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In telecommunications, Continuous Tone-Coded Squelch System or CTCSS is one type of in-band signaling that is used to reduce the annoyance of listening to other users on a shared two-way radio communication channel. (See squelch.) It is sometimes referred to as tone squelch. It does this by adding a low frequency audio tone to the voice. Where more than one group of users is on the same radio frequency (called co-channel users), CTCSS circuitry mutes those users who are using a different CTCSS tone or no CTCSS. It is sometimes referred to as a sub-channel, but this is a misnomer because no additional channels are created. All users with different CTCSS tones on the same channel are still transmitting on the identical radio frequency, and their transmissions interfere with each other; howev

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  • Die Funktion CTCSS (englisch Continuous Tone Coded Subaudio Squelch oder englisch Continuous Tone Coded Squelch System) (Subton-Squelch-Verfahren; Entstörungscode) erlaubt das gezielte Auswählen bestimmter Funkgeräte innerhalb eines ausgewählten Funkkanals. Beim Senden wird vom Anrufer bei analoger Audioübertragung ein Pilotton mitgesendet, auf den nur die Empfangsgeräte reagieren, die auf diesen Tonruf programmiert sind. Beim Ankommen des Erkennungstons werden sie dann den Empfang zum Mithören öffnen. CTCSS erlaubt es, dass sich verschiedene Benutzergruppen ein und dieselbe Sendefrequenz teilen, (z. B. denselben PMR-Funkkanal), ohne dass sie Gespräche der jeweils anderen Benutzergruppen mit anhören müssen. Eine idente Funktion, welche statt mit Pilottönen mit digitalen Codewörtern arbeitet, stellt das Verfahren Digital Coded Squelch (DCS) dar. (de)
  • In telecommunications, Continuous Tone-Coded Squelch System or CTCSS is one type of in-band signaling that is used to reduce the annoyance of listening to other users on a shared two-way radio communication channel. (See squelch.) It is sometimes referred to as tone squelch. It does this by adding a low frequency audio tone to the voice. Where more than one group of users is on the same radio frequency (called co-channel users), CTCSS circuitry mutes those users who are using a different CTCSS tone or no CTCSS. It is sometimes referred to as a sub-channel, but this is a misnomer because no additional channels are created. All users with different CTCSS tones on the same channel are still transmitting on the identical radio frequency, and their transmissions interfere with each other; however; the interference is masked under most conditions. The CTCSS feature also does not offer any security. A receiver with just a carrier or noise squelch does not suppress any sufficiently strong signal; in CTCSS mode it unmutes only when the signal also carries the correct sub-audible audio tone. The tones are not actually below the range of human hearing, but are poorly reproduced by most communications-grade speakers and in any event are usually filtered out before being sent to the speaker or headphone. (en)
  • En radiocommunication, le dispositif CTCSS, abréviation de Continuous Tone Code Squelch System (litt. système de filtrage par code de tonalité continu), est un système de réception sélective utilisé sur certains émetteurs-récepteurs pour réduire la gêne par d'autres utilisateurs partageant une même fréquence radio. Il ne doit pas être confondu avec les systèmes d'appel sélectif. (fr)
  • CTCSS, acronimo di Continuous Tone-Coded Squelch System, è un meccanismo di silenziamento utilizzato nelle radiocomunicazioni e in altri ambiti.In pratica, consente a due o più corrispondenti radio di comunicare tra loro escludendo automaticamente altri segnali radio esterni al loro gruppo. (it)
  • CTCSS (Continuous Tone-Coded Squelch System of Continuous Tone Coded Subaudio Squelch) is een systeem van bij radioverbindingen. Dit systeem maakt het mogelijk een radiokanaal met meerdere gebruikers te delen, en minimale storing van elkaar te ondervinden. CTCSS wordt vooral gebruikt bij VHF- en UHF-communicatie bij hulpdiensten en in militaire communicatie, maar ook bij zendamateurs en gebruikers van PMR446. (nl)
  • CTCSS (Continuous Tone-Coded Squelch System) – termin używany w radiokomunikacji oznaczający system wyłączania blokady szumów odbiornika ciągłym, niesłyszalnym tonem. Tony CTCSS są szeroko stosowane w dwukierunkowej łączności radiowej, np. w PMR 446. Służą do zredukowania wzajemnych zakłóceń w tym samym kanale łączności, gdy kanał jest używany przez różne grupy użytkowników. Radiotelefony nawiążą łączność tylko wtedy, gdy ustawienie tonów w obu jest takie samo. Umożliwia to (teoretycznie) wydzielenie kilkudziesięciu kanałów łączności w jednym fizycznym kanale radiowym. (pl)
  • Система CTCSS (Continuous Tone-Coded Squelch System или Continuous Tone-Controlled Selective Signaling) — тонально-кодовая система шумоподавления, применяемая в связных радиостанциях с аналоговой модуляцией. Имеет также русскоязычные разговорные названия - тональный шумоподавитель, «субтон», «пилот-тон». Некоторые производители аппаратуры связи используют свои названия CTCSS: PL - Private Line (Motorola), CG - Channel Guard (Ericsson), QT - Quiet Talk (Kenwood) и др. Принцип работы CTCSS основан на передаче в канале связи субтональных частот ниже 300 Гц, использующихся в качестве «маркера» сигнала, что предоставляет ряд дополнительных функциональных возможностей. CTCSS не является системой шифрования или маскирования речи и в радиостанциях работает поверх традиционного шумоподавителя. Благодаря своей простоте и доступности CTCSS широко распространена и применяется как в профессиональных, так и в недорогих безлицензионных радиостанциях низшей ценовой категории. (ru)
  • Em telecomunicações, CTCSS (Acrônimo para o inglês: Continuous Tone-Coded Squelch System)é um cicuito que é usado para reduzir a interferência para outros usuários em um canal compartilhado de rádio comunicação. Onde mais de um grupo de usuários está no mesmo canal (chamado co-usuários), o CTCSS filtra outros usuários, se eles estiverem usando um tom CTCSS diferente ou nenhum CTCSS. Ao invés de receber qualquer sinal de audio, o rádio receptor irá receber apenas quando houver a presença de um sinal E do tom CTCSS correto. Funciona como o uso de uma fechadura em uma porta. Um rádio sem CTCSS irá reproduzir qualquer sinal, enquanto um com CTCSS ignora qualquer sinal com exceção dos sinais codificados com o tom CTCSS correto. (pt)
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  • En radiocommunication, le dispositif CTCSS, abréviation de Continuous Tone Code Squelch System (litt. système de filtrage par code de tonalité continu), est un système de réception sélective utilisé sur certains émetteurs-récepteurs pour réduire la gêne par d'autres utilisateurs partageant une même fréquence radio. Il ne doit pas être confondu avec les systèmes d'appel sélectif. (fr)
  • CTCSS, acronimo di Continuous Tone-Coded Squelch System, è un meccanismo di silenziamento utilizzato nelle radiocomunicazioni e in altri ambiti.In pratica, consente a due o più corrispondenti radio di comunicare tra loro escludendo automaticamente altri segnali radio esterni al loro gruppo. (it)
  • CTCSS (Continuous Tone-Coded Squelch System of Continuous Tone Coded Subaudio Squelch) is een systeem van bij radioverbindingen. Dit systeem maakt het mogelijk een radiokanaal met meerdere gebruikers te delen, en minimale storing van elkaar te ondervinden. CTCSS wordt vooral gebruikt bij VHF- en UHF-communicatie bij hulpdiensten en in militaire communicatie, maar ook bij zendamateurs en gebruikers van PMR446. (nl)
  • CTCSS (Continuous Tone-Coded Squelch System) – termin używany w radiokomunikacji oznaczający system wyłączania blokady szumów odbiornika ciągłym, niesłyszalnym tonem. Tony CTCSS są szeroko stosowane w dwukierunkowej łączności radiowej, np. w PMR 446. Służą do zredukowania wzajemnych zakłóceń w tym samym kanale łączności, gdy kanał jest używany przez różne grupy użytkowników. Radiotelefony nawiążą łączność tylko wtedy, gdy ustawienie tonów w obu jest takie samo. Umożliwia to (teoretycznie) wydzielenie kilkudziesięciu kanałów łączności w jednym fizycznym kanale radiowym. (pl)
  • In telecommunications, Continuous Tone-Coded Squelch System or CTCSS is one type of in-band signaling that is used to reduce the annoyance of listening to other users on a shared two-way radio communication channel. (See squelch.) It is sometimes referred to as tone squelch. It does this by adding a low frequency audio tone to the voice. Where more than one group of users is on the same radio frequency (called co-channel users), CTCSS circuitry mutes those users who are using a different CTCSS tone or no CTCSS. It is sometimes referred to as a sub-channel, but this is a misnomer because no additional channels are created. All users with different CTCSS tones on the same channel are still transmitting on the identical radio frequency, and their transmissions interfere with each other; howev (en)
  • Die Funktion CTCSS (englisch Continuous Tone Coded Subaudio Squelch oder englisch Continuous Tone Coded Squelch System) (Subton-Squelch-Verfahren; Entstörungscode) erlaubt das gezielte Auswählen bestimmter Funkgeräte innerhalb eines ausgewählten Funkkanals. Beim Senden wird vom Anrufer bei analoger Audioübertragung ein Pilotton mitgesendet, auf den nur die Empfangsgeräte reagieren, die auf diesen Tonruf programmiert sind. Beim Ankommen des Erkennungstons werden sie dann den Empfang zum Mithören öffnen. (de)
  • Em telecomunicações, CTCSS (Acrônimo para o inglês: Continuous Tone-Coded Squelch System)é um cicuito que é usado para reduzir a interferência para outros usuários em um canal compartilhado de rádio comunicação. Onde mais de um grupo de usuários está no mesmo canal (chamado co-usuários), o CTCSS filtra outros usuários, se eles estiverem usando um tom CTCSS diferente ou nenhum CTCSS. (pt)
  • Система CTCSS (Continuous Tone-Coded Squelch System или Continuous Tone-Controlled Selective Signaling) — тонально-кодовая система шумоподавления, применяемая в связных радиостанциях с аналоговой модуляцией. Имеет также русскоязычные разговорные названия - тональный шумоподавитель, «субтон», «пилот-тон». Некоторые производители аппаратуры связи используют свои названия CTCSS: PL - Private Line (Motorola), CG - Channel Guard (Ericsson), QT - Quiet Talk (Kenwood) и др. (ru)
rdfs:label
  • CTCSS (de)
  • Continuous Tone-Coded Squelch System (en)
  • CTCSS (fr)
  • CTCSS (it)
  • CTCSS (nl)
  • CTCSS (pl)
  • CTCSS (ru)
  • CTCSS (pt)
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