picture signal transmitter
61Electronic amplifier — A practical amplifier circuit An electronic amplifier is a device for increasing the power of a signal. It does this by taking energy from a power supply and controlling the output to match the input signal shape but with a larger amplitude. In… …
62Amplitude-shift keying — (ASK) is a form of modulation that represents digital data as variations in the amplitude of a carrier wave.The amplitude of an analog carrier signal varies in accordance with the bit stream (modulating signal), keeping frequency and phase… …
63Experimenter Publishing — was an American media company founded by Hugo Gernsback in 1915. The first magazine was The Electrical Experimenter (1913–1931) and the most notable magazines were Radio News (1919–1985) and Amazing Stories (1926–2005). Their radio station, WRNY …
64Chrominance — (chroma or C for short) is the signal used in video systems to convey the color information of the picture, separately from the accompanying luma signal (or Y for short). Chrominance is usually represented as two color difference components: U =… …
65Ultra high frequency — (UHF) designates a range (band) of electromagnetic waves with frequencies between 300 MHz and 3 GHz (3,000 MHz). Also known as the decimeter band or decimeter wave as the wavelengths range from ten to one decimeters. Radio waves with frequencies… …
66Invention of the telephone — The modern telephone is the result of work done by many people, all worthy of recognition of their contributions to the field. Alexander Graham Bell was the first to patent the telephone, an apparatus for transmitting vocal or other sounds… …
67broadcasting — /brawd kas ting, kah sting/, n. 1. the act of transmitting speech, music, visual images, etc., as by radio or television. 2. radio or television as a business or profession: She s training for a career in broadcasting. [1920 25; BROADCAST + ING1] …
68Vacuum tube — This article is about the electronic device. For experiments in an evacuated pipe, see free fall. For the transport system, see pneumatic tube. Modern vacuum tubes, mostly miniature style In electronics, a vacuum tube, electron tube (in North… …
69WCTV — Infobox Broadcast call letters = WCTV station station slogan = Coverage You Can Count On station branding = WCTV Eyewitness News analog = 6 (VHF) digital = 46 (UHF) other chs = affiliations = CBS MyNetworkTV (DT2) network = founded = airdate =… …
70Media in Cornwall — The media in Cornwall has a long and distinct history. The county has a wide range of different types and quality of media. Contents 1 History 1.1 Timeline 1.2 Background 1.3 Telegraphy …
