500 khz wikipedia - EAS
- The Service Regulations, affixed to the 1912 Convention, established 500 kHz as the primary frequency for seagoing communication, and the standard ship frequency was changed from 1,000 kHz to 500 kHz, to match the coastal station standard. Communication was generally conducted in Morse code, initially using spark-gap transmitters.
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See all on Wikipediahttps://en.wikipedia.org/wiki/500_kHzThe 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 Radio Communication Laws of the United States, stated: "The international standard wave length is 600 meters, and the … 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 … See moreInternational standards for the use of 500 kHz were expanded by the second International Radiotelegraph Convention, which was held after the sinking of the RMS Titanic. … 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://de.wikipedia.org/wiki/500_kHz
Die Frequenz 500 kHz bzw. Wellenlänge 600 m ist seit der Einführung des Seefunkdienstes internationale Seenotfrequenz. Die besondere Wahl der Frequenz 500 kHz bzw. 600 m Wellenlänge aus dem Frequenzspektrum gründet sich auf die außerordentlich lange, ausschließliche und besonders geschützte Nutzung im Seefunkdienst. Die Frequenz war fast 80 Jahre lang die Internationale Anruf- und Seenotfrequenz im maritimen Funkdienst.
Wikipedia · Text under CC-BY-SA license- Estimated Reading Time: 8 mins
- https://it.wikipedia.org/wiki/500_kHzSee more on it.wikipedia.orgNessuna frequenza poteva vantare un ascolto tanto meticoloso e costante come quello sulla 500 kHz. Gli operatori radio del Servizio Mobile Marittimo abbracciavano di fatto tutto il globo sia con quelli in navigazione, sia con quelli che, nelle loro stazioni costiere, mantenevano un ascolto continuo nell'area di lor…
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- https://en.wikipedia.org/wiki/Talk:500_kHz
- I propose severely curtailing the section on Amateur radio, instead linking to the 630-meter band article. This will avoid duplication of data, noting that the section on countries Amateur radio allocations in this article contains obsolete information and is not being kept in sync with the 630-meter band article. I'd also argue that information on...
- (Rated Start-class, Mid-importance): WikiProject Radio
- https://en.wikipedia.org/wiki/International_distress_frequency
History [ edit] For much of the 20th century, 500 kHz was the primary international distress frequency. Its use has been phased out in favor of the Global Maritime Distress Safety System …
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- https://en.wikipedia.org/wiki/Radio_frequency
Radio frequency is the oscillation rate of an alternating electric current or voltage or of a magnetic, electric or electromagnetic field or mechanical system in the frequency range from …
- https://en.wikipedia.org/wiki/Radio_spectrum
The radio spectrum is the part of the electromagnetic spectrum with frequencies from 0 Hz to 3,000 GHz. Electromagnetic waves in this frequency range, called radio waves, are widely used …
500 kHz - Wikipedia @ WordDisk
https://worddisk.com/wiki/500_kHzThe 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 …
- https://www.wikiwand.com/de/500_kHz
Die Frequenz 500 kHz bzw. Wellenlänge 600 m ist seit der Einführung des Seefunkdienstes internationale Seenotfrequenz. Die besondere Wahl der Frequenz 500 kHz bzw. 600 m …
- https://en.wikipedia.org/wiki/1500_AM
32 rows · The following radio stations broadcast on AM frequency 1500 kHz: [1] The Federal Communications Commission categorizes 1500 AM as a U.S. clear-channel frequency. [2] …
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