Welcome to the NavList Message Boards.

NavList:

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

Compose Your Message

Message:αβγ
Message:abc
Add Images & Files
    or...
       
    Reply
    Re: How likely is a GPS shutdown?
    From: Rodney Myrvaagnes
    Date: 2000 Jan 25, 10:38 EST

    This is not quite right, although the rest of RBE's post is
    right on. The military receivers that can get the encrypted
    (long) word get it over another carrier than that used by
    the C/A word decoded by civil receivers. There is no way
    for your Walmart gps to use the military code.
    During the Gulf War, SA was turned off because the military
    had to use civilian receivers. SA was an afterthought,
    applied because the civil receivers turned out to work much
    better than expected.
    On Mon, 24 Jan 2000 19:09:42 -0500, Richard B. Emerson
    wrote:
    > >
    > > I suspect that the military has its own encrypted version
    > > of GPS although this is simply a guess on my part.
    >
    >One of the absurdities of GPS is that during Desert Storm and Panama,
    >GPS' selective availability was turned off.  Thus, for a short period,
    >the normally encrypted data segment (it's already there and used
    >routinely) was available unencrypted.  Consider, too, the error even
    >with S/A enabled.  A fuel-air bomb (or ammonium nitrate bomb) could
    Rodney Myrvaagnes                   J36 Gjoa
    Senior Editor           Electronic Products
    My oyster knife is Y2K compliant
    

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Join NavList

    Name:
    (please, no nicknames or handles)
    Email:
    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:

    Email Settings

    Posting Code:

    Custom Index

    Subject:
    Author:
    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