Problem with atomic clock updating


Popular radio-controlled timekeepers, which range from wristwatches to wall clocks, are not really atomic clocks -- though that's often in their name -- but they do set themselves by listening to low-frequency AM time broadcasts from the NIST radio station WWVB in Fort Collins, Colo.

Those broadcasts are synchronized to the NIST atomic clock ensemble in nearby Boulder, Colo.

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NIST is changing the way it broadcasts time signals that synchronize radio-controlled "atomic" clocks and watches to official US time in ways that will enable new radio-controlled timepieces to be significantly more robust and reliable.All parts of the display are large enough to read across the room.It is also readable from many angles which is a huge bonus as that meant we could pick a centralized mounting location. I have a Acurite wireless unit for my greenhouse and a pro level La Crosse one attached to my PC.Both the clock and outside sensor use 2 AA batteries.This was of importance to me as we use rechargeable batteries and look for equipment which doesn't use an odd battery.However, sometimes the radio-controlled clocks have difficulty accurately picking up the WWVB time signal because of the clock's location, local radio interference, effects of buildings, and other problems.

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