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How to Explore the Radio Spectrum, and What you can Find

Flying around you at this very moment are thousands of man-made radio signals. With a $20 USB dongle, you can visualize and decode a large number of them.

I’m sure you’re aware of humanity’s reliance on radio waves for practically every communications task. After all, how could it get much better? In a tiny fraction of a second, you can send millions of bits of…



All Things Redefining Humanity

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Alex Wulff

I'm a Harvard student, maker, and radio enthusiast. Check out my book on radio communications at and my website at