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2-way DiSEqC switch 4-way DiSEqC switch with attached coaxial cables.. DiSEqC (/ ˈ d aɪ s ɛ k, d aɪ ˈ s ɛ k s i /; [citation needed] short for Digital Satellite Equipment Control) is a special communication protocol for use between a satellite receiver and a device such as a multi-dish switch or a small [1] dish antenna rotor.
The box needed to output radio frequency signals (compatible with a television's antenna input), composite video, and stereo audio. It had to include a remote control, and be compatible with universal remotes. The units had to support both a 4:3 center crop of a 16:9 transmitted image, and a letterboxed rendition of a 16:9 transmitted image.
The AS-Interface is a single-master system, this means a master device exchanges the input and output data with all configured devices. The transmission medium is an unshielded two-wire yellow flat cable. The cable is used for signal transmission and at the same time for power supply (30 V).
Canada had a similar analog TV termination date set to September 1, 2011 (except in some remote northern regions). [citation needed] It was feared that the US switch-off would cause millions of non-cable- and non-satellite-connected TV sets to "go dark". Viewers who did not upgrade, either to a television with a digital tuner or a set-top box ...
This consisted of a number of long horizontal wires or rods arranged to point outward from a common center point. A movable switch could connect opposite pairs of these wires to form a dipole, and by rotating the switch the operator could hunt for the strongest signal. [5] [6] All of these systems were unwieldily and impractical for many uses. [7]
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In the most basic form, a quarter-wavelength section of coaxial cable is prepared such that the inner and outer conductors are separate but still attached to the remaining cable. The outer (shield) conductor is connected to a quarter-wavelength conducting sleeve into which the cable is inserted, and the inner conductor protrudes vertically ...
Remote electrical tilt is abbreviated as RET and it is part of the Antenna Interface Standards Group's open specification for the control interface of antenna devices. [ 2 ] Occasionally, mechanical and electrical tilt will be used together in order to create greater beam tilt in one direction than the other, mainly to accommodate unusual terrain .