Television transmitter (original) (raw)
Televizní vysílač je zařízení pro vysílání televizního signálu k televizním přijímačům. V Česku existují vysílače signálu DVB-T (pro regionální sítě), ale také pro nový vysílací standard DVB-T2.
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| dbo:abstract | Televizní vysílač je zařízení pro vysílání televizního signálu k televizním přijímačům. V Česku existují vysílače signálu DVB-T (pro regionální sítě), ale také pro nový vysílací standard DVB-T2. (cs) Televida elsendigilo estas ekipaĵo por elsendado de televida signalo al televida akceptilo. Nuntempe ekzistas elsendigiloj, disvastigataj aŭ . Kelkaj televidaj elsendigiloj laboras kiel konvertiloj de la televida signalo. (eo) Stasiun relai televisi atau umumnya disebut stasiun pemancar TV atau satuan transmisi TV adalah suatu tempat atau lokasi yang berguna untuk memancarkan siaran televisi di wilayah yang akan dipancarkan setelah disepakati oleh pemilik stasiun televisi tersebut. Setiap stasiun relai mempunyai pengendali siaran atau disebut dengan pengulang (repeater) dan pemancar (transmitter). Pengulang berguna untuk mengatur penerimaan siaran televisi dari studio televisi masing-masing dari kantor pusat (misalnya dari Jakarta). Stasiun relai televisi umumnya ditempatkan di dataran tinggi dan jauh dari permukiman, agar dapat memancarkan siaran televisinya ke seluruh jangkauan areanya. (in) A television transmitter is a transmitter that is used for terrestrial (over-the-air) television broadcasting. It is an electronic device that radiates radio waves that carry a video signal representing moving images, along with a synchronized audio channel, which is received by television receivers ('televisions' or 'TVs') belonging to a public audience, which display the image on a screen. A television transmitter, together with the broadcast studio which originates the content, is called a television station. Television transmitters must be licensed by governments, and are restricted to a certain frequency channel and power level. They transmit on frequency channels in the VHF and UHF bands. Since radio waves of these frequencies travel by line of sight, they are limited by the horizon to reception distances of 40–60 miles depending on the height of transmitter station. Television transmitters use one of two different technologies: analog, in which the picture and sound are transmitted by analog signals modulated onto the radio carrier wave, and digital in which the picture and sound are transmitted by digital signals. The original television technology, analog television, began to be replaced in a transition beginning in 2006 in many countries with digital television (DTV) systems. These transmit pictures in a new format called HDTV (high-definition television) which has higher resolution and a wider screen aspect ratio than analog. DTV makes more efficient use of scarce radio spectrum bandwidth, as several DTV channels can be transmitted in the same bandwidth as a single analog channel. In both analog and digital television, different countries use several incompatible modulation standards to add the video and audio signals to the radio carrier wave. The principles of primarily analog systems are summarized as they are typically more complex than digital transmitters due to the multiplexing of VSB and FM modulation stages. (en) Nadajnik – urządzenie służące do emisji sygnału, zgodnego z założeniami konstrukcyjnymi. Sygnał może być niezmienny w zadanym przedziale czasu (nadajnik sygnalizacyjny) lub zmieniać się w zależności od sygnału sterującego. Sygnał emitowany jest najczęściej w postaci falowej. Wyróżnić można nadajniki fali: * elektromagnetycznej (np. w radiu, radarze), * świetlnej podczerwonej (np. w pilocie na podczerwień), * świetlnej widzialnej (np. w latarni morskiej), * akustycznej ultradźwiękowej (np. w hydrolokatorze), * i inne. (pl) In algemene zin is een zender de uitsturende partij bij informatieoverdracht over een medium en is een instrument dat zorgt voor modulatie van de informatie om het geschikt te maken voor overdracht. In gespreksverkeer spreekt men van zender van een boodschap, bij brief- of digitaal verkeer van afzender van een bericht. (nl) |
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| rdfs:comment | Televizní vysílač je zařízení pro vysílání televizního signálu k televizním přijímačům. V Česku existují vysílače signálu DVB-T (pro regionální sítě), ale také pro nový vysílací standard DVB-T2. (cs) Televida elsendigilo estas ekipaĵo por elsendado de televida signalo al televida akceptilo. Nuntempe ekzistas elsendigiloj, disvastigataj aŭ . Kelkaj televidaj elsendigiloj laboras kiel konvertiloj de la televida signalo. (eo) Stasiun relai televisi atau umumnya disebut stasiun pemancar TV atau satuan transmisi TV adalah suatu tempat atau lokasi yang berguna untuk memancarkan siaran televisi di wilayah yang akan dipancarkan setelah disepakati oleh pemilik stasiun televisi tersebut. Setiap stasiun relai mempunyai pengendali siaran atau disebut dengan pengulang (repeater) dan pemancar (transmitter). Pengulang berguna untuk mengatur penerimaan siaran televisi dari studio televisi masing-masing dari kantor pusat (misalnya dari Jakarta). Stasiun relai televisi umumnya ditempatkan di dataran tinggi dan jauh dari permukiman, agar dapat memancarkan siaran televisinya ke seluruh jangkauan areanya. (in) Nadajnik – urządzenie służące do emisji sygnału, zgodnego z założeniami konstrukcyjnymi. Sygnał może być niezmienny w zadanym przedziale czasu (nadajnik sygnalizacyjny) lub zmieniać się w zależności od sygnału sterującego. Sygnał emitowany jest najczęściej w postaci falowej. Wyróżnić można nadajniki fali: * elektromagnetycznej (np. w radiu, radarze), * świetlnej podczerwonej (np. w pilocie na podczerwień), * świetlnej widzialnej (np. w latarni morskiej), * akustycznej ultradźwiękowej (np. w hydrolokatorze), * i inne. (pl) In algemene zin is een zender de uitsturende partij bij informatieoverdracht over een medium en is een instrument dat zorgt voor modulatie van de informatie om het geschikt te maken voor overdracht. In gespreksverkeer spreekt men van zender van een boodschap, bij brief- of digitaal verkeer van afzender van een bericht. (nl) A television transmitter is a transmitter that is used for terrestrial (over-the-air) television broadcasting. It is an electronic device that radiates radio waves that carry a video signal representing moving images, along with a synchronized audio channel, which is received by television receivers ('televisions' or 'TVs') belonging to a public audience, which display the image on a screen. A television transmitter, together with the broadcast studio which originates the content, is called a television station. Television transmitters must be licensed by governments, and are restricted to a certain frequency channel and power level. They transmit on frequency channels in the VHF and UHF bands. Since radio waves of these frequencies travel by line of sight, they are limited by the horizon (en) |
| rdfs:label | Televizní vysílač (cs) Televida elsendigilo (eo) Stasiun relai televisi (in) Trasmettitore televisivo (it) Nadajnik (pl) Zender (nl) Television transmitter (en) |
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