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DIY-Spy: a homebrew 2.4GHz wi-fi spectrum analyzer


Tim made a “DIY-Spy: a homebrew 2.4GHz wi-fi spectrum analyzer” – he writes…

I was reading the Thinkgeek catalog a while back and an interesting gadget caught my eye: “Wi-Spy”, a 2.4GHz spectrum analyzer on a USB stick. Coming from the world where “spectrum analyzer” refers to a big benchtop box with a name like Le Croyright, we can’t afford those Agilent on it, my first thought was, “A good spectrum analyzer in the GHz range is like a gazillion bucks; what’s really inside this thing?” Not much, it turns out. After seeing the guts I would not use this device for anything remotely demanding accuracy, but on the bright side, it would be pretty straightforward to make your own that works just as well! Possibly with parts that are already on your board (*cough*XBee).


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1 Comment

  1. See http://www.science-workshop.com/
    -Tom

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