Radioelektronikos terminų žodynas. – Vilnius : BĮ UAB „Litimo“. Kazimieras Gaivenis, Gytis Juška, Vidas Kalesinskas. 2000.
Frequency-hopping spread spectrum — (FHSS) is a method of transmitting radio signals by rapidly switching a carrier among many frequency channels, using a pseudorandom sequence known to both transmitter and receiver. A spread spectrum transmission offers three main advantages over… … Wikipedia
Band-stop filter — A generic ideal band stop filter, showing both positive and negative angular frequencies In signal processing, a band stop filter or band rejection filter is a filter that passes most frequencies unaltered, but attenuates those in a specific… … Wikipedia
Frequency — For other uses, see Frequency (disambiguation). Three cyclically flashing lights, from lowest frequency (top) to highest frequency (bottom). f is the frequency in hertz (Hz), meaning the number of cycles per second. T is the period in seconds (s) … Wikipedia
Frequency allocation — The electromagnetic spectrum is an aspect of the physical world which, like land, water, and air, is subject to usage limitations. Use of radio frequency bands of the electromagnetic spectrum is regulated by governments in most countries, in a… … Wikipedia
Limit — A limit can be: * Limit (mathematics), including: ** Limit of a function ** Limit of a sequence ** One sided limit ** Limit superior and limit inferior ** Limit of a net ** Limit point ** Limit (category theory) * A constraint (mathematical,… … Wikipedia
Citizens' band radio — Typical 1980s CB base station, used with outdoor antenna. This radio may also be used in an automobile, since it is powered by 13.8V DC. Shown with Astatic Power D 104 desk mic … Wikipedia
FM broadcast band — The FM broadcast band, used for FM broadcast radio by radio stations, differs between different parts of the world. In Europe and Africa (ITU region 1), it spans from 87.5 to 108.0 megahertz (MHz), while in America (ITU region 2) it goes only… … Wikipedia
Orthogonal frequency-division multiplexing — Passband modulation v · d · e Analog modulation AM · … Wikipedia
Radio-frequency identification — (RFID) is a technology that uses radio waves to transfer data from an electronic tag, called RFID tag or label, attached to an object, through a reader for the purpose of identifying and tracking the object. Some RFID tags can be read from… … Wikipedia
80-meter band — The 80 meter or 3.5 MHz band is a core amateur radio frequency band, allocated frequencies from 3.5 to 4.0 MHz in IARU Region 2, and generally 3.5 to 3.8 or 3.9 MHz in Regions 1 and 3 respectively. The portion of the band used for voice… … Wikipedia
