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: A DIY Faraday cage: caveats and hints?
    From: Brad Morris
    Date: 2019 Jan 22, 17:47 -0500

    You have the general idea well understood.  We must shield, via metal box, then insulate the payload.  If, as you describe, add another shield and insulator, you are adding a layer of protection.  

    There are no guarantees.  There will always be a lightning strike that generates enough RF to overcome our efforts.  

    Yet the shielding does do two things.  It provides some shield for electronics that would otherwise be damaged if there was no shield.  It provides a level of peace of mind, knowing you did take precautions.  

    Hopefully, you look back and state, "what a waste of time, we never even came close to lightning.  All that preparation for nothing."


    On Tue, Jan 22, 2019, 5:32 PM Tony Oz <NoReply_TonyOz@fer3.com wrote:

    Dear Brad,

    I'm myself an engineer in electronics. Though RF is not my immediate field - as an "audiophile"/HiEndAudio enthusiast I know thing or two about EMI. :)

    So, to not get unreasonable|ridiculous with this project, I gather that suffices a tin-box with an improved electric contact of lid, a layer of polyfoam as an inside insulator, and then - a smaller tin-box where the actual "payload" is kept wrapped in plastic (as further insulator and moisture protection).

    Hope this would lessen the possible damage to my back-up equipment.



    60°N 30°E

    View and reply to this message

    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