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  2. Very high frequency - Wikipedia

    en.wikipedia.org/wiki/Very_high_frequency

    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 ...

  3. Marine VHF radio - Wikipedia

    en.wikipedia.org/wiki/Marine_VHF_radio

    A marine VHF set is a combined transmitter and receiver and only operates on standard, international frequencies known as channels. Channel 16 (156.8 MHz) is the international calling and distress channel .

  4. Radio spectrum - Wikipedia

    en.wikipedia.org/wiki/Radio_spectrum

    2182 kHz is a medium-wave frequency still used for marine emergency communication. Marine VHF radio is used in coastal waters and relatively short-range communication between vessels and to shore stations. Radios are channelized, with different channels used for different purposes; marine Channel 16 is used for calling and emergencies.

  5. List of amateur radio transceivers - Wikipedia

    en.wikipedia.org/wiki/List_of_amateur_radio...

    The Yaesu FT-857 is one of the smallest MF/HF/VHF/UHF multimode general-coverage amateur radio transceivers. [46] The set is built by the Japanese Vertex Standard Corporation and is sold under the Yaesu brand.

  6. Airband - Wikipedia

    en.wikipedia.org/wiki/Airband

    The two are exchanged using the button marked with a double-headed arrow. The tuning control on the right only affects the standby frequency. Airband or aircraft band is the name for a group of frequencies in the VHF radio spectrum allocated to radio communication in civil aviation, sometimes also referred to as VHF, or phonetically as "Victor".

  7. Amateur radio propagation beacon - Wikipedia

    en.wikipedia.org/wiki/Amateur_radio_propagation...

    On 70.005 MHz, WE9XFT is transmitting 3 kW ERP to Europe. At the same location, Justin runs a 144 MHz remote-controlled transmitter, WA1ZMS. It is GPS locked and uses two 5-element stacked Yagis beaming at 60 degrees with a 500 W transmitter running at 7 kW ERP. Both signals are audible in the United States and Europe. [8]

  8. SINCGARS - Wikipedia

    en.wikipedia.org/wiki/SINCGARS

    The SINCGARS operates on any of 2320 channels between 30 and 88 megahertz (MHz) with a channel separation of 25 kilohertz (kHz). It accepts either digital or analog inputs and superimposes the signal onto a radio frequency (RF) carrier wave. In FH mode, the input changes frequency about 100 times per second over portions of the tactical VHF-FM ...

  9. VHF omnidirectional range - Wikipedia

    en.wikipedia.org/wiki/VHF_omnidirectional_range

    DVOR (Doppler VOR) ground station, collocated with DME. On-board VOR display with CDI MCT DVOR, Manchester Airport, United Kingdom.. Very High Frequency Omnidirectional Range Station (VOR) [1] is a type of short-range VHF radio navigation system for aircraft, enabling aircraft with a VOR receiver to determine the azimuth (also radial), referenced to magnetic north, between the aircraft to/from ...

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