Editing Ultra high frequency (section)

==Applications==

[[UHF television broadcasting]] channels are used for [[digital television]], although much of the former bandwidth has been reallocated to [[land mobile|land mobile radio system]], [[Terrestrial Trunked Radio|trunked radio]] and [[mobile telephone]] use. 

Since at UHF frequencies transmitting antennas are small enough to install on portable devices, the UHF spectrum is used worldwide for land mobile radio systems, [[two-way radio]]s used for voice communication for commercial, industrial, public safety, and military purposes. Examples of [[Personal radio service|personal radio services]] are [[General Mobile Radio Service|GMRS]], [[PMR446]], and [[UHF CB]].  

The most rapidly-expanding use of the band is [[Wi-Fi]] ([[wireless LAN]]) networks in homes, offices, and public places.  Wi-Fi [[IEEE 802.11]] low band operates between 2412 and 2484&nbsp;MHz.  A second widespread use is for [[cellphone]]s, allowing handheld mobile phones be connected to the [[public switched telephone network]] and the [[Internet]].  Current [[3G]] and [[4G]] [[cellular network]]s use UHF, the frequencies varying among different carriers and countries.  [[Satellite phone]]s also use this frequency in the [[L band]] and [[S band]].