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single-channel repeater

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  • Single-frequency network — For other uses, see SFN (disambiguation). A single frequency network or SFN is a broadcast network where several transmitters simultaneously send the same signal over the same frequency channel. Contents 1 Overview 2 OFDM and COFDM 3 DVB T SFN …   Wikipedia

  • Channel (communications) — Old telephone wires are a challenging communications channel for modern digital communications. In telecommunications and computer networking, a communication channel, or channel, refers either to a physical transmission medium such as a wire, or …   Wikipedia

  • Radio repeater — A radio repeater is a combination of a radio receiver and a radio transmitter that receives a weak or low level signal and retransmits it at a higher level or higher power, so that the signal can cover longer distances without degradation. This… …   Wikipedia

  • Amateur radio repeater — An amateur radio repeater is an electronic device that receives a weak or low level amateur radio signal and retransmits it at a higher level or higher power, so that the signal can cover longer distances without degradation. Many repeaters are… …   Wikipedia

  • Occupation of the Channel Islands — As part of the Atlantic Wall, between 1940 and 1945 the occupying German forces and the Organisation Todt constructed fortifications round the coasts of the Channel Islands such as this observation tower at Les Landes, Jersey The Channel Islands… …   Wikipedia

  • Saeta TV Channel 10 — Infobox Network network name = Saeta TV Channel 10 country = Flagicon|Uruguay Uruguay network type = Broadcast and television network slogan = el canal uruguayo / the Uruguayan channel owner = Channel 10 / SADREP launch date = December 07, 1956… …   Wikipedia

  • Television channel frequencies — The following tables show the frequencies assigned to broadcast television channels in various regions of the world, along with the ITU letter designator for the system used. The frequencies shown are for the video and audio carriers. The channel …   Wikipedia

  • 12-channel carrier system — is a type of Frequency division multiplexing system. In this system twelve voice channels are multiplexed in a High Frequency Carrier and passed through balanced pair trunk lines similar to those used for Voice Frequency connections. The Bell… …   Wikipedia

  • Two-way radio — receiver which only receives content. Two way radios are available in mobile, stationary base and hand held portable configurations. Hand held radios are often called walkie talkies or handie talkies. A push to talk or Press To Transmit button is …   Wikipedia

  • Selective calling — SECAL redirects here. For the French wine grape also known as Secal, see Jurançon (grape). In a conventional, analog two way radio system, a standard radio has noise squelch or carrier squelch which allows a radio to receive all transmissions.… …   Wikipedia

  • Marine VHF radio — A standard handheld maritime VHF, mandatory on larger vessels under the GMDSS rules …   Wikipedia

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