transmitter distortion
51Ultrasound — Not to be confused with Supersonic .Ultrasound is cyclic sound pressure with a frequency greater than the upper limit of human hearing. Although this limit varies from person to person, it is approximately 20 kilohertz (20,000 hertz) in healthy,… …
52Phase-shift keying — Passband modulation v · d · e Analog modulation AM · …
53Terrestrial television — Air TV redirects here. For the anime, see Air (visual novel). Terrestrial television is a mode of television broadcasting which does not involve satellite transmission or cables typically using radio waves through transmitting and receiving… …
54Dipole antenna — A schematic of a half wave dipole antenna connected to an unbalanced coaxial cable. Better practice is to connect the balanced dipole to the unbalanced line with a balun. A dipole antenna is a radio antenna that can be made of a simple wire, with …
55NICAM — This article is about a compression form for digital audio. For the media content rating institute, see Netherlands Institute for the Classification of Audiovisual Media. NICAM stands for Near Instantaneous Companded Audio Multiplex. It is an… …
56Grid bias — is a DC voltage applied to electron tubes (or valves in British English) with three electrodes or more, such as triodes. The control grid (usually the first grid) of these devices is used to control the electron flow from the heated cathode to… …
57405-line television system — The 405 line monochrome analogue television broadcasting system was the first fully electronic television system to be used in regular broadcasting. It was introduced with the BBC Television Service in 1936, suspended for the duration of World… …
58Start Point transmitting station — The Start Point transmitting station is a broadcasting facility at Start Point, Devon, owned by National Grid Wireless. The site is just north west of the Start Point lighthouse.The station currently transmits a single broadcast: BBC Radio 5 Live …
59TV and FM DX — TV DX and FM DX is the active search for distant radio or television stations received during unusual atmospheric conditions. The term DX is an old telegraphic term meaning long distance. VHF/UHF television and radio signals are normally limited… …
60Predistortion — is a technique used to improve the linearity of radio transmitter amplifiers. Radio transmitter amplifiers in most telecommunications systems are required to be linear , in that they must accurately reproduce the signal present at their input. An …
