
	Where results make sense

Topic: WWVB

Related Topics

YVTO

Radio clock

JJY

Chu

VNG

DCF77

WWV

RWM

MSF time signal

WWVH

Atomic clock

Fort Collins, Colorado

Red Bud, Illinois

King James Bible

Mount Dora, Florida

In the News (Fri 27 Nov 09)

Northern Trust

Marvin Harrison

Peter Chernin

Gary Locke

Match Play

Penelope Cruz

Mickey Rourke

AR Rahman

Danny Boyle

Hugh Jackman

	NIST Radio Station WWVB
		WWVB identifies itself by advancing its carrier phase 45° at 10 minutes after the hour and returning to normal phase at 15 minutes after the hour.
		WWVB uses two identical antennas that were originally constructed in 1962, and refurbished in 1999.
		The north antenna was originally built for the WWVL 20 kHz broadcast (discontinued in 1972), and the south antenna was built for the WWVB 60 kHz broadcast.
	tf.nist.gov /stations/wwvb.htm (953 words)

	WWVB - Biocrawler (Site not responding. Last check: )
		WWVB is the station that radio-controlled clocks throughout North America use to synchronize themselves.
		WWVB also has a method of station identification, which it transmits by a 45° shift in the phase of its carrier wave at ten minutes past the hour, and a -45° shift five minutes later.
		Since WWVB's longwave signal tends to propagate better along the ground, it requires a shorter and less turbulent path to get to the radio receivers than WWV's shortwave signal, which is strongest when it bounces between the ionosphere and the ground.
	www.biocrawler.com /encyclopedia/WWVB (620 words)

	US Time Signal WWVB
		WWVB Coverage Area - This information is from the NIST website.
		As a compromise, some of the missing length was added horizontally to the top hats of this vertical dipole, and the down lead of each antenna is terminated at its own helix house under the top hats.
		The frequency uncertainty of the WWVB signal as transmitted is less than 1 part in 1012.
	www.ntp-time-server.com /wwvb/wwvb.htm (990 words)

	WWVB Time Interface
		The clock uses WWVB for its time information and I thought I would buy one to see if it could be used for time keeping with my SDR data logging program.
		It turns out that the people at NIST, who send out the WWVB signal, increased the power of their transmitter from a whopping 10KW to around 20KW (they will be increasing it to 40KW in a few months) on DEC. 19th 1997.
		WWVB sends out two back to back framing pulses, one second before the top of the minute, and another one at the top of the minute.
	webtronics.com /wwvbsdr.html (1125 words)

	WWVB Time Interface
		The clock uses WWVB for its time information and I thought I would buy one to see if it could be used for time keeping with my SDR data logging program.
		It turns out that the people at NIST, who send out the WWVB signal, increased the power of their transmitter from a whopping 10KW to around 20KW (they will be increasing it to 40KW in a few months) on DEC. 19th 1997.
		WWVB sends out two back to back framing pulses, one second before the top of the minute, and another one at the top of the minute.
	psn.quake.net /wwvbsdr.html (1125 words)

	Information about WWVB Radio Controlled Clocks
		WWVB broadcasts on a frequency of 60 kHz.
		WWVB radio controlled clocks should be able to work in most places in North America.
		Most WWVB radio controlled clocks work great, as evidenced by the hundreds of thousands of units that have been sold throughout the United States.
	tf.nist.gov /stations/radioclocks.htm (2261 words)

	Build a WWVB Radio Controlled Nixie Clock
		A common example of the Radio Clock movement is designed and manufactured by Quartex Inc, and rebranded for their distributor: Atomix.
		I used much of the logic portion of Mike's clock circuit as a Nixie clock example for the WWVB receiver hack.
		Overall clock error is less than 100ms from the WWVB clock transmission.
	www.amug.org /~jthomas/wwvb.html (1550 words)

	Decoding WWVB from a Sony atomic time radio controlled clock
		WWVB radio clocks made in the 1990's tended to use an external antenna while more recent units, made since 2000, tend to use a more sensitive internal antenna [2].
		I find that for WWVB hobby use the clocks with external antennas are more convenient since the antenna module can be removed for stand-alone use.
		WWVB radio clocks are regular quartz clocks with a special 60 kHz very long wave (VLF) "radio" capable of receiving the time code signal from radio station WWVB in Ft. Collins, Colorado.
	www.leapsecond.com /pages/sony-wwvb (1292 words)

	ipedia.com: WWVB Article (Site not responding. Last check: )
		WWVB is the station that radio-controlled clocks throughout North America use to synchronize themselves.
		The signal transmitted from WWVB is a continuous 60 kHz carrier wave, derived from a set of atomic clocks located at the transmitter site.
		Since WWVB's longwave signal tends to propagate better along the ground, it requires a shorter and less turbulent path to get to the radio receivers than WWV's shortwave signal, which is strongest when it bounces between the ionosphere and the ground.
	www.ipedia.com /wwvb.html (396 words)

	WWVB - Meinberg Funkuhren
		WWVB is a NIST time signal radio station co-located with WWV in Fort Collins, Colorado.
		Radio clocks in North America can use WWVB to synchronize their time.
		WWVB transmitts a continuous 60 kHz carrier wave, derived from a set of atomic clocks located at the transmitter site.
	www.meinberg.de /english/glossary/wwvb.htm (87 words)

	LaCrosse Technology Atomic Clocks WS8117U-C Cherry Finish Atomic Digital Wall Clock with Wireless Indoor Outdoor ...
		The WWVB radio station derives its signal from the NIST atomic clock in Boulder, Colorado.
		WWVB (the station’s identification just like any other radio station) continuously broadcasts time and frequency signals at 60 kHz.
		In locations outside of WWVB range, the La Crosse clock can be manually set and will provide the high degree of accuracy of any quality quartz clock.
	www.lacrosse-htawi.com /lacrws8117uc.html (1207 words)

	WWVB Antenna System - Model 8219 to receive time and frequency signal from NIST - Spectracom Corp.
		The Spectracom WWVB Antenna System is designed for Spectracom WWVB receiver-based synchronization products to receive the 60 kHz time and frequency signal from the National Institute of Standards and Technology (NIST) located in Fort Collins, Colorado.
		Because the WWVB Loop Antenna is a passive antenna, the Preamplifier is required in most instalations to boost the WWVB signal to a useable level.
		When mounted outdoors it receives the WWVB signal and sends the signal to the WWVB Antenna Preamplifier, Model 8207 that is inserted in the antenna feed.
	www.spectracomcorp.com /Home/Products/Antennas/8219WWVBAntennaSystem/tabid/152/Default.aspx (590 words)

	WWVB Time Interface
		With the scope I found that +VE had the + battery voltage (two AAA batteries power the unit for a voltage of around 3 volts) on it.
		And the DCF signal had some sort of "digital" signal on it when PON was at GND.
		Since I didn't know what the format of WWVB was, I did know that it was transmitted at the low freq.
	www.geoseismic.com /wwvbsdr.html (1125 words)

	JJY and WWWB in MSF gaps on 60 kHz
		The British time signal MSF on 60 kHz switches its carrier from 15kW completely to zero for 500ms at the beginning of each minute, and for 100 to 300ms at the beginning of each second, depending on the clock data.
		WWVB reduces its carrier by 10dB (50kW to 5kW), also at the beginning of the second for 800, 500 or 200ms.
		Hints of the WWVB identifier (45-deg advance at minutes 10 to 15) were sometimes found, but it could not be seen reliably.
	members.aol.com /DF6NM/MSFgaps.htm (835 words)

	WWVB Radio Control Clock at AhoyCaptain.com - Always your best source. (Site not responding. Last check: )
		This atomic clock regulates the WWVB radio transmitter located in Fort Collins, Colorado, where the exact time signal is continuously broadcast throughout the United States at 60 kHz to take advantage of stable longwave radio paths found in that frequency range.
		Radio waves at these low frequencies use the earth and the ionosphere as a wave-guide and follow the curvature of the earth for long distances.
		The built-in antenna system will receive the WWVB signal anywhere in North America where long-wave reception is undisturbed.
	www.ahoycaptain.com /shop/weemsplath_552000_clock.html (261 words)

	POWER DOUBLING FOR WWVB COULD HELP KEEP YOU ON TIME IN 1998
		Time and Frequency Division, has doubled its broadcasting power to 23 kilowatts, increasing the range of the extremely accurate time signal that can be used to automatically set the correct time in clocks, watches, VCRs, cars and electronic gear of all kinds.
		WWVB transmits its time signal on a frequency of 60 kilohertz from a site near Fort Collins, Colo. It is not audible and requires special receivers to decode.
		As part of the upgrade, the old WWVB antennas were thoroughly reconditioned, including the replacement of old insulators, worn transmission lines and aged tuning coils.
	www.nist.gov /public_affairs/releases/n98-01.htm (387 words)

	WWVB Time Correction Option (Site not responding. Last check: )
		The output of the WWVB receiver should be connected to pin 32 (Digital IN 0) on the 37 pin A/D I/O connector.
		If you are in the debug mode, you should see a message saying that SDR has lock to the WWVB time.
		When SDR locks to the WWVB time, you will see "(L)" next to the UTC time display at the bottom of the screen.
	psn.quake.net /sdrdocs/wwvb.htm (241 words)

	NCSIDO - WWVB On-Air Test (Site not responding. Last check: )
		This observatory was originally located just a few miles from the radio station WWVB which continuously broadcasts time and frequency signals at 60.0kHz.
		The WWVB transmitter was used as a early test of the antenna, preamplifier, and transmission line system.
		The ASK signal from WWVB, mentioned above, can be clearly seen as the rectangular waveform whose level is switched between two different amplitudes on a sub-second time scale.
	www.xtrsystems.com /vlf/wwvb_test (598 words)

	VLF Receiver (Site not responding. Last check: )
		WWVB transmits on 60 kHz and can be picked up almost anywhere in the USA with a suitably designed loop of ferrite loopstick antenna.
		WWVB has a simple BCD encoded time signal using very slow AM modulation.
		WWVB now beams in :), I finally have plenty of signal to decode WWVB time for most of the day.
	www.geocities.com /hagtronics/vlf.html (278 words)

	Ramsey Electronics (Site not responding. Last check: )
		The 50 kW signal from NIST Radio Station WWVB located in Fort Collins, Colorado is the synchronization source for a growing market of clock and wristwatches.
		Locate the clock at least 1 or 2 meters away from any computer monitors, which can cause interference (some monitors have a scan frequency at or near the WWVB carrier frequency of 60 kHz).
		If you are in a strong interference area, or in a highly shielded location you might not be able to receive the 60 kHz signal from WWVB.
	www.ramseyelectronics.com /support?page=faqs&pagenum=3 (506 words)

	Amatuer & Ham Radio Enthusiasts- Old Ham Radios WWVB decoder circuit (Site not responding. Last check: )
		If you would like to discuss any of the issues raised in this discussion, with hundreds of other Amatuer and Ham Radio enthusiasts from around the world, please feel free to visit the discussion forums and post a message.
		are set 6 times in a 24hr perod by the WWVB signal.
		Your preference for what goes into the aquarium and your budget is what will make the decision easier.
	www.radio-today.net /archives/old-ham-radios/old-ham-radios-p-2589.htm (740 words)

	WWVB Time Correction Option (Site not responding. Last check: )
		The output of the WWVB receiver should be connected to pin 32 (Digital IN 0) on the 37 pin A/D I/O connector.
		If you are in the debug mode, you should see a message saying that SDR has lock to the WWVB time.
		When SDR locks to the WWVB time, you will see "(L)" next to the UTC time display at the bottom of the screen.
	www.seismicnet.com /sdrdocs/wwvb.htm (241 words)

	[No title]
		Thomas OZ2CPU is working on the wwvb decoder software and needed a nice recording of the live 60 kHz signal (he is in Denmark it's hard to get a WWVB reception there:) This turned out to be an insteresting small project.
		I initially recorded the sound by using a two-input nand gate and the WWVB receiver inside the house.
		I fed a 1 kHz signal to one input and the output of the tco pin of the temic receiver to another input.
	polaris.umuc.edu /~vgokoyev/wwvb.html (1020 words)

	Radio Controlled Analog Clock
		This atomic clock regulates the WWVB radio transmitter located in Fort Collins, Colorado, where the exact time signal is continuously broadcast throughout the United States at 60 kHz to take advantage of stable long wave radio paths found in that frequency range.
		Within five minutes the clock will either receive the WWVB signal and set itself to the exact time, or it will determine that the signal is not receivable at its current location and time of day.
		It is not possible, however, for WWVB to penetrate most indoor shopping malls and rooms in the center of large office buildings that do not have windows.
	www.theclockdepot.com /radio_controlled_clocks_information.html (1590 words)

	How Do Atomic Clocks Work, Atomic Clocks, Atomic Digital Clock, Atomic Clock, Atomic Radio Controlled Clock
		WWVB uses a high transmitter power (50,000 watts), an extremely efficient antenna, and broadcasts on a low frequency of 60 kHz.
		The atomic clock time code bits are generated at WWVB by raising and lowering the power of the 60 kHz signal.
		Consequently, when the atomic radio controlled clock has decoded the WWVB atomic digital clock signal, it will first apply a time zone correction based on the time zone the atomic clock is set to, and then synchronize itself to the information received from WWVB.
	www.weathershack.com /education/how-do-atomic-clocks-work.html (845 words)

Try your search on: Qwika (all wikis)