UHF - ορισμός. Τι είναι το UHF
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Τι (ποιος) είναι UHF - ορισμός

THE 300-3000 MHZ RANGE OF THE ELECTROMAGNETIC SPECTRUM
UHF; Ultra High Frequency; Ultra-high-frequency; Ultrahigh frequency; Ultra-high frequency; Ultrahigh Frequency; Uhf; Uhf radio; UHF Band
  • UHF [[television antenna]] on a residence. This type of antenna, called a [[Yagi–Uda antenna]], is widely used at UHF frequencies.

UHF         
¦ abbreviation ultra-high frequency.
UHF         
UHF is a range of radio waves which allows a radio or television receiver to produce a good quality of sound. UHF is an abbreviation for 'ultra-high frequency'.
...Boston UHF channels.
N-UNCOUNT: oft N n
UHF         
Ultra High Frequency

Βικιπαίδεια

Ultra high frequency

Ultra high frequency (UHF) is the ITU designation for radio frequencies in the range between 300 megahertz (MHz) and 3 gigahertz (GHz), also known as the decimetre band as the wavelengths range from one meter to one tenth of a meter (one decimeter). Radio waves with frequencies above the UHF band fall into the super-high frequency (SHF) or microwave frequency range. Lower frequency signals fall into the VHF (very high frequency) or lower bands. UHF radio waves propagate mainly by line of sight; they are blocked by hills and large buildings although the transmission through building walls is strong enough for indoor reception. They are used for television broadcasting, cell phones, satellite communication including GPS, personal radio services including Wi-Fi and Bluetooth, walkie-talkies, cordless phones, satellite phones, and numerous other applications.

The IEEE defines the UHF radar band as frequencies between 300 MHz and 1 GHz. Two other IEEE radar bands overlap the ITU UHF band: the L band between 1 and 2 GHz and the S band between 2 and 4 GHz.

Παραδείγματα από το σώμα κειμένου για UHF
1. The airwaves are currently occupied by television UHF channels 52 through 6'. The spectrum can carry lots of information across long distances and easily penetrate walls.
2. Motorola received the top ranking in ABI Researchs recent UHF Passive RFID Vendor Matrix with exceptionally high scores for both its product innovation and rate of implementation.
3. China has purchased UHF–band satellite communications jammers and is developing other technologies and concepts for weapons with anti–satellite missions, the report said.
4. A warning was not received because the high frequency radio was unmanned and the UHF set failed to pick up the whole message.
5. Elbit Systems closed 0.' percent higher after yesterday morning saying that its U.S. subsidiary Talla–Com had won multiple contracts to supply UHF SATCOM (Satellite Communications) Power Amplifiers to the U.S. military.