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	Online Encyclopedia and Dictionary - WWVH
		WWVH is the callsign of NIST's shortwave radio time signal station in Kekaha, on the island of Kauai in the state of Hawaii.
		WWVH is the Pacific sister station to WWV, and has a similar broadcast format to WWV.
		WWVH, like WWV, transmits the standard audio frequencies of 500Hz.ogg and 600Hz.ogg in alternating minutes, but when WWV is transmitting 500 Hz, WWVH transmits 600 Hz, and vice versa.
	fact-archive.com /encyclopedia/WWVH (328 words)

	ipedia.com: WWVH Article (Site not responding. Last check: 2007-10-19)
		WWVH is the callsign of NIST 's shortwave radio time signal station in Kekaha, on the island of Kauai in the state of Hawaii.
		WWVH is the Pacific sister station to WWV, and has a similar broadcast for...
		WWVH, like WWV, transmits the standard audio frequencies of and in alternating minutes, but when WWV is transmitting 500 Hz, WWVH transmits 600 Hz, and vice versa.
	www.ipedia.com /wwvh.html (352 words)

	YourArt.com >> Encyclopedia >> WWVH (Site not responding. Last check: 2007-10-19)
		However, the top-of-the-hour tone WWVH transmits is the same frequency as that used by WWV, 1500 Hz.
		WWVH, like WWV, transmits the standard audio frequencies of 500 and 600 Hz in alternating minutes, but when WWV is transmitting 500 Hz, WWVH transmits 600 Hz, and vice versa.
		WWVH also transmits the standard 440 Hz tone each hour except for the first hour of each UTC day, but at 1 minute past instead of 2 minutes past on WWV.
	www.yourart.com /research/encyclopedia.cgi?subject=/WWVH (454 words)

	New Page 1 (Site not responding. Last check: 2007-10-19)
		WWVH transmits on 2500 kHz with 5 kW of power and on 5000, 10000 and 15000 kHz with 10 kW of power.
		After serving the Pacific area for 23 years from the Island of Hawaii, Radio Station WWVH was relocated to the western edge of Maui, the Island of Kauai, Hawaii.
		The antenna system of WWVH in Hawaii is especially designed to minimize radiation back toward the U.S. mainland in order to prevent mutual interference with WWV on the same frequencies.
	home.earthlink.net /~dxchicago/WWVH.htm (1080 words)

	WWVH Antennas
		WWVH transmits time and frequency standard signals from Kauai, Hawaii on 5, 10 and 15 MHz using separate arrays of two half-wave vertical drooping-ground-plane dipoles spaced a quarter-wave-length apart.
		The two dipoles in each array are driven 90 degrees out-of-phase with each other to create a cardiod radiation pattern that has maximum gain toward the west and a deep null toward the east to reduce interference to WWV's transmissions on the same frequencies from Fort Collins, Colorado.
		WWVH also has standby omni-directional vertical radiators connected to standby 2.5, 5, 10, and 15 MHz transmitters that can be used in the event of antenna or transmitter failures.
	www.smeter.net /wwvh/antennas.php (236 words)

	Radio Receiver for WWV (Site not responding. Last check: 2007-10-19)
		The National Bureau of Standards maintains two radio transmitting stations, WWV at Ft. Colonies, Co., and WWVH near Kekaha, Kauai (Hawaii), for broadcasting standard radio frequencies of high accuracy.
		A 500 Hz tone is broadcast during alternate minutes unless voice announcement or silent periods are scheduled.
		A 440 Hz tone is broadcast beginning one after the hour by WWVH and two minutes after the hour by WWV.
	demo1.physics.wisc.edu /MDemos/Writeups/M1rad.htm (237 words)

	NIST Radio Stations WWV and WWVH
		WWVH operates in the high frequency (HF) portion of the radio spectrum and radiates 10,000 W on 5, 10, and 15 MHz, and 5000 W on 2.5 MHz [NOTE: Due to problems with the transmission system, the 10 MHz broadcast has been radiating 5,000 W since 12/05/06.
		The signals broadcast by WWVH use double sideband amplitude modulation.
		The modulation level is 50 percent for the steady tones, 50 percent for the BCD time code, 100 percent for the second pulses and the minute and hour markers, and 75 percent for the voice announcements.
	tf.nist.gov /stations/wwvh.htm (390 words)

	[No title]
		The 2.5 MHz antenna at WWVH and all antennas at WWV are half-wave dipoles that radiate omnidirectional patterns.
		Standard Time Intervals The most frequent sounds hears on WWV and WWVH are the pulses that mark the seconds of each minutes, except for the 29th and 59th seconds pulses which are omitted completely.
		The Omega announcements on WWV and WWVH are given to provide users with immediate notification of such events and other information on the status of the Omega system.
	www.arrl.org /files/bbs/general/wwv.txt (2362 words)

	RASNZ Occultation Section - Timing Occultations
		WWVH broadcasts on frequencies of 2.5, 5.0, 10.0, 15.0 and 20.0 MHz with time pips every second.
		WWVH provides voice announcements of the time before every minute beat, starting at the 45 second mark, while the 59th second beat is omitted and the minute tone is at a higher frequency than the other beats.
		WWVH can be picked up easily in New Zealand, and less well so in parts of Australia, using only a cheap shortwave receiver.
	occsec.wellington.net.nz /timing.htm (1361 words)

	Alerts on WWV and WWVH
		Geophysical alerts are broadcast from WWV at 18 minutes after the hour and from WWVH at 45 minutes after the hour.
		Atlantic highseas warnings are broadcast by WWV at 8 and 9 minutes after the hour, and a Pacific highseas warning is broadcast at 10 minutes after the hour.
		WWVH broadcasts a Pacific highseas warning at 48, 49, 50 and 51 minutes after the hour.
	www.lwca.org /wwv-alerts.htm (1131 words)

	Radio WWV/H Audio Demodulator/Decoder
		The WWVH format is identical, except that the 1000-Hz pulses are sent at 1200 Hz.
		As long as the clock is correctly set or verified, the system clock offsets are provided once each minute to the reference clock interface, where they are processed using the same algorithms as with other reference clocks and remote servers.
		Specifies the propagation delay for WWVH (21:59:26.0N 159:46:00.0W), in seconds and fraction, with default 0.0.
	www.eecis.udel.edu /~mills/ntp/html/drivers/driver36.html (4026 words)

	ARRLWeb: WWV Survey Planned by NIST
		The WWVH 15-MHz phased vertical array on the island of Kauai, Hawaii.
		Lowe confirmed that the data collected ultimately could be used to determine whether WWV and WWVH remain on the air--especially given the popularity of NIST's other outlets, including its Web-based time server that gets in excess of 3 million hits a day.
		WWVH transmits on 2.5, 5, 10 and 15 MHz and uses phased vertical arrays on 5, 10 and 15 MHz.
	www.arrl.org /news/stories/2001/02/20/2/?nc=1 (759 words)

	WWVH
		The broadcasts on 5, 10, and 15 MHz from WWVH are from phased vertical half-wave dipole arrays.
		At both WWV and WWVH, double sideband amplitude modulation is employed with 50 percent modulation on the steady tones, 25 percent for the BCD time code, 100 percent for the seconds pulses, and 75 percent for voice.
		Jane Barbe is the announcer for WWVH, and she is also from Atlanta.
	www.chem.hawaii.edu /uham/wwvh.html (823 words)

	Frequency measurements
		Two primary standard audio-frequency tones (440 Hz and 600 Hz) are broadcast on all WWV and WWVH carrier frequencies.
		Intervals of 1 minute are marked by a 0.8-second, 100-Hz tone for WWV and a 0.8-second, 1,200-Hz tone for WWVH.
		Universal Time Coordinated (UTC) is announced on WWVH between the 45 and 52.5 seconds of each minute and on WWV between the 52.5 and 60 seconds of each minute.
	www.tpub.com /neets/book21/88e.htm (1724 words)

	Welcome to Warren Woods Veterinary Hospital
		Outside of managing the WWVH practice, she loves spending time with her dogs (obedience training and flyball), and with her family.
		She started at WWVH in December 2000 as an associate veterinarian.
		Prior to coming to WWVH, she practiced small animal medicine for over three years at another local veterinarian hospital in Detroit.
	www.wwvhcares.com /vetteam.htm (363 words)

	WWVH Kekaha, Hawaii (Site not responding. Last check: 2007-10-19)
		Both of these storms damaged the WWVH facilities, and the antennas were changed to different designs after each weather event.
		Oddly, the official WWVH web site shows antennas from before 1992, which were destroyed by Iniki, and were replaced soon after the fall of 1992.
		In addition, since the fall of 2001, the WWVH facility has been off-limits to the general pulic, due to it's location on the base of the Pacific Missle Range Facility (PMRF) at Barking Sands.
	www.well.com /user/dmsml/wwvh (369 words)

	HF (SW) Radio - Time NZ & A
		Mostly, WWVH is received at the best signal strength, with WWV faintly in the background, but at times WWV is almost as good.
		On WWVH and WWV the seconds pulses are heard every second except on the 29th and 59th seconds of each minute.
		Because the signals from WWVH and WWV are often weak, there is a likelihood of interference from other standard time stations on the same international frequencies of 5, 10 and 15 MHz.
	tufi.alphalink.com.au /time/time_hf.html (1380 words)

	PSTI/Traconex 1020 WWV/WWVH Receiver (Site not responding. Last check: 2007-10-19)
		It is very important that the year be set correctly in the DIP-switches; otherwise, the day of year will be incorrect after 28 April of a normal or leap year.
		The propagation delay DIP-switches should be set according to the distance from the transmitter for both WWV and WWVH, as described in the instructions.
		While the delay can be set only to within 11 ms, the fudge time1 parameter can be used for vernier corrections.
	tycho.usno.navy.mil /NTP/Version4/driver3.htm (229 words)

	Other Sources of Information
		For more up-to-date information on the propagational conditions, you can listen to radio stations WWV and WWVH, which are the two time- and frequency-standard stations for the United States.
		WWV and WWVH are set to an atomic clock that ensures that they are exactly on time.
		WWV (from Ft. Collins, Colorado) and WWVH (from Kauai, Hawaii) both broadcast on 2500, 5000, 10000, and 15000 kHz.
	www.sgcworld.com /othersources.html (572 words)

	WWV Information
		These carrier frequencies, as well as the time signals, are derived from a set of atomic clocks located at the transmitter site, which themselves are traceable to NIST's primary frequency standard in Boulder, Colorado using such techniques as GPS common-view observations.
		WWV is partnered with radio station WWVH, located in Hawaii.
		Onsite with WWV in Fort Collins is also radio station WWVB, which operates on the low frequency of 60 kHz.
	www.bookrags.com /wiki/WWV (846 words)

	WWV, WWVH HF VOICE (TIME TICK)
		WWVH in Kauai, Hawaii., commonly known to mariners as the "Time Tick", used as an aid in celestial navigation.
		Included in these are hourly voice broadcasts of current highseas storm warnings for the Atlantic, Pacific and Gulf of Mexico provided by the National Weather Service.
		Discrimination between the two stations may be accomplished as WWV uses a male announcer for announcement of time, while WWVH uses a female announcer.
	www.nws.noaa.gov /om/marine/wwv.htm (184 words)

	TVTechnology - Technology Corner
		Both WWV and WWVH broadcast on 2.5, 5, 10 and 15 MHz, and WWV additionally broadcasts on 20 MHz.
		Shortwave reception conditions vary greatly depending on the time of day, time of year, carrier frequency, etc., so multiple frequencies are used to transmit the same information, assuring that there is a good chance to receive the signals on at least one frequency at any given time or place.
		Like WWVB, WWV and WWVH transmit Coordinated Universal Time (UTC), which is a 24-hour version of what we used to know as Greenwich Mean Time.
	www.tvtechnology.com /features/Tech-Corner/f-RH-Time.shtml (1365 words)

	Computer Assisted Radio Monitoring
		On various Internet websites you will read—and during the hourly space weather and geophysical reports broadcast by the National Oceanic and Atmospheric Administration (NOAA) you will hear—terms and measurements that describe the various conditions and levels of solar activity and so on.
		For instance, NOAA uses the WWV and WWVH radio stations to issue geophysical alert messages that provide information about solar terrestrial conditions.
		WWVH radiates 10,000 watts on 5, 10, and 15 MHz, and 5,000 watts on 2.5 MHz.
	www.popular-communications.com /27PropagationFeb05.html (446 words)

	US Spectrum Requirements: Projections and Trends - Chapter 6
		Radio stations WWV, WWVH, and other similar services serve users numbering well into the tens of thousands and provide the main access to time signals accurate to about 1 millisecond and frequency references accurate to about 1 x 10-7.
		HF standard frequency signals transmitted by WWV and WWVH are used by many communicators, including amateur radio operators.
		The HF and LF services, such as WWV, WWVH, and WWVB, continue to fill important user needs for accuracies that are adequate for most applications.
	www.ntia.doc.gov /openness/sp_rqmnts/other6.html (3717 words)

	Coordinated Universal Time (UTC)
		If you are several thousand miles from a shortwave time station, the amount of the delay and its variability can make the signals useless for critical timing applications.
		For most users in the U.S. the received accuracy of time signals from WWV and WWVH should be better than 1/100 of a second.
		WWV and WWVH are usually audible up to 2,000 miles away using relatively simple equipment.
	www.spacearchive.info /utc.htm (1363 words)

	wwcr.com: What Time Is It?
		Another way is to tune into the National Bureau of Standards stations WWV (in Colorado) or WWVH (in Hawaii).
		If you are not in the reception area of WWV or WWVH you will hear other time-and-frequency standard stations broadcasting from other countries around the world.
		Some of these stations can be heard in North America at certain times of the year and day due to propagation conditions.
	www.wwcr.com /wwcr_faq/what_time_is_it.html (561 words)

	Services-Physics
		A sister station, WWVH on Kauai, Hawaii, was established in 1948.
		Broadcasts include standard frequencies and time intervals, time of day (both voice and digital code), astronomical time corrections, and public service announcements (marine weather, geophysical alerts, Omega and GPS status information, and radio propagation information).
		These broadcasts provide more predictable propagation than that of either WWV or WWVH, but the data rate is so low that only a slow digital time code can be broadcast.
	www.nist.gov /public_affairs/guide/services_physics.htm (444 words)

	NIST Time Calibration
		A sister station, WWVH, was established in 1948 in Hawaii, and its signal can be heard by dialing (808) 335-4363 in Hawaii.
		The telephone services provide time signals accurate to 30 milliseconds or better, which is the maximum delay in cross-country telephone lines.
		The broadcast power for WWVB was increased in 1999 from about 10 kilowatts to 50 kilowatts, providing much improved signal strength and coverage to most of the North American continent.
	physics.nist.gov /GenInt/Time/boulder.html (438 words)

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