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- Skip_zone abstract "A skip zone, also called a silent zone or zone of silence, is a region where a radio transmission can not be received. The zone is located between regions both closer and farther from the transmitter where reception is possible.When using medium to high frequency radio telecommunication, there are radio waves which travel both parallel to the ground, and towards the ionosphere, referred to as a ground wave and sky wave, respectively. A skip zone is an annular region between the farthest points at which the ground wave can be received and the nearest point at which the refracted sky waves can be received. Within this region, no signal can be received because, due to the conditions of the local ionosphere, the relevant sky waves are not reflected but penetrate the ionosphere. The skip zone is a natural phenomenon that cannot be influenced by technical means. Its width depends on the height and shape of the ionosphere and, particularly, on the local ionospheric maximum electron density characterized by critical frequency foF2. It varies mainly with this parameter, being larger for low foF2. With a fixed working frequency it is large by night and may even disappear by day. Transmitting at night is most effective for long distance communication but the skip zone becomes significantly larger. Very high frequency waves and higher normally travel through the ionosphere wherefore communication via skywave is exceptional. A highly ionized Es-Layer that occasionally may appear in Summer may produce such an example.Another method of decreasing the skip zone is by decreasing the frequency of the radio waves. Decreasing the frequency is akin to increasing the ionospheric width. A point is eventually reached when decreasing the frequency results in a zero distance skip zone. In other words, a frequency exists for which vertically incident radio waves will always be refracted back to the Earth. This frequency is equivalent to the ionospheric plasma frequency and is also known as the ionospheric critical frequency, or foF2.Skip zone is the subject of a film 'SKIPZONE' made in 1992 by UK artist, Peter Lee-Jones. It refers to areas in Scottish Highlands where it is difficult to obtain radio and TV reception.".
- Skip_zone thumbnail Skip_Zone_Example.gif?width=300.
- Skip_zone wikiPageID "41719".
- Skip_zone wikiPageLength "2941".
- Skip_zone wikiPageOutDegree "13".
- Skip_zone wikiPageRevisionID "681734778".
- Skip_zone wikiPageWikiLink Category:Radio_frequency_propagation.
- Skip_zone wikiPageWikiLink File:No_Skip_Example.gif.
- Skip_zone wikiPageWikiLink File:Skip_Zone_Example.gif.
- Skip_zone wikiPageWikiLink Ground_wave.
- Skip_zone wikiPageWikiLink Ionosphere.
- Skip_zone wikiPageWikiLink List_of_natural_phenomena.
- Skip_zone wikiPageWikiLink Natural_phenomenon.
- Skip_zone wikiPageWikiLink Radio_wave.
- Skip_zone wikiPageWikiLink Shortwave.
- Skip_zone wikiPageWikiLink Shortwave_radio.
- Skip_zone wikiPageWikiLink Skip_(radio).
- Skip_zone wikiPageWikiLink Sky_wave.
- Skip_zone wikiPageWikiLink Skywave.
- Skip_zone wikiPageWikiLink Surface_wave.
- Skip_zone wikiPageWikiLink Telecommunication.
- Skip_zone wikiPageWikiLinkText "Skip zone".
- Skip_zone wikiPageWikiLinkText "skip zone".
- Skip_zone hasPhotoCollection Skip_zone.
- Skip_zone wikiPageUsesTemplate Template:Cleanup.
- Skip_zone wikiPageUsesTemplate Template:FS1037C_MS188.
- Skip_zone wikiPageUsesTemplate Template:Fact.
- Skip_zone wikiPageUsesTemplate Template:Redirect.
- Skip_zone wikiPageUsesTemplate Template:Telecomm-stub.
- Skip_zone subject Category:Radio_frequency_propagation.
- Skip_zone hypernym Region.
- Skip_zone type Article.
- Skip_zone type Settlement.
- Skip_zone type Article.
- Skip_zone type Page.
- Skip_zone type Source.
- Skip_zone comment "A skip zone, also called a silent zone or zone of silence, is a region where a radio transmission can not be received. The zone is located between regions both closer and farther from the transmitter where reception is possible.When using medium to high frequency radio telecommunication, there are radio waves which travel both parallel to the ground, and towards the ionosphere, referred to as a ground wave and sky wave, respectively.".
- Skip_zone label "Skip zone".
- Skip_zone sameAs Funkloch.
- Skip_zone sameAs Radiowa_martwa_strefa.
- Skip_zone sameAs m.0bggj.
- Skip_zone sameAs Zonă_de_tăcere.
- Skip_zone sameAs Зона_радиомолчания.
- Skip_zone sameAs Radioskugga.
- Skip_zone sameAs Q1422637.
- Skip_zone sameAs Q1422637.
- Skip_zone wasDerivedFrom Skip_zone?oldid=681734778.
- Skip_zone depiction Skip_Zone_Example.gif.
- Skip_zone isPrimaryTopicOf Skip_zone.