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La Crosse Technology WT-3102S 10-Inch Atomic Wall Clock

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La Crosse Technology Weather Stations
La Crosse Technology WT-3102S
10-Inch Atomic Wall Clock

The La Crosse Technology WT-3102S 10-Inch Atomic Wall Clock is an analog clock with clean, contemporary styling. It's equally well suited to home and business applications where a larger clock is not needed or would look out of place. We think that this is a particularly handsome clock, perhaps the best-looking 10-inch analog wall clock we have ever carried (except for the black version, which looks equally good).

Click to Enlarge

The La Crosse Technology WT-3102S 10-Inch Atomic Wall Clock has a a semi-metallic silver-tone plastic case. The dial is white, and the hands, hour numbers, and graphic minute/second markers are black. The lens on this clock is flat. The bezel surrounding the dial is black, which contrasts nicely with the silver while complementing the black elements on the dial. The hour numbers are in a slender, modern font that works well with the clock's contemporary styling.

If you're looking for a medium-small atomic clock for indoor use in either a home or business setting whose decor is modern, the WT-3102S is an excellent and economical choice. And who knows? You may actually find a use for it in your garage, shop, mobile home, RV--anywhere you might need an analog wall clock that's conveniently sized, modestly priced, great looking, and totally accurate.

Features:

Accurate to 1 second per million years.
Sets automatically to WWVB radio signal.
Pushbutton selection of all four U.S. mainland time zones.
Automatically adjusts for Daylight Savings Time.
Manual time-set capability for use anywhere outside the WWVB signal range.
Silver-tone case with black bezel, white dial, and black hands, hour numbers, and minute/second markers.
Low battery indication via 2-second steps of second hand.
Powered by one AA (1.5V) alkaline battery, with normal life of over 1 year (battery must be obtained separately).

Dimensions:

Overall Diameter:
10 inches (254 mm)
Dial Diameter:
7.25 inches (184 mm)
Depth:
1.625 inches (41.3 mm)

Radio-Controlled Time:

The NIST (National Institute of Standards and Technology, Time and Frequency Division) maintains a radio station, WWVB, in Ft. Collins, Colorado. The WWVB radio station derives its signal from the NIST atomic clock in Boulder, Colorado. A team of atomic physicists is continually measuring every second of every day, to an accuracy of ten billionths of a second per day. These physicists have created an international standard, measuring a second as 9,192,631,770 vibrations of a Cesium-133 atom in a vacuum.

WWVB (the station’s identification just like any other radio station) continuously broadcasts time and frequency signals at 60 kHz. The carrier frequency provides a stable frequency reference traceable to the national standard. There are no voice announcements on the station, but a time code is synchronized with the 60 kHz carrier and is broadcast continuously at a rate of 1 bit per second using pulse width modulation. The time code contains the year, day of year, hour, minute, second, and flags that indicate the status of Daylight Saving Time, leap years, and leap seconds.

The LaCrosse Technology WT-3102S Analog Atomic Clock:

The La Crosse Technology Radio-Controlled Clock maintains its incredible accuracy by automatically tuning into the WWVB radio signal. The built-in antenna ensures reliable signal reception up to 2000 miles (3200km) from the WWVB transmitter. As a result, the La Crosse Technology clock will calibrate to the atomic clock not only throughout the mainland U.S. but also in much of Canada. You need only insert the battery, press the appropriate time zone button, and wait until the signal is received (overnight). In all other locations worldwide, the La Crosse clock can be manually set and will provide the high degree of accuracy of any quality quartz clock.

In a nutshell, here's how the the La Crosse clock works: The clock's antenna is specifically tuned for optimal reception of the 60 kHz time signal. The time signal received on the antenna is demodulated by an onboard receiver, which sends the information to the clock's CMOS microprocessor for decoding. Once your clock has automatically set its time for the first time, it ensures continuing accuracy by automatically tuning into the WWVB radio signal once per day after midnight. As long as your clock is kept within transmitter range, it will continue to display the absolutely precise time, even automatically adjusting for summer time/winter time changeovers. Should you move your clock out of transmitter range for an extended period of time, the clock will continue to operate as a highly accurate quartz-controlled clock. Upon re-entering the transmitter range, your clock will correct itself again to the precise WWVB time signal.

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Note: This product has "atomic" clock functionality. Atomic, or Radio Controlled clocks receive a radio signal to set themselves. Like any radio receiver however, they may not be able to receive the signal if they are in a building with a lot of steel in the structure, near computers or other electrical equipment that may generate interference, or if the weather is unsuitable. The signal they receive does not propagate well during the day. That's the nature of the signal, not the clock. These clocks are designed to catch the signal when they can, generally in the middle of the night, calibrate themselves, and then run quite accurately for days until they can catch another signal. When you first put in the batteries, they will most likely not set themselves until the middle of the night. That's normal. By morning, weather permitting, it should be correct. Under less than ideal conditions, it could take a few days. Daylight savings time changes may not be made the first night if location and weather are not favorable.

Availability: Exact quantity available will be displayed in the shopping cart, after you click the button below.

Usually ships the next business day. Item number: lacrwt3102s

Regular price: $19.95Sale price: $19.50, 2/$38.00, 5/$90.00, 10/$170.00, 25/$400.00, 50/$750.00, 100/$1,400.00

One AA Alkaline BatteryOne AA Alkaline battery. We typically ship Energizers, in case of availability problems, we may ship Duracells.
bat1aa

$0.80
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