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When the clock reaches the halfway point ("half-tide"), it then counts the hours up to high tide or low tide, as in "one hour until high or low tide". Generally, there is an adjustment knob on the back on the instrument which may be used to set the tide using official tide tables for a specific location at either high or low tide.
Tropospheric ducting is a type of radio propagation that tends to happen during periods of stable, anticyclonic weather. In this propagation method, when the signal encounters a rise in temperature in the atmosphere instead of the normal decrease (known as a temperature inversion), the higher refractive index of the atmosphere there will cause the signal to be bent.
The gulf as a whole is known as the Gulf of Mexico, ultimately deriving from Mexica, the Nahuatl term for the Aztecs. French Jesuits called the gulf the Gulf of Mexico (Golphe du Mexique) as early as 1672. [10] [11] Until 1836, the coastal boundary of Mexico extended eastward along the gulf to what now is the state of Louisiana.
A gyre over Central America and southern Mexico is common this time of the year and can contribute to tropical storm or hurricane formation over the Caribbean Sea, Gulf of Mexico and the eastern ...
According to the NTIA, the Coast Guard is the seventh-biggest user of radio spectrum in the United States. The U.S. Coast Guard maintains a network of VHF radio stations at its shore stations and on cutters and boats, as well as stations of the U.S. Coast Guard Auxiliary.
Rafael was moving west across the Gulf of Mexico on Friday morning as the first major hurricane in the Gulf in November for almost 40 years, bringing the threat of life-threatening conditions to ...
HF radio and antenna (plus software if automatic updating of computer time is desired) TrueTime TL-3 WWV Receiver; ntpd with Radio WWV Audio Demodulator/Decoder (driver can tune ICOM HF radios via C-IV) COAA's Radio Clock [21] F6CTE's CLOCK [15] WWVH: 5, 10, and 15 MHz AM Voice with modified IRIG-Hformat time code on 100 Hz sub-carrier (CCIR code)
Hurricane Rafael made landfall in Cuba as a Category 3 storm at 4:15 p.m. ET Wednesday in the Cuban province of Artemisa, just east of Playa Majana, with maximum sustained winds estimated to be ...