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VHF    
甚高频

甚高频

VHF
n 1: a group of illnesses caused by a viral infection (usually
restricted to a specific geographic area); fever and
gastrointestinal symptoms are followed by capillary
hemorrhage [synonym: {hemorrhagic fever}, {haemorrhagic fever},
{viral hemorrhagic fever}, {viral haemorrhagic fever},
{VHF}]
2: 30 to 300 megahertz [synonym: {very high frequency}, {VHF}]

34 Moby Thesaurus words for "VHF":
AF, CPS, EHF, HF, Hz, MF, RF, SHF, UHF, VLF, audio frequency,
carrier frequency, cycles, extremely high frequency, frequency,
frequency spectrum, hertz, high frequency, intermediate frequency,
kilocycles, kilohertz, low frequency, lower frequencies,
medium frequency, megacycles, megahertz, radio frequency,
spark frequency, spectrum, superhigh frequency,
ultrahigh frequency, upper frequencies, very high frequency,
very low frequency


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  • Very high frequency - Wikipedia
    Very high frequency (VHF) is the ITU designation [1][2][3] for the range of radio frequency electromagnetic waves (radio waves) from 30 to 300 megahertz (MHz), with corresponding wavelengths of ten meters to one meter Frequencies immediately below VHF are denoted high frequency (HF), and the next higher frequencies are known as ultra high frequency (UHF) VHF radio waves propagate mainly by
  • The Differences Between UHF and VHF Radio Frequencies
    UHF vs VHF Radio Frequencies: Understanding the Differences To first understand UHF vs VHF radio frequencies, you must learn that all communication systems, including your cell phone or any two-way radio system, work using an operating frequency The government oversees these frequencies as well as the communication devices that use them
  • VHF vs. UHF Radio Frequencies: Differences Explained
    Differences between VHF vs UHF Frequencies The primary difference between UHF and VHF radios is their frequency UHF radios have a wider range of frequencies and work well indoors, VHF radios have smaller frequency so it allows them to reach long distances but also means they can be interrupted by other radios
  • VHF vs UHF Radios: The Differences Explained
    What are the main differences between UHF and VHF? The primary distinction between these different spectrums is the frequency range spectrum VHF frequencies operate between 30 MHz and 300 MHz and UHF Frequencies are between 300 MHz and 3GHz In the UHF band, radio waves travel almost exclusively by line of sight (LOS) propagation and some ground propagation This means UHF two-way radios
  • VHF | Marine, Airwaves Radios | Britannica
    VHF, conventionally defined portion of the electromagnetic spectrum including any radiation with a wavelength between 1 and 10 metres and a frequency between 300 and 30 megahertz VHF signals are widely employed for television and radio transmissions In the United States and Canada, television
  • What Is the Difference between a UHF and a VHF Antenna?
    UHF vs VHF: Which is Better? Analog TV Broadcasting and VHF You might remember the days of analog television, before the transition to digital TV (DTV) in 2009 Back then, most TV stations broadcast on the VHF band (broadcast channels 2 – 13) because those lower frequencies generally provided clearer reception over a limited distance than the higher frequencies (UHF) at the time
  • U. S. VHF Channel Information | Navigation Center
    Additional Information, Frequencies, Charts Also available are International VHF Maritime Radio Channels and Frequencies, Narrowband VHF Maritime Channels and Frequencies, Radio Information for Boaters, and U S Coast Guard VHF Distress and Safety Coverage Charts
  • VHF Marine Radio - Seattle Yacht Club
    VHF Marine Radio Procedures (Supplied by the North Pacific Marine Radio Council and U S Coast Guard)
  • U. S. VHF Marine Radio Channels and Frequencies
    VHF stands for V ery H igh F requency, and it’s used for ship-to-ship, ship-to-shore, and even ship-to-aircraft two-way communications There are plenty of marine channel frequencies, and a few of them are constantly monitored for commercial, private, and coast guard use
  • Marine VHF radio - Wikipedia
    A VHF set and a VHF channel 70 DSC set, the DSC on top A vintage (76–89) marine VHF radiotelephone Marine VHF radio is a worldwide system of two-way radio transceivers on ships and watercraft used for bidirectional voice communication from ship-to-ship, ship-to-shore (for example with harbormasters), and in certain circumstances ship-to-aircraft





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