frequency selectivity — избирательность по частоте
spectral selectivity — спектральная избирательность
amplitude selectivity — избирательность по амплитуде
coincidence selectivity — избирательность по совпадениям
directional selectivity — избирательность по направлению
English-Russian big polytechnic dictionary. 2014.
Tuned radio frequency receiver — A tuned radio frequency receiver (TRF receiver) is a radio receiver that is usually composed of several tuned radio frequency amplifiers followed by circuits to detect and amplify the audio signal. A 3 stage TRF receiver includes a RF stage, a… … Wikipedia
Radio receiver design — is a complex topic which can be broken down into a series of smaller topics. A radio communication system requires two tuned circuits each at the transmitter and receiver, all four tuned to the same frequency. [Cheney, M., Uth, R., Glenn, J.… … Wikipedia
radio — /ray dee oh /, n., pl. radios, adj., v., radioed, radioing. n. 1. wireless telegraphy or telephony: speeches broadcast by radio. 2. an apparatus for receiving or transmitting radio broadcasts. 3. a message transmitted by radio. adj. 4. pertaining … Universalium
Frequency modulation — See also: Amplitude modulation In telecommunications, frequency modulation (FM) conveys information over a carrier wave by varying its frequency (contrast this with amplitude modulation, in which the amplitude of the carrier is varied while its… … Wikipedia
Radio-controlled model — A radio controlled model (or RC model) is a model that is steerable with the use of radio control. All types of vehicles imaginable have had RC systems installed in them, including cars, boats, planes, and even helicopters and scale railway… … Wikipedia
Radio communication system — A radio communication system send signals by radio. [cite book | title = Wireless Network Performance Handbook | author = Clint Smith, Curt Gervelis | year = 2003 | publisher = McGraw Hill Professional | isbn = 0071406557 | url =… … Wikipedia
Selectivity (electronic) — Selectivity is a measure of the performance of a radio receiver to respond only to the tuned transmission (such as a radio station) and reject other signals nearby, such as another broadcast on an adjacent channel.Selectivity is usually measured… … Wikipedia
Radio control — (often abbreviated to R/C or simply RC) is the use of radio signals to remotely control a device. The term is used frequently to refer to the control of model vehicles from a hand held radio transmitter. Industrial, military, and scientific… … Wikipedia
Radio communications during the September 11 attacks — This article reviews some of the details of radio communications at the September 11, 2001 World Trade Center attacks. [The purpose of revealing the operational details in this article is to allow operators of other communications networks and… … Wikipedia
selectivity — /si lek tiv i tee, see lek /, n. 1. the state or quality of being selective. 2. Elect. the property of a circuit, instrument, or the like, by virtue of which it can distinguish oscillations of a particular frequency. 3. Radio. the ability of a… … Universalium
selectivity — noun a) A measure of how selective something is; discrimination b) The ability of a radio receiver to separate a desired signal frequency from others … Wiktionary
