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    Re: GPS vs WWV time.
    From: Paul Hirose
    Date: 2001 Sep 03, 6:38 PM

    Yes, there can be an obvious (to the eye) inaccuracy in the time
    displayed on a GPS receiver. My Magellan Trailblazer is sometimes a
    full second off compared to WWV time ticks. I've heard of others being
    several seconds off. After all, the receiver's main job is computing
    position, so updating the time display has low priority.
    There's also the offset between UTC and GPS time to consider. GPS time
    never has leap seconds, so the two time scales have diverged by a few
    seconds by now. However, the offset is encoded in the GPS signal, and
    as far as I know all but the really obsolete receivers make the
    correction. My old Magellan is a '94 model and it keeps up with the
    leap seconds.
    I guess all you can do is repeatedly test your receiver against WWV
    until you get its behavior pinned down. You may want to ask on the
    sci.geo.satellite-nav newsgroup.
    paulhirose@earthlink.net (Paul Hirose)

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