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A line-replaceable unit ( LRU[ 1] ), lower line-replaceable unit ( LLRU ), [citation needed] line-replaceable component ( LRC ), or line-replaceable item ( LRI) [ 2] is a modular component of an airplane, [ 3] ship or spacecraft [ 4] (or any other manufactured device) that is designed to be replaced quickly at an operating location (1st line).
In electrical and safety engineering, hazardous locations (HazLoc, pronounced haz·lōk) are places where fire or explosion hazards may exist. Sources of such hazards include gases, vapors, dust, fibers, and flyings, which are combustible or flammable. Electrical equipment installed in such locations can provide an ignition source, due to ...
A CAGE code is a unique identifier to label an entity (that is, a specific government agency or corporation at a specific site) that is a CDA, ODA, or MFR of the part defined by the drawing. One corporation can have many CAGE codes, as can one government, because each division, department, and site (campus) can have its own CAGE code.
Many hobby-grade enthusiasts began their fascination with radio-controlled models starting with Toy-Grade models during the 'Golden Age of Toy RC' from the late 1980s—early 1990s when the companies Taiyo Kogyo Co. Ltd (Japan) and Tyco Toys (USA) dominated the market and became household names, with their products starring in TV shows ...
A low-noise block downconverter ( LNB) is the receiving device mounted on satellite dishes used for satellite TV reception, which collects the radio waves from the dish and converts them to a signal which is sent through a cable to the receiver inside the building. Also called a low-noise block, [ 1][ 2] low-noise converter ( LNC ), or even low ...
Noise temperature (antenna) In radio frequency (RF) applications such as radio, radar and telecommunications, noise temperature of an antenna is a measure of the noise power density contributed by the antenna to the overall RF receiver system. It is defined as "the temperature of a resistor having an available thermal noise power per unit ...
A field-replaceable unit ( FRU) [ 1] is a printed circuit board, part, or assembly that can be quickly and easily removed from a computer or other piece of electronic equipment, and replaced by the user or a technician without having to send the entire product or system to a repair facility. FRUs allow a technician lacking in-depth product ...
A television antenna, also called a television aerial (in British English ), is an antenna specifically designed for use with a television receiver (TV) to receive terrestrial over-the-air (OTA) broadcast television signals from a television station. Terrestrial television is broadcast on frequencies from about 47 to 250 MHz in the very high ...