by themasterevan on June 23rd, 2005

themasterevan

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Where can I find plans for a device to block all cell phone reception within a small local area, such as a movie theater?

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Answers. 2 helpful answers below.

  • by jenniferprofitt on June 24th, 2005

    jenniferprofitt

    For information, visit www.ambitcorp.com

    http://www.ambitcorp.com/html/antenna_distribution.html

    AMBIT Corporation's Antenna Distribution technology is uniquely
    designed to conduct wireless signals from place to place in
    RF-sensitive environments where control of radio frequency energy is
    required. Their ability to collect and route cellular and other personal
    communications device signals within a closed environment allows safe
    and regulated control in RF sensitive settings such as commercial
    aircraft, hospitals and in buildings. Some features:

    I found many references to a paneling material developed in Japan, but
    can find no sources to buy it:

    http://www.chicagotribune.com/technology/local/profiles/chi-0207220010jul22,0,3510198.story

    Japanese researchers are developing wood paneling infused with
    magnetic metal to prevent cell phones from ringing in movie theaters,
    concert halls, restaurants or other venues where they annoy patrons.
    The goal of Hideo Oka and a team of engineers at Japan's Iwate
    University is to find a blocking method that is inexpensive and easily
    installed.

    They have experimented with four ways to combine wood and magnetic
    metal particles to produce paneling that absorbs radio signals. Their
    aim is to create a process using recycled metal and wood materials so
    that the paneling could be sold cheaply at hardware stores.

    Here is what sounds like a good inexpensive method to block cell phone
    signals from a room or building:

    http://www.beckjord.com/nocellphoneshere/

    HOW TO LEGALLY BLOCK CELL PHONES IN USA

    Simple - mount steel mesh or chicken wire around all your walls,
    cover them with decorative wall board, and run a wire down to a good
    electrical ground, such as conduit pipe or water pipe. This will
    effectively block incoming or outgoing cell phone transmissions. After
    all, it is YOUR office or store, right? People can go outside to
    make calls, as they should.

    I wanted to confirm that this would actually work and found this:

    http://slashdot.org/articles/04/02/15/1444236.shtml

    When you build or do any extensive renovation you are probably going
    to use a lot of drywall. If you do install a few layers of chicken
    fence or other suitable fine grid or wire. Make sure the doors are
    metal (fire code I would think) and that they maintain a good contact
    to the grid etc etc etc. When the doors are closed you are not going
    to see an increadable ammount of attenuation to any RF signals with a
    wavelength longer than the mesh pitch and a good attenuation to most
    everything else.

    http://answers.google.com/answers/threadview?id=413500

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  • by Anonymous on May 4th, 2006

    Anonymous

    I know this does not answer your question, but why not just turn your cell phone off? it would solve your problem.

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