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- Damped_wave abstract "A damped wave is a wave whose amplitude of oscillation decreases with time, eventually going to zero. This term also refers to an early method of radio transmission produced by spark gap transmitters, which consisted of a series of damped electromagnetic waves. Information was carried on this signal by telegraphy, turning the transmitter on and off (on-off keying) to send messages in Morse code. Damped waves were the first practical means of radio communication, used during the wireless telegraphy era which ended around 1920. In radio engineering it is now generally referred to as \"Class B\" emission. However, such transmissions have a wide bandwidth and generate electrical \"noise\" (electromagnetic interference) which interferes with other radio transmissions.Because of their potential to cause interference and their resulting wasteful use of radio spectrum resources, there is an international prohibition against the use of class B damped wave radio emissions, established by the International Telecommunications Union in 1938. However the definition of \"damped waves\" in these regulations is unclear when applied to modern technology, and recently there have been moves to amend this prohibition to exempt emerging radio technologies such as ultra-wideband transmission systems.".
- Damped_wave thumbnail Ondes_amorties.jpg?width=300.
- Damped_wave wikiPageExternalLink 47cfr2.201.htm.
- Damped_wave wikiPageExternalLink sparkmakers2.html.
- Damped_wave wikiPageID "4326611".
- Damped_wave wikiPageLength "3001".
- Damped_wave wikiPageOutDegree "23".
- Damped_wave wikiPageRevisionID "607484699".
- Damped_wave wikiPageWikiLink Amplitude.
- Damped_wave wikiPageWikiLink Amplitude_modulation.
- Damped_wave wikiPageWikiLink Bandwidth_(signal_processing).
- Damped_wave wikiPageWikiLink Broadcast_engineering.
- Damped_wave wikiPageWikiLink Category:Radio_modulation_modes.
- Damped_wave wikiPageWikiLink Continuous_wave.
- Damped_wave wikiPageWikiLink Damping.
- Damped_wave wikiPageWikiLink Electromagnetic_interference.
- Damped_wave wikiPageWikiLink Electromagnetic_radiation.
- Damped_wave wikiPageWikiLink International_Telecommunication_Union.
- Damped_wave wikiPageWikiLink Morse_code.
- Damped_wave wikiPageWikiLink On-off_keying.
- Damped_wave wikiPageWikiLink Oscillation.
- Damped_wave wikiPageWikiLink Radio.
- Damped_wave wikiPageWikiLink Radio_spectrum.
- Damped_wave wikiPageWikiLink Spark-gap_transmitter.
- Damped_wave wikiPageWikiLink Telegraphy.
- Damped_wave wikiPageWikiLink Types_of_radio_emissions.
- Damped_wave wikiPageWikiLink Ultra-wideband.
- Damped_wave wikiPageWikiLink Wave.
- Damped_wave wikiPageWikiLink Wireless_telegraphy.
- Damped_wave wikiPageWikiLink File:Ondes_amorties.jpg.
- Damped_wave wikiPageWikiLinkText "Damped wave".
- Damped_wave wikiPageWikiLinkText "damped wave".
- Damped_wave subject Category:Radio_modulation_modes.
- Damped_wave hypernym Wave.
- Damped_wave type Band.
- Damped_wave type Protocol.
- Damped_wave comment "A damped wave is a wave whose amplitude of oscillation decreases with time, eventually going to zero. This term also refers to an early method of radio transmission produced by spark gap transmitters, which consisted of a series of damped electromagnetic waves. Information was carried on this signal by telegraphy, turning the transmitter on and off (on-off keying) to send messages in Morse code.".
- Damped_wave label "Damped wave".
- Damped_wave sameAs Q3813807.
- Damped_wave sameAs Gedämpfte_Welle.
- Damped_wave sameAs Oscillations_amorties.
- Damped_wave sameAs Onda_smorzata.
- Damped_wave sameAs m.0bx96m.
- Damped_wave sameAs Згасаюча_хвиля.
- Damped_wave sameAs Q3813807.
- Damped_wave wasDerivedFrom Damped_wave?oldid=607484699.
- Damped_wave depiction Ondes_amorties.jpg.
- Damped_wave isPrimaryTopicOf Damped_wave.