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- Noise_(radio) abstract "In radio reception, noise is the superposition of white noise and other disturbing influences on the signal, caused either by thermal noise and other electronic noise from receiver input circuits or by interference from radiated electromagnetic noise picked up by the receiver's antenna. If no noise were picked up with radio signals, even weak transmissions could be received at virtually any distance by making a radio receiver that was sensitive enough. In practice, this doesn't work, and a point is reached where the only way to extend the range of a transmission is to increase the transmitter power.Thermal noise can be made lower by cooling the circuits, but this is only usually worthwhile on radio telescopes. In other applications the limiting noise source depends on the frequency range in use. At low frequencies (longwave or mediumwave) and at high frequencies (shortwave), interference caused by lightning or by nearby electrical impulses in electrical switches, motors, vehicle ignition circuits, computers, and other man-made sources tends to swamp transmissions with thermal noise. These noises are often referred to as static. Atmospheric noise is radio noise caused by natural atmospheric processes, primarily lightning discharges in thunderstorms. At very high frequency and ultra high frequency these sources can still be important, but at a much lower level, such that thermal noise is usually the limiting factor. Cosmic background noise is experienced at frequencies above about 15 MHz when highly directional antennas are pointed toward the sun or to certain other regions of the sky such as the center of the Milky Way Galaxy.Electromagnetic noise can interfere with electronic equipment in general, causing malfunction, and in recent years standards have been laid down for the levels of electromagnetic radiation that electronic equipment is permitted to radiate. These standards are aimed at ensuring what is referred to as electromagnetic compatibility, or EMC.".
- Noise_(radio) wikiPageExternalLink 15.765101.
- Noise_(radio) wikiPageExternalLink 15.784164.
- Noise_(radio) wikiPageExternalLink 49.233212.
- Noise_(radio) wikiPageExternalLink 8.660963.
- Noise_(radio) wikiPageExternalLink WCC.1997.622284.
- Noise_(radio) wikiPageExternalLink en.
- Noise_(radio) wikiPageID "3339042".
- Noise_(radio) wikiPageLength "3526".
- Noise_(radio) wikiPageOutDegree "25".
- Noise_(radio) wikiPageRevisionID "554807219".
- Noise_(radio) wikiPageWikiLink Antenna_(radio).
- Noise_(radio) wikiPageWikiLink Atmospheric_noise.
- Noise_(radio) wikiPageWikiLink Category:Noise.
- Noise_(radio) wikiPageWikiLink Computer.
- Noise_(radio) wikiPageWikiLink Cosmic_noise.
- Noise_(radio) wikiPageWikiLink Electric_motor.
- Noise_(radio) wikiPageWikiLink Electromagnetic_compatibility.
- Noise_(radio) wikiPageWikiLink Electromagnetic_radiation.
- Noise_(radio) wikiPageWikiLink High_frequency.
- Noise_(radio) wikiPageWikiLink Ignition_system.
- Noise_(radio) wikiPageWikiLink International_Telecommunication_Union.
- Noise_(radio) wikiPageWikiLink Johnson–Nyquist_noise.
- Noise_(radio) wikiPageWikiLink Lightning.
- Noise_(radio) wikiPageWikiLink Longwave.
- Noise_(radio) wikiPageWikiLink Low_frequency.
- Noise_(radio) wikiPageWikiLink Medium_wave.
- Noise_(radio) wikiPageWikiLink Noise.
- Noise_(radio) wikiPageWikiLink Noise_(electronics).
- Noise_(radio) wikiPageWikiLink Radio.
- Noise_(radio) wikiPageWikiLink Radio_telescope.
- Noise_(radio) wikiPageWikiLink Shortwave_radio.
- Noise_(radio) wikiPageWikiLink Switch.
- Noise_(radio) wikiPageWikiLink Ultra_high_frequency.
- Noise_(radio) wikiPageWikiLink Very_high_frequency.
- Noise_(radio) wikiPageWikiLink White_noise.
- Noise_(radio) wikiPageWikiLinkText ""static"".
- Noise_(radio) wikiPageWikiLinkText "Atmospheric noise".
- Noise_(radio) wikiPageWikiLinkText "Noise (radio)".
- Noise_(radio) wikiPageWikiLinkText "Radio static".
- Noise_(radio) wikiPageWikiLinkText "background noise".
- Noise_(radio) wikiPageWikiLinkText "noise"".
- Noise_(radio) wikiPageWikiLinkText "noise".
- Noise_(radio) wikiPageWikiLinkText "radio noise".
- Noise_(radio) wikiPageWikiLinkText "radio static".
- Noise_(radio) wikiPageWikiLinkText "shortwave radio static".
- Noise_(radio) wikiPageWikiLinkText "static disturbances".
- Noise_(radio) wikiPageWikiLinkText "static interference".
- Noise_(radio) wikiPageWikiLinkText "static noise".
- Noise_(radio) wikiPageWikiLinkText "static".
- Noise_(radio) wikiPageWikiLinkText "unwanted electrical fluctuations in signals received by AM radios".
- Noise_(radio) wikiPageUsesTemplate Template:No_footnotes.
- Noise_(radio) wikiPageUsesTemplate Template:Noise.
- Noise_(radio) wikiPageUsesTemplate Template:Reflist.
- Noise_(radio) subject Category:Noise.
- Noise_(radio) hypernym Superposition.
- Noise_(radio) type Redirect.
- Noise_(radio) comment "In radio reception, noise is the superposition of white noise and other disturbing influences on the signal, caused either by thermal noise and other electronic noise from receiver input circuits or by interference from radiated electromagnetic noise picked up by the receiver's antenna. If no noise were picked up with radio signals, even weak transmissions could be received at virtually any distance by making a radio receiver that was sensitive enough.".
- Noise_(radio) label "Noise (radio)".
- Noise_(radio) sameAs Q7047674.
- Noise_(radio) sameAs m.096m7z.
- Noise_(radio) sameAs Q7047674.
- Noise_(radio) wasDerivedFrom Noise_(radio)?oldid=554807219.
- Noise_(radio) isPrimaryTopicOf Noise_(radio).