ultra-high frequency 
(abbreviation UHF)
noun
A radio frequency in the range 300 to 3,000 MHz.The VRC - 103 will be used as an aviation battalion flight operations radio, operating in multiple band frequencies in high frequency and ultra-high frequency bands....
- Today's business radios use either very high frequency or ultra-high frequency bands.
- TVS was awarded a permanent ultra-high frequency 31 television broadcasting licence by the Australian Broadcasting Authority last month, even though TVS said it needs at least eight months to be ready to begin transmission.