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  2. Maritime mobile amateur radio - Wikipedia

    en.wikipedia.org/wiki/Maritime_mobile_amateur_radio

    An amateur radio installation on a 28' yacht, including 100W HF transceiver with microphone, manual antenna tuner, and morse key. Maritime mobile amateur radio is an amateur radio transmission license that allows maritime operators to install and use radio while they operating at sea. The call sign of operators is extended by adding the suffix ...

  3. Antenna tuner - Wikipedia

    en.wikipedia.org/wiki/Antenna_tuner

    An antenna tuner, a matchbox, transmatch, antenna tuning unit (ATU), antenna coupler, or feedline coupler is a device connected between a radio transmitter or receiver and its antenna to improve power transfer between them by matching the impedance of the radio to the antenna's feedline. Antenna tuners are particularly important for use with ...

  4. Antenna tuning hut - Wikipedia

    en.wikipedia.org/wiki/Antenna_tuning_hut

    An antenna tuning hut or helix house is a small shed at the base of a longwave or mediumwave radio transmitting antenna. It contains antenna tuner — radio equipment for coupling the power from the feedline to the antenna. [1] Alternative names include antenna tuning house, coupling hut, and dog house.

  5. Digital selective calling - Wikipedia

    en.wikipedia.org/wiki/Digital_Selective_Calling

    A Sailor VHF DSC unit. Digital selective calling (DSC) is a standard for transmitting predefined digital messages via the medium-frequency (MF), high-frequency (HF) and very-high-frequency (VHF) maritime radio systems. It is a core part of the Global Maritime Distress Safety System (GMDSS). [1]

  6. File:Antenna Tuning Unit, 250 KW AM station, 6 tower array.jpg

    en.wikipedia.org/wiki/File:Antenna_Tuning_Unit...

    What links here; Upload file; Special pages; Printable version; Page information; Get shortened URL

  7. Next-Generation Offshore Patrol Vessel program - Wikipedia

    en.wikipedia.org/wiki/Next-Generation_Offshore...

    [1] [2] The OPV will use the UNIted COmbined Radio aNtenna (UNICORN) NORA-50 integration mast, which has a bar-shaped dome that houses the antennas for tactical data link, Tactical Air Navigation System (TACAN), and communications. According to ATLA, UNICORN has a shape designed to reduce the radar cross section (RCS), which makes it stealthy.

  8. List of IACC yachts - Wikipedia

    en.wikipedia.org/wiki/List_of_IACC_yachts

    Tuning and training boat for 2003 AC defence. Trial boat (never raced) Along with NZL–82, boat is in Cabo San Lucas, MX. Staffed by team members of ETNZ, public can sail on actual America's Cup Yacht via www.cabo-adventures.com. NZL–82 NZL 82: Emirates Team New Zealand: 2003 AC defender. Beaten 5–0 by Alinghi

  9. List of Marconi wireless stations - Wikipedia

    en.wikipedia.org/wiki/List_of_Marconi_wireless...

    A double antenna tuning inductor house near the summit of Cefn Du and to the rear of the 1914 antenna, served to tune the antenna and earth screens of what were now two parts of a whole antenna, fed at the western transmitter building. The extension also had inductors at the far end, such that each part of the antenna had inductors at its ends.