Difference between revisions of "Ultra high frequency"
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| − | '''Ultra High frequency''', often abriviated to UHF, refers to a region of the [[electromagnetic radiation]] spectrum consisting of a frequency between 300 and 3000 MHz.<ref>[https://www.britannica.com/technology/UHF Ultra high frequency] at Britannica.com</ref> It is used to carry [[television]] signals for for channels 14 to 83 as well as some types of aircraft and navigation system.<ref>[http://www.eurocontrol.int/services/uhf Uses of UHF] from eurocontrol.int, European Organisation for the Safety of Air Navigation</ref> As the [[wavelength]] for waves in the UHF band is so small, they can be used to create directional beams. Unlike [[Very high frequency|VHF]], they reflect only slightly off the [[ionosphere]]. UHF has a shorter range than lower frequency options | + | '''Ultra High frequency''', often abriviated to UHF, refers to a region of the [[electromagnetic radiation]] spectrum consisting of a frequency between 300 and 3000 MHz.<ref>[https://www.britannica.com/technology/UHF Ultra high frequency] at Britannica.com</ref> It is used to carry [[television]] signals for for channels 14 to 83 as well as some types of aircraft and navigation system.<ref>[http://www.eurocontrol.int/services/uhf Uses of UHF] from eurocontrol.int, European Organisation for the Safety of Air Navigation</ref> As the [[wavelength]] for waves in the UHF band is so small, they can be used to create directional beams. Unlike [[Very high frequency|VHF]], they reflect only slightly off the [[ionosphere]]. UHF has a shorter range than lower frequency options not only because it does not reflect well, but also because the signal itself degrades more quickly. |
==References== | ==References== | ||
Revision as of 21:58, September 14, 2017
Ultra High frequency, often abriviated to UHF, refers to a region of the electromagnetic radiation spectrum consisting of a frequency between 300 and 3000 MHz.[1] It is used to carry television signals for for channels 14 to 83 as well as some types of aircraft and navigation system.[2] As the wavelength for waves in the UHF band is so small, they can be used to create directional beams. Unlike VHF, they reflect only slightly off the ionosphere. UHF has a shorter range than lower frequency options not only because it does not reflect well, but also because the signal itself degrades more quickly.
References
- ↑ Ultra high frequency at Britannica.com
- ↑ Uses of UHF from eurocontrol.int, European Organisation for the Safety of Air Navigation