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  2. BBC Radio 5 Sports Extra - Wikipedia

    en.wikipedia.org/wiki/BBC_Radio_5_Sports_Extra

    BBC Radio 5 Sports Extra (formerly BBC Radio 5 Live Sports Extra) is a British digital radio station owned and operated by the BBC, and specialising in extended live sports coverage. It is a sister station to BBC Radio 5 Live and shares facilities, presenters and management, and is a department of the BBC North Group division.

  3. List of optics equations - Wikipedia

    en.wikipedia.org/wiki/List_of_optics_equations

    Defining equation (physical chemistry) List of electromagnetism equations; List of equations in classical mechanics; List of equations in gravitation; List of equations in nuclear and particle physics; List of equations in quantum mechanics; List of equations in wave theory; List of relativistic equations

  4. BBC Radio 5 Live - Wikipedia

    en.wikipedia.org/wiki/BBC_Radio_5_Live

    The success of Radio 4 News FM during the first Gulf War (1991) led the BBC to propose the launch of a rolling-news service. Initially the plan was to broadcast a rolling news service on BBC Radio 4's long wave frequency; but this met with considerable opposition, both internally and externally, [4] so the BBC decided to close BBC Radio 5 and replace the old service's educational and children ...

  5. BBC Radio Five Live Sports Extra - Wikipedia

    en.wikipedia.org/?title=BBC_Radio_Five_Live...

    Pages for logged out editors learn more. Contributions; Talk; BBC Radio Five Live Sports Extra

  6. Radio spectrum - Wikipedia

    en.wikipedia.org/wiki/Radio_spectrum

    Radio waves are defined by the ITU as: "electromagnetic waves of frequencies arbitrarily lower than 3000 GHz, propagated in space without artificial guide". [5] At the high frequency end the radio spectrum is bounded by the infrared band. The boundary between radio waves and infrared waves is defined at different frequencies in different ...

  7. Signal strength and readability report - Wikipedia

    en.wikipedia.org/wiki/Signal_strength_and...

    A signal strength and readability report is a standardized format for reporting the strength of the radio signal and the readability (quality) of the radiotelephone (voice) or radiotelegraph (Morse code) signal transmitted by another station as received at the reporting station's location and by their radio station equipment. These report ...

  8. Category:BBC Radio 5 Sports Extra - Wikipedia

    en.wikipedia.org/wiki/Category:BBC_Radio_5...

    Pages in category "BBC Radio 5 Sports Extra" The following 3 pages are in this category, out of 3 total. This list may not reflect recent changes. B.

  9. Electromagnetic spectrum - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_spectrum

    For example, many hydrogen atoms emit a radio wave photon that has a wavelength of 21.12 cm. Also, frequencies of 30 Hz and below can be produced by and are important in the study of certain stellar nebulae [4] and frequencies as high as 2.9 × 10 27 Hz have been detected from astrophysical sources. [5]