves. Hertz are commonly expressed in multiples: kilohertz (10 Hz, kHz), meg…

    • In SI base units: s−1
    • Unit system: SI
  5. https://www.wikipedia.org/wiki/KHz

    WebMoved Permanently. The document has moved here.

  6. https://www.merriam-webster.com/dictionary/kilohertz

    WebIf your favorite AM radio station has a frequency of 680 kilohertz (kHz), that means the station's transmitter is oscillating (vibrating) at a rate of 680,000 cycles per second (i.e., …

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  7. https://ja.wikipedia.org/wiki/キロヘルツ

    Webキロヘルツ (kilohertz、記号: kHz )は、 国際単位系 における 周波数 の 単位 で、10 3 ヘルツ (Hz)(=1,000Hz)、0.001 メガヘルツ (MHz)に相当する。. 日本 では …

  8. https://zh.wikipedia.org/wiki/赫兹

    Web1Hz = 1/ s. 由上至下闪烁频率分别为0.5Hz、1Hz和2Hz,对应的闪烁间隔为2s、1s和0.5s. 赫兹 (符号: Hz )是 频率 的 国际单位制单位 ,表示每一 秒 周期性事件发生的次数 [1] [2] 。. 赫兹是以首个用实验验证 电磁波 存 …

  9. https://simple.wikipedia.org/wiki/Hertz

    Web1000 ZHz. The frequency of the Earth's spinning (once per ~24 hours) is about 12 microhertz (much smaller than 1 Hz). The hertz is sometimes used to measure the power of a processor in computing and electronics.

  10. https://el.wikipedia.org/wiki/Χερτζ

    WebΜε το όνομα Χερτζ, ή Χερτς, ονομάζεται στη Φυσική, η μονάδα μέτρησης συχνότητας οποιουδήποτε σύντομου περιοδικού φαινομένου. Η μονάδα, που συμβολίζεται διεθνώς …

  11. https://ja.wikipedia.org/wiki/ヘルツ

    Web1ヘルツは、「1 秒 間に1回の周波数」と定義される [8] 。. ヘルツとその記号 Hz は SI組立単位 である s −1 に与えられた固有の名称と記号であるが、一定周期で発生する現象に …

  12. https://ko.wikipedia.org/wiki/헤르츠

    Web하인리히 헤르츠. 헤르츠 (Hertz, 기호: Hz, 문화어: 헤르쯔)는 SI 단위계 의 주파수 단위이다. 이 이름은 전자기학 분야에서 큰 업적을 남긴 독일 물리학자 하인리히 루돌프 헤르츠 (Heinrich …

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