picture signal transmitter
21Video modulation — In Amplitude Modulated (AM) broadcast analogue television systems it is possible to modulate the video signal two ways. Peak White Positive Peak white can be made to correspond to peak transmitter power (100 IRE) and the synchronisation (sync)… …
22History of television — The Television technology can be divided along two lines: those developments that depended upon both mechanical and electronic principles, and those dependent only on electronic principles. From the latter descended all modern televisions, but… …
23PALplus — is an extension of the PAL analogue broadcasting system for transmitting 16:9 programs without sacrificing vertical resolution. It followed experiences with the HD MAC and D2 MAC, standards that were incompatible with existing receivers but… …
24Overscan — is extra image area around the four edges of a video image that may not be seen reliably by the viewer. It exists because television sets in the 1930s through 1970s were highly variable in how the video image was framed within the cathode ray… …
25Digital terrestrial television in the United Kingdom — encompasses over 100 television, radio and interactive services broadcast via the UK s terrestrial television network and receivable with a standard television aerial. The majority of services, including those from the existing five analogue… …
26Radio — is the transmission of signals, by modulation of electromagnetic waves with frequencies below those of visible light.Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of… …
27Digital video testing — in broadcast video, for example, is the process of validating and verifying that the video content and other data is being correctly processed, stored and transported. Despite the fact that the data is digital, most digital tv (DTV) system… …
28Coaxial cable — RG 59 flexible coaxial cable composed of: A: outer plastic sheath B: woven copper shield C: inner dielectric insulator D: copper core Coaxial cable, or coax, has an inner conductor surrounded by a flexible, tubular insulating layer, surrounded by …
29Television antenna — A Winegard HD 7084P 68 element VHF/UHF aerial antenna A television antenna, or TV aerial, is an antenna specifically designed for the reception of over the air broadcast television signals, which are transmitted at frequencies from about 41 to… …
30Radar — For other uses, see Radar (disambiguation). A long range radar antenna, known as ALTAIR, used to detect and track space objects in conjunction with ABM testing at the Ronald Reagan Test Site on Kwajalein Atoll …
