Welcome to the NavList Message Boards.


A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Add Images & Files
    GPS shortcomings.
    From: George Huxtable
    Date: 2005 Jun 8, 12:02 +0100

    I know that references to GPS are discouraged, if not forbidden, on this
    list. But I wonder if a note about GPS shortcomings would be more
    I've just received a leaflet from the British Lighthouse authorities,
    pushing for use of the new Loran-C transmitter at Rugby, England.
    In which is the statement-
    "GNSS systems themselves also suffer occasionally from undetected failures;
    for example, a satellite clock error on 1 January 2004 gave rise to errors
    in measured positions of up to 45 kilometres in Western Europe for a period
    of some 3 hours, resulting in onboard navigational failures."
    I hadn't heard about that event, which sounds rather serious. Is it common
    knowledge? Can anyone offer further details?
    It wouldn't have affected me. I would have been by the fireside on that day.
    contact George Huxtable by email at george@huxtable.u-net.com, by phone at
    01865 820222 (from outside UK, +44 1865 820222), or by mail at 1 Sandy
    Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK.

    Browse Files

    Drop Files


    What is NavList?

    Join NavList

    (please, no nicknames or handles)
    Do you want to receive all group messages by email?
    Yes No

    You can also join by posting. Your first on-topic post automatically makes you a member.

    Posting Code

    Enter the email address associated with your NavList messages. Your posting code will be emailed to you immediately.

    Email Settings

    Posting Code:

    Custom Index

    Start date: (yyyymm dd)
    End date: (yyyymm dd)

    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site