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Overall
diameter of the 50314 Balmoral atomic clock is 18 inches (457 mm), and its
face is about 13.5 inches (343 mm) in diameter. The big, bold hour
numerals are over 1.6 inches (40.6 mm) tall for easy viewing from
a distance. The analog thermometer reads from -42°
to +122°F.
The round dial of the thermometer is about 3.6 inches (91.4 mm) in
diameter, and the thermometer pointer is red. The clock's lens is glass for easy cleaning
without scratching and is tightly sealed with a rubber gasket to
protect the face and hands from moisture. The clock movement is
also in a sealed compartment for protection. The
clock's quartz movement is a patented U.S. design. Its integral
radio receiver detects the WWVB time signal from Colorado, and its microchip
adjusts the hands to display the exact time. With only two
controls--a pushbutton and a wheel that manually moves the
clock's hands--setup is really easy. And the clock can
optionally provide an audible indication of radio signal
strength to help you find a location with good radio reception. This
clock displays the precise time in any location where the
WWVB radio signal can be received. This includes the continental
U.S. (the "lower 48") plus parts of Canada and Mexico.
Daylight Saving Time adjustment takes
place automatically in the spring and fall, but if you live in
Indiana or Arizona, you can disable DST. You do this by holding
the pushbutton depressed as you insert the battery and then
releasing it after the battery is fully inserted. You then
perform the normal setup steps as described in the instructions. Also, if you want to
set your clock, say, 5 minutes fast, you can do this manually
after the clock synchronizes to the WWVB signal. Just set the
time ahead by 5 minutes by using the wheel, and the clock
will maintain the 5-minute difference indefinitely
(or until you reset it). If
you move to a different continental U.S. time zone, you can
adjust for it simply by using the wheel to adjust the time by
the appropriate number of hours--the minute and
second hands will automatically adjust themselves as necessary when the clock
again receives the WWVB radio signal. Or, if you take the clock out of WWVB range,
you can reset it for local time and it will continue to
operate as a highly accurate quartz clock--but without the WWVB automatic
time calibration. You do this by removing and reinserting the
battery and using the wheel only--not the pushbutton--to set the
time. The
50314 Balmoral atomic wall clock is powered by a single AA (1.5 volt) alkaline battery,
which normally lasts up to 2 years. For this
clock, it is important to always use an alkaline AA battery, not a
carbon-zinc, lithium, or rechargeable battery. Note
1:
Although the following is not included in this clock's instructions, we
thought we should mention it anyway because it is included in the
instructions for similar clocks intended primarily for outdoor use.
Please be aware that when the temperature is expected to fall
below freezing, the clock should be brought indoors. This is because in
low temperatures, the alkaline battery may not provide enough current to
power the clock motor, in which case the clock will lose its accuracy.
(Alkaline batteries lose power in sub-freezing temperatures.)
Note 2: The 60kHz AM radio signal used by NIST to deliver the time information carries
best at night. The signal may be interfered with by weather conditions and local
interference. Building construction and location within the building can also
affect reception. This clock is quartz controlled and will keep very good time
for days when reception is poor, so this isn't normally a problem. You may find,
however, that when you first insert the batteries, or during a Daylight Saving
Time change, the clock will not be able to set itself immediately if reception
is poor. Signal strength is indicated by the icon above seconds in the time
display. You may wish to check the icon when selecting a location for your
clock. Because wiring and plumbing in your walls can affect reception, moving
the clock as little as a couple of inches can make a difference in the strength
of the signal reaching the clock. For additional information, please see the Chaney
Instrument Clock FAQ.
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