receiver-transmitter unit
111materials testing — Introduction measurement of the characteristics and behaviour of such substances as metals, ceramics, or plastics under various conditions. The data thus obtained can be used in specifying the suitability of materials for various… …
112Space-based solar power — Left: Part of the solar energy is lost on its way through the atmosphere by the effects of reflection and absorption. Right: Space based solar power systems convert sunlight to microwaves outside the atmosphere, avoiding these losses, and the… …
113Mobile radio — This article is about professional equipment. For mobile radios used in amateur radio, see amateur radio mobile operation. Mobile radio or mobiles refer to wireless communications systems and devices which are based on radio frequencies, and… …
114Sputnik 1 — Infobox Spacecraft Name = Sputnik 1 Спутник 1 Organization = Council of Ministers of the USSR Major Contractors = OKB 1, Soviet Ministry of Radiotechnical Industry Mission Type = Atmospheric studies Satellite Of = Earth Launch = October 4, 1957,… …
115Marine VHF radio — A standard handheld maritime VHF, mandatory on larger vessels under the GMDSS rules …
116Matched filter — In telecommunications, a matched filter (originally known as a North filter[1]) is obtained by correlating a known signal, or template, with an unknown signal to detect the presence of the template in the unknown signal. This is equivalent to… …
117Link budget — A link budget is the accounting of all of the gains and losses from the transmitter, through the medium (free space, cable, waveguide, fiber, etc.) to the receiver in a telecommunication system. It accounts for the attenuation of the transmitted… …
118GPS tracking — A GPS tracking unit is a device that uses the Global Positioning System to determine the precise location of a vehicle, person, or other asset to which it is attached and to record the position of the asset at regular intervals. The recorded… …
119Pressure measurement — The construction of a bourdon tube gauge, construction elements are made of brass Many techniques have been developed for the measurement of pressure and vacuum. Instruments used to measure pressure are called pressure gauges or vacuum gauges. A… …
120ENOS Rescue-System — ENOS stands for the German product “Elektronisches Notruf – und Ortungssystem”, Electronic Rescue and Locating System. The ENOS System is a rescue system developed for water sports, especially scuba diving, but also windsurfing, jet skiing,… …
