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  2. File:United States Frequency Allocations Chart 2016 - The ...

    en.wikipedia.org/wiki/File:United_States...

    This image or file is a work of a United States Department of Commerce employee, taken or made as part of that person's official duties. As a work of the U.S. federal government , the image is in the public domain .

  3. File:Electromagnetic spectrum diagram.pdf - Wikipedia

    en.wikipedia.org/wiki/File:Electromagnetic...

    This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file.

  4. Electromagnetic spectrum - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_spectrum

    A diagram of the electromagnetic spectrum, showing various properties across the range of frequencies and wavelengths. The electromagnetic spectrum is the full range of electromagnetic radiation, organized by frequency or wavelength. The spectrum is divided into separate bands, with different names for the electromagnetic waves within each band.

  5. Frequency allocation - Wikipedia

    en.wikipedia.org/wiki/Frequency_allocation

    Frequency allocation (or spectrum allocation) is the part of spectrum management dealing with the designation and regulation of the electromagnetic spectrum into frequency bands, normally done by governments in most countries. [1]

  6. Spectrum (physical sciences) - Wikipedia

    en.wikipedia.org/wiki/Spectrum_(physical_sciences)

    The radio spectrum is the part of the electromagnetic spectrum corresponding to frequencies lower below 300 GHz, which corresponds to wavelengths longer than about 1 mm. The microwave spectrum corresponds to frequencies between 300 MHz (0.3 GHz ) and 300 GHz and wavelengths between one meter and one millimeter.

  7. Radio spectrum - Wikipedia

    en.wikipedia.org/wiki/Radio_spectrum

    A radio band is a small frequency band (a contiguous section of the range of the radio spectrum) in which channels are usually used or set aside for the same purpose. To prevent interference and allow for efficient use of the radio spectrum, similar services are allocated in bands.

  8. Orders of magnitude (frequency) - Wikipedia

    en.wikipedia.org/.../Orders_of_magnitude_(frequency)

    Electromagnetic – cordless telephone frequency introduced in 2003 10 10: 10 GHz: 3 GHz to 30 GHz: Electromagnetic – super high frequency: 60 GHz: Electromagnetic – 60 GHz Wi-Fi (WiGig) introduced in 2010 10 11: 100 GHz 160.2 GHz: Electromagnetic – peak of cosmic microwave background radiation: 845 GHz: Fastest transistor (December 2006 ...

  9. Outline of radio - Wikipedia

    en.wikipedia.org/wiki/Outline_of_radio

    Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of space. Information is carried by systematically changing some property of the radiated waves, such as amplitude, frequency, phase, or pulse width. When radio waves pass an electrical conductor, the oscillating fields ...