frequency-modulation broadcasting
101How television works — Analog televisionUntil the advent of digital television and flat panel displays in the 1990s, all television was based on the transmission and reception of analog signals, displayed on a cathode ray tube. Although a number of different broadcast… …
102antenna — antennal, adj. /an ten euh/, n., pl. antennas for 1, antennae / ten ee/ for 2. 1. a conductor by which electromagnetic waves are sent out or received, consisting commonly of a wire or set of wires; aerial. 2. Zool. one of the jointed, movable,… …
103Noise (electronics) — Electronic noise [1] is a random fluctuation in an electrical signal, a characteristic of all electronic circuits. Noise generated by electronic devices varies greatly, as it can be produced by several different effects. Thermal noise is… …
104Colorburst — Horizontal sync and color burst of PAL videosignal Colorburst is a analog video, composite video signal generated by a video signal generator used to keep the chrominance subcarrier synchronized in a color television signal. By synchronizing an… …
105Edwin Armstrong — Edwin Howard Armstrong (* 18. Dezember 1890 in New York City; † 1. Februar 1954 in New York City) war ein US amerikanischer Elektroingenieur und Erfinder. Er entwickelte und erfand Geräte und Verfahren für die Funktechnik. Einige davon, wie der… …
106Channel 1 (North American TV) — In North America, channel 1 is a former broadcast (over the air) television channel. During the experimental era of TV operation Channel 1 moved around the lower VHF spectrum, swapping places with an early allocation for the FM broadcast band.… …
107Color killer — The color killer is an electronic stage in color TV receiver sets which acts as a muting circuit to cut off the color amplifiers when the TV receives a monochrome signal.[1] Contents 1 Monochromatic transmission 2 Color transmission 3 …
108Walkie-talkie — A walkie talkie (more formally known as a handheld transceiver) is a hand held, portable, two way radio transceiver. Originally developed for the Canadian government during the Second World War by Canadian Donald L. Hings, similar designs were… …
109Channel 1 — In North America, channel 1 is a former broadcast (over the air) television channel (44–50 MHz, with visual at 45.25 and aural at 49.75). History When the U.S. Federal Communications Commission initially allocated broadcast television frequencies …
110Radio FM — La radio FM est la radiodiffusion de programmes radiophoniques en modulation de fréquence (ou FM pour Frequency modulation) dans la gamme des très hautes fréquences (VHF) destinée à être reçues directement par le public en général et s applique a …
