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.[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
- â Ultra high frequency at Britannica.com
- â Uses of UHF from eurocontrol.int, European Organisation for the Safety of Air Navigation