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A standard channel letter is a three-dimensional graphic sign element. Its channel is fabricated from sheet metal, most often aluminum since it will not rust. A flat sheet of aluminum is typically cut on a table by a computer-controlled router, laser, or water jet, based on a vector-based art file (.cdr, .eps, .ai, .scv, .sci, or .fs).
These simple full break-in channel turn over protocols literally mimic the conversational style in which people interrupt each other mid-syllable during normal voice conversations. Full break-in QSK T/R switch hardware together with use of the simple QSK protocols enables a fast, efficient, fluid conversational style of Morse code communication.
In the United Kingdom, a break-bumper is a brief appearance of a logo before and after advertising breaks, usually that of the television channel being watched. Break-bumpers can either be animated or static. They are sometimes branded to advertise a special programme or event that will be broadcast on that channel, such as sporting events.
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Rail transport terms are a form of technical terminology applied to railways. Although many terms are uniform across different nations and companies, they are by no means universal, with differences often originating from parallel development of rail transport systems in different parts of the world, and in the national origins of the engineers and managers who built the inaugural rail ...
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The station's advertised channel number follows the call letters. In most cases, this is their virtual channel ( PSIP ) number. Stations listed in boldface are owned and operated by NBC through its subsidiary NBCUniversal Owned Television Stations (excluding owned-and-operated stations of Telemundo , unless the station simulcasts a co-owned NBC ...
Letter beacons are radio transmissions of uncertain origin and unknown purpose, consisting of only a single repeating Morse code letter. They have been classified into a number of groups according to transmission code and frequency , and it is supposed that the source for most of them is Russia and began during the Soviet Union .