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
    Re: Lightning strike (was Re: CELNAV .pdf file)
    From: Brooke Clarke
    Date: 2003 Dec 29, 14:23 -0800
    Hi Frank:

    Equipment that's connected to a power source, either the AC mains or a DC supply and an antenna is very susceptible to EMP destruction.
    To prevent EMP all  you need to do is disconnect all external wiring connections, like power, antenna, computer cables, etc. and then store the equipment in a conducting, Faraday cage (not antistatic) like Aluminum foil.

    Have Fun,

    Brooke Clarke, N6GCE

    Frank Reed wrote:
    Fred Hebard wrote:
    "Electromagnetic shock can still knock out most electronic devices, as I
    understand it.  Celestial is a good backup."

    Maybe someone on this list will know the answer to a question that has come up occasionally. Is there a "lightning-proof safe"? If you're sailing across the Atlantic, and your boat is struck by lightning, you may lose all your electronics. Can you keep a spare handheld GPS in an insulated metal case? Do they market such things? More generally, what's a safer navigation backup: a sextant, almanac, and set of sight reduction tables, or two or three (appropriately secured) spare GPS receivers?

    Frank E. Reed
    [X] Mystic, Connecticut
    [ ] Chicago, Illinois
    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