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Charter Spectrum service logo. Charter Communications, Inc., is an American telecommunications and mass media company with services branded as Spectrum.With over 32 million customers in 41 states, it is the largest cable operator in the United States by subscribers, just ahead of Comcast, and the largest pay TV operator ahead of Comcast and AT&T.
Liberty Communications of Puerto Rico LLC ( d/b/a Liberty) is a telecommunications company that provides broadband Internet access, VoIP, television and wireless services covering the entire island of Puerto Rico (wireless in Puerto Rico and US Virgin Islands ). The company is headquartered in San Juan and has over a million television ...
Spectrum management is a growing problem due to the growing number of spectrum uses. Uses include: over-the-air broadcasting, (which started in 1920); government and research uses (which include defense, public safety—maritime, air, police—resource management, transport, and radio astronomy); commercial services to the public (including voice, data, home networking); and industrial ...
Spectrum is the trade name of Charter Communications, which is widely used by market consumers and commercial cable television channels, internet, telephone, and wireless service providers. The brand was first introduced in 2014; prior to that, these services were marketed primarily under the Charter brand. Following the acquisitions of Time ...
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. From low to high frequency these are: radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and ...
v. t. e. In telecommunication, especially radio communication, spread spectrum are techniques by which a signal (e.g., an electrical, electromagnetic, or acoustic) generated with a particular bandwidth is deliberately spread in the frequency domain over a wider frequency band. Spread-spectrum techniques are used for the establishment of secure ...
The band spectrum is the combination of many different spectral lines, resulting from molecular vibrational, rotational, and electronic transition. Spectroscopy studies spectral bands for astronomy and other purposes. Many systems are characterized by the spectral band to which they respond. For example: