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Thread: wifi spectrum analyzer

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    7ELEVEN
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    Default wifi spectrum analyzer

    is it possible to use a usb or any other wifi device as a 2.4Ghz spectrum analyzer?

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    Just guessing, but a 2.4ghz reciver chip from a wireless adpator, and you read the voltage difference from the output(before it went into a digtal modulator,if not inbuilt) would give you some type of frequency modulation

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    Quote Originally Posted by 7ELEVEN View Post
    is it possible to use a usb or any other wifi device as a 2.4Ghz spectrum analyzer?
    Google "WiSpy" (www.metageek.net)
    "\x74\x68\x65\x70\x72\x65\x7a\x39\x38";

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    My life is this forum Barry's Avatar
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    Quote Originally Posted by theprez98 View Post
    Google "WiSpy" (www.metageek.net)
    Which is probably the best wifi spectrum analyzer under $1000 outside of fleabay.
    Of course, if you really wanted to have some fun, go to Wal-Mart late at night and ask the greeter if they could help you find trashbags, roll of carpet, rope, quicklime, clorox and a shovel. See if they give you any strange looks. --Streaker69

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    Quote Originally Posted by 7ELEVEN View Post
    is it possible to use a usb or any other wifi device as a 2.4Ghz spectrum analyzer?
    The Wi-Spy device is provided as a custom firmware device coupled with their own propitiatory software suite.

    If you mean can you use an existing "normal" wifi device and put it to use as a spectrum analyzer, then yes that's possible too - given that it's a supported device matched to the corresponding software.
    i.e. Use an your own Netgear or Cisco card with Airmagnet, etc.

    The difference here is that you can use a pre-existing device with your chosen software, as opposed to software locked to a supplied device.

    Although, as stated, Wi-Spy is probably one of the best value for money solutions.

    Also, look at Yellow Jacket is money is no object!

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    My life is this forum Barry's Avatar
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    Quote Originally Posted by Re@lity View Post
    The Wi-Spy device is provided as a custom firmware device coupled with their own propitiatory software suite.

    If you mean can you use an existing "normal" wifi device and put it to use as a spectrum analyzer, then yes that's possible too - given that it's a supported device matched to the corresponding software.
    i.e. Use an your own Netgear or Cisco card with Airmagnet, etc.

    The difference here is that you can use a pre-existing device with your chosen software, as opposed to software locked to a supplied device.

    Although, as stated, Wi-Spy is probably one of the best value for money solutions.

    Also, look at Yellow Jacket is money is no object!
    I've never seen any wifi card pretend to be a spectrum analyzer. Dragorn's wispy software is open source I believe.
    Of course, if you really wanted to have some fun, go to Wal-Mart late at night and ask the greeter if they could help you find trashbags, roll of carpet, rope, quicklime, clorox and a shovel. See if they give you any strange looks. --Streaker69

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    Quote Originally Posted by Barry View Post
    I've never seen any wifi card pretend to be a spectrum analyzer. Dragorn's wispy software is open source I believe.
    In the context of my post, in that a "normal" wifi card being used with compatible software, resulting in a spectrum analyzer:

    http://www.airmagnet.com/products/spectrum_analyzer/

    BTW, does the Wi-Spy software work with many other wifi devices?

  8. #8
    My life is this forum Barry's Avatar
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    Quote Originally Posted by Re@lity View Post
    In the context of my post, in that a "normal" wifi card being used with compatible software, resulting in a spectrum analyzer:

    http://www.airmagnet.com/products/spectrum_analyzer/

    BTW, does the Wi-Spy software work with many other wifi devices?
    No, it works only with the wispy hardware. The airmagnet is specialized hardware too, it's not using a wifi card.

    Can I use the special Spectrum Analyzer adapter card for Wi-Fi connectivity?
    No, the Spectrum Analyzer adapter card uses a unique chipset designed to capture and analyze all nearby radio traffic in these bands. It does not function as a traditional Wi-Fi adapter. Customers can use an internal Centrino adapter at the same time, or take this adapter out of their laptops to use the PC card slot for an external adapter.

    Can I use a standard Wi-Fi card instead for Spectrum Analysis?
    The product requires a special card with unique chipset, custom-designed to implement RF spectrum analysis functions. This is not a standard Wi-Fi card, and does not provide any connectivity. The card must be in the laptop to run the AirMagnet Spectrum Analyzer application.
    Of course, if you really wanted to have some fun, go to Wal-Mart late at night and ask the greeter if they could help you find trashbags, roll of carpet, rope, quicklime, clorox and a shovel. See if they give you any strange looks. --Streaker69

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    This isn't so much a device that you buy and plug into a computer, but might help

    http://datasheets.maxim-ic.com/en/ds/MAX2140.pdf
    2.4ghz reciver

    http://www.maxim-ic.com/design_guide...IRELESS_23.pdf
    page 14

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    Dragging up an old thread, but here's something that is at least "new" to me.....

    Quite a breakthrough in the spectrum analyzer market:

    http://www.ubnt.com/airview/

    Again, it's a USB solution, but is priced starting at the $39 price point, according to the web page, making it massively available and affordable.
    I wonder how much the Airview2-EXT version is?

    It is Open Source, works with Windows, Mac and Linux and I read somewhere that it also comes complete with a Linux SDK "to promote development"

    Nice one Ubiquiti

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