![]() Most of these clocks have internal (but much less precise) timekeeping circuitry to keep themselves going if they lose this signal, but can go several days without his clocks hearing it. Normally, clocks built to synchronize with the WWVB station include a small radio antenna to receive the 60 kHz signal and the 1-bit-per-second data transmission which is then decoded and used to update the time shown on the clock. That’s why, who lives in northern New Hampshire, built this WWVB simulator. In the United States, this is the WWVB station located in Colorado which is generally receivable anywhere in the US but can be hard to hear on the East Coast. ![]() Unfortunately, we can’t all have blocks of cesium in our basements, so various agencies around the world have maintained radio stations which, combined with an on-site atomic clock, send out timekeeping signals over the air. As far as timekeeping goes, there’s nothing more accurate and precise than an atomic clock.
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