khz wikipedia - EAS
- 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.en.wikipedia.org/wiki/Hertz
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- See moreSee all on Wikipediahttps://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
• Berlin International Radiotelegraphic Convention of 1906
• Radio Laws and Regulations of the United States: Edition July 27, 1914. (Includes the 1912 London Radiotelegraphic Convention)
• Excellent first hand account of distress frequency communications See moreInternational 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 moreWikipedia text under CC-BY-SA license - 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…
Wikipedia · Text under CC-BY-SA license - https://www.wikipedia.org/wiki/KHz
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- 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., …
- 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 …
- 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 …
- 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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