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La haute fréquence désigne un spectre de f … La haute fréquence désigne un spectre de fréquences d'ondes électromagnétiques modulées dont la nature diffère en fonction du domaine auquel il s'applique. Le présent article traite du domaine des « hautes fréquences » (high frequencies en anglais, abrégé en HF) en radiocommunication qui désigne les ondes radio dont la fréquence est comprise entre 3 MHz et 30 MHz. Elles sont également nommées « ondes décamétriques » ou « ondes courtes » , en fonction de leur longueur d'onde comprise entre 10 et 100 mètres. Le terme « ondes courtes » (OC) est aussi utilisé notamment pour la radiodiffusion mondiale mais ses limites sont moins précises. La portée étant de plusieurs milliers de kilomètres, les communications captées sont très nombreuses. En électronique, les signaux de haute fréquence dits « HF » ou « radiofréquence » exploitent une fréquence supérieure à l'audiofréquence ou « basse fréquence » dite « BF ». En acoustique, le terme haute fréquence désigne les sons de 4 kHz à 20 kHz.quence désigne les sons de 4 kHz à 20 kHz.
, Frekuensi tinggi dari frekuensi radio adal … Frekuensi tinggi dari frekuensi radio adalah frekuensi antara 3 dan 30 . Frekuensi tinggi juga disebut sebagai pita dekameter atau gelombang dekameter karena panjang gelombangnya berkisar dari satu sampai sepuluh dekameter (sepuluh sampai seratus meter). Frekuensi tinggi digunakan oleh stasiun penyiaran gelombang pendek (2,310 - 25,820 MHz), komunikasi penerbangan, waktu pemerintahan, cuaca, dan radio amatir.ktu pemerintahan, cuaca, dan radio amatir.
, 高頻（英語：High frequency）是指頻帶由3MHz到30MHz的無線電波。比HF頻率略低的是中頻（MF），比HF頻率略高的是甚高頻（VHF）。 HF多數是用作民用電台廣播及短波廣播。其對於電子儀器所發出的電波抵抗力較弱，因此經常受到干擾。
, La frecuencia alta u onda corta (en inglés … La frecuencia alta u onda corta (en inglés: High Frequency [HF] o shortwave [SW]) se refiere a la banda del espectro electromagnético englobada entre los 3 y los 30 megahercios. La onda corta es una banda de radiofrecuencias en la que transmiten (entre otras) las emisoras de radio internacionales para transmitir su programación a todo el mundo y las estaciones de radioaficionados.undo y las estaciones de radioaficionados.
, High frequency (HF) is the ITU designation … High frequency (HF) is the ITU designation for the range of radio frequency electromagnetic waves (radio waves) between 3 and 30 megahertz (MHz). It is also known as the decameter band or decameter wave as its wavelengths range from one to ten decameters (ten to one hundred meters). Frequencies immediately below HF are denoted medium frequency (MF), while the next band of higher frequencies is known as the very high frequency (VHF) band. The HF band is a major part of the shortwave band of frequencies, so communication at these frequencies is often called shortwave radio. Because radio waves in this band can be reflected back to Earth by the ionosphere layer in the atmosphere – a method known as "skip" or "skywave" propagation – these frequencies are suitable for long-distance communication across intercontinental distances and for mountainous terrains which prevent line-of-sight communications. The band is used by international shortwave broadcasting stations (3.95–25.82 MHz), aviation communication, government time stations, weather stations, amateur radio and citizens band services, among other uses. citizens band services, among other uses.
, Als Kurzwellen (Abk. KW, engl. SW für shor … Als Kurzwellen (Abk. KW, engl. SW für short wave oder HF für high frequency), manchmal auch Dekameterwellen, bezeichnet man Radiowellen in einem höheren Frequenzbereich als die Lang- und Mittelwellen. Die Bezeichnungen Kurzwellen und Dekameterwellen beziehen sich auf die Wellenlänge im Bereich zwischen 10 m und 100 m, entsprechend einer Frequenz zwischen 3 und 30 MHz.hend einer Frequenz zwischen 3 und 30 MHz.
, 短波（たんぱ、HF（High Frequency）またはSW（Shortwave, Short Wave））とは、3 - 30MHzの周波数の電波をいう。波長は10 - 100m、デカメートル波とも呼ばれる。
, Hög frekvens (HF; engelska: High frequency … Hög frekvens (HF; engelska: High frequency) är ITU-beteckningen för radiofrekvenser (RF) i intervallet 3 till 30 MHz. En viktig del av detta band utgör kortvågsbandet (SW), så kommunikation vid dessa frekvenser kallas ofta för . HF-bandet är även känt som dekameterbandet eller dekametervågor, med våglängder i intervallet tio till en (100 till 10 m).i intervallet tio till en (100 till 10 m).
, Met high frequency of HF worden frequentie … Met high frequency of HF worden frequenties in het radiospectrum aangeduid tussen 3 en 30 MHz. De radiogolven hebben een golflengte van 10 tot 100 meter en worden daarom ook wel decametergolf genoemd. Het HF-spectrum is vanwege zijn propagatieeigenschappen zeer geschikt voor uitzendingen op grote afstand. Vanwege deze eigenschappen is HF bij veel gebruikers populair, zowel militair als civiel, variërend van omroepzenders tot lange-afstandscommunicatie. Het is daarom altijd een druk bezet frequentiegebied geweest dat bij elke nieuwe vergadering van de WARC (instantie die radiofrequenties verdeelt) een groot gevecht tussen de belangengroepen opleverde. Tot de opkomst van het internet was een HF-verbinding een van weinige betaalbare mogelijkheden voor bedrijven om continu informatie uit te wisselen tussen de verschillende landen. Vrijwel tot het einde van de 20e eeuw bleven internationale telefoontarieven hoog en was een continuverbinding tussen twee landen vrijwel onbetaalbaar. Door de opkomst van communicatie-satellieten in de jaren '60 en het beschikbaar komen van goedkope apparatuur voor hogere frequenties was er steeds minder behoefte in de civiele wereld. In de militaire wereld bleef de band populair vanwege de vermeende kwetsbaarheid van satellieten.e vermeende kwetsbaarheid van satellieten.
, التردد المرتفع (بالإنجليزية: high frequenc … التردد المرتفع (بالإنجليزية: high frequency) اختصاراً HF، هو تسمية الاتحاد الدولي للاتصالات لنطاق الموجات الكهرومغناطيسية للترددات الراديوية (الموجات الراديوية) بين 3 و30 ميغا هرتز (MHz). يُعرف أيضًا باسم النطاق العشري أو الموجة العشرية إذ تتراوح الأطوال الموجية للنطاق من 1 إلى 10 ديكامتر (من عشرة إلى مئة متر). يُشار إلى الترددات الأقل مباشرة من التردد العالي بالترددات المتوسطة إم إف (MF)، بينما يُعرف النطاق التالي للترددات العالية باسم النطاق عالي التردد جدًا في إيتش إف (VHF). يعد النطاق عالي التردد جزءًا رئيسيًا من نطاق الموجات القصيرة للترددات، لذا يُطلق على الاتصال عند هذه الترددات اسم راديو الموجة القصيرة. لأن الموجات الراديوية في هذا النطاق يمكن أن تنعكس عن الغلاف المتأين في الغلاف الجوي إلى الأرض، وهي طريقة تعرف بانتشار «القفزة» أو «الموجة السماوية»، هذه الترددات مناسبة للاتصال لمسافات طويلة عبر مسافات عابرة للقارات وللتضاريس الجبلية التي تمنع الاتصال عن طريق انتشار خط البصر. تستخدم المحطات الإذاعية الدولية بالموجات القصيرة هذا النطاق (2.31-25.82 ميجاهرتز)، ويُستخدم أيضًا في الاتصالات الجوية وفي محطات التوقيت الحكومية ومحطات الطقس وراديو الهواة وخدمات نطاق المواطنين بالإضافة إلى استخدامات أخرى.طاق المواطنين بالإضافة إلى استخدامات أخرى.
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La haute fréquence désigne un spectre de f … La haute fréquence désigne un spectre de fréquences d'ondes électromagnétiques modulées dont la nature diffère en fonction du domaine auquel il s'applique. Le présent article traite du domaine des « hautes fréquences » (high frequencies en anglais, abrégé en HF) en radiocommunication qui désigne les ondes radio dont la fréquence est comprise entre 3 MHz et 30 MHz. Elles sont également nommées « ondes décamétriques » ou « ondes courtes » , en fonction de leur longueur d'onde comprise entre 10 et 100 mètres. Le terme « ondes courtes » (OC) est aussi utilisé notamment pour la radiodiffusion mondiale mais ses limites sont moins précises. La portée étant de plusieurs milliers de kilomètres, les communications captées sont très nombreuses.mmunications captées sont très nombreuses.
, 短波（たんぱ、HF（High Frequency）またはSW（Shortwave, Short Wave））とは、3 - 30MHzの周波数の電波をいう。波長は10 - 100m、デカメートル波とも呼ばれる。
, Hög frekvens (HF; engelska: High frequency … Hög frekvens (HF; engelska: High frequency) är ITU-beteckningen för radiofrekvenser (RF) i intervallet 3 till 30 MHz. En viktig del av detta band utgör kortvågsbandet (SW), så kommunikation vid dessa frekvenser kallas ofta för . HF-bandet är även känt som dekameterbandet eller dekametervågor, med våglängder i intervallet tio till en (100 till 10 m).i intervallet tio till en (100 till 10 m).
, Als Kurzwellen (Abk. KW, engl. SW für shor … Als Kurzwellen (Abk. KW, engl. SW für short wave oder HF für high frequency), manchmal auch Dekameterwellen, bezeichnet man Radiowellen in einem höheren Frequenzbereich als die Lang- und Mittelwellen. Die Bezeichnungen Kurzwellen und Dekameterwellen beziehen sich auf die Wellenlänge im Bereich zwischen 10 m und 100 m, entsprechend einer Frequenz zwischen 3 und 30 MHz.hend einer Frequenz zwischen 3 und 30 MHz.
, Met high frequency of HF worden frequentie … Met high frequency of HF worden frequenties in het radiospectrum aangeduid tussen 3 en 30 MHz. De radiogolven hebben een golflengte van 10 tot 100 meter en worden daarom ook wel decametergolf genoemd. Het HF-spectrum is vanwege zijn propagatieeigenschappen zeer geschikt voor uitzendingen op grote afstand. Door de opkomst van communicatie-satellieten in de jaren '60 en het beschikbaar komen van goedkope apparatuur voor hogere frequenties was er steeds minder behoefte in de civiele wereld. In de militaire wereld bleef de band populair vanwege de vermeende kwetsbaarheid van satellieten.e vermeende kwetsbaarheid van satellieten.
, Frekuensi tinggi dari frekuensi radio adal … Frekuensi tinggi dari frekuensi radio adalah frekuensi antara 3 dan 30 . Frekuensi tinggi juga disebut sebagai pita dekameter atau gelombang dekameter karena panjang gelombangnya berkisar dari satu sampai sepuluh dekameter (sepuluh sampai seratus meter). Frekuensi tinggi digunakan oleh stasiun penyiaran gelombang pendek (2,310 - 25,820 MHz), komunikasi penerbangan, waktu pemerintahan, cuaca, dan radio amatir.ktu pemerintahan, cuaca, dan radio amatir.
, La frecuencia alta u onda corta (en inglés … La frecuencia alta u onda corta (en inglés: High Frequency [HF] o shortwave [SW]) se refiere a la banda del espectro electromagnético englobada entre los 3 y los 30 megahercios. La onda corta es una banda de radiofrecuencias en la que transmiten (entre otras) las emisoras de radio internacionales para transmitir su programación a todo el mundo y las estaciones de radioaficionados.undo y las estaciones de radioaficionados.
, 高頻（英語：High frequency）是指頻帶由3MHz到30MHz的無線電波。比HF頻率略低的是中頻（MF），比HF頻率略高的是甚高頻（VHF）。 HF多數是用作民用電台廣播及短波廣播。其對於電子儀器所發出的電波抵抗力較弱，因此經常受到干擾。
, التردد المرتفع (بالإنجليزية: high frequenc … التردد المرتفع (بالإنجليزية: high frequency) اختصاراً HF، هو تسمية الاتحاد الدولي للاتصالات لنطاق الموجات الكهرومغناطيسية للترددات الراديوية (الموجات الراديوية) بين 3 و30 ميغا هرتز (MHz). يُعرف أيضًا باسم النطاق العشري أو الموجة العشرية إذ تتراوح الأطوال الموجية للنطاق من 1 إلى 10 ديكامتر (من عشرة إلى مئة متر). يُشار إلى الترددات الأقل مباشرة من التردد العالي بالترددات المتوسطة إم إف (MF)، بينما يُعرف النطاق التالي للترددات العالية باسم النطاق عالي التردد جدًا في إيتش إف (VHF). يعد النطاق عالي التردد جزءًا رئيسيًا من نطاق الموجات القصيرة للترددات، لذا يُطلق على الاتصال عند هذه الترددات اسم راديو الموجة القصيرة. لأن الموجات الراديوية في هذا النطاق يمكن أن تنعكس عن الغلاف المتأين في الغلاف الجوي إلى الأرض، وهي طريقة تعرف بانتشار «القفزة» أو «الموجة السماوية»، هذه الترددات مناسبة للاتصال لمسالسماوية»، هذه الترددات مناسبة للاتصال لمس
, High frequency (HF) is the ITU designation … High frequency (HF) is the ITU designation for the range of radio frequency electromagnetic waves (radio waves) between 3 and 30 megahertz (MHz). It is also known as the decameter band or decameter wave as its wavelengths range from one to ten decameters (ten to one hundred meters). Frequencies immediately below HF are denoted medium frequency (MF), while the next band of higher frequencies is known as the very high frequency (VHF) band. The HF band is a major part of the shortwave band of frequencies, so communication at these frequencies is often called shortwave radio. Because radio waves in this band can be reflected back to Earth by the ionosphere layer in the atmosphere – a method known as "skip" or "skywave" propagation – these frequencies are suitable for long-distance communicatiore suitable for long-distance communicatio
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