UHF is short for ultra high frequency. It names a band of radio waves — roughly 300 to 3000 megahertz. Because the waves are short, they carry a lot of information, so the sound and picture come through clean and clear.

UHF is short forUHF 是 ultra high frequencyultra high frequency（超高頻）的縮寫。 It names a band of radio waves它指的是一段無線電波的頻段 — roughly 300 to 3000 megahertz大約是 300 到 3000 megahertz（百萬赫）。 Because the waves are short因為波長短, they carry a lot of information能承載的資訊量比較大, so the sound and picture come through clean and clear所以聲音和畫面傳出來比較乾淨清晰。

This is the band most old broadcast TV channels sat on, and it is also where walkie-talkies, taxi radios, airport radios, cordless phones, and most modern phone signals live. You will see it written on the back of an old TV or a radio set, next to VHF (very high frequency), which is the band below it.

This is the band most old broadcast TV channels sat on早期大部分無線電視頻道用的就是這個頻段, and it is also where walkie-talkies, taxi radios, airport radios, cordless phones, and most modern phone signals live而對講機、計程車無線電、機場無線電、無線電話，還有現在大部分的手機訊號，也都在這個頻段裡。 You will see it written on the back of an old TV or a radio set你會在舊電視或收音機的背面看到這個字, next to VHF (very high frequency)旁邊常常寫著 VHF（very high frequency，特高頻）, which is the band below it那是比 UHF 低一階的頻段。

One thing worth knowing: UHF waves travel in more or less a straight line and do not bend well around hills or buildings, so you need to be fairly near a tower, but inside a city they slip through walls better than VHF does. In ordinary talk almost nobody says the full words — engineers, radio hobbyists, and people setting up antennas just say the three letters, U-H-F, said one letter at a time.

One thing worth knowing有一點值得知道: UHF waves travel in more or less a straight line and do not bend well around hills or buildingsUHF 的波大致走直線，遇到山丘或建築物不太會繞過去, so you need to be fairly near a tower所以你得離發射塔比較近才收得到, but inside a city they slip through walls better than VHF does但在城市裡它穿牆的能力反而比 VHF 好。 In ordinary talk almost nobody says the full words平常講話幾乎沒有人會念全稱 — engineers, radio hobbyists, and people setting up antennas工程師、無線電玩家、裝天線的人 just say the three letters, U-H-F, said one letter at a time都是直接一個字母一個字母念 U-H-F。