Radio waves are all around us. They're used by cell phones, Wi-Fi routers, TV dishes, and even satellite networks to convey data on thousands of different frequencies. When we unlock a car door with the push of a button or stream music to wireless earbuds, that's radio. It's a simple yet dynamic technology that has been harnessed by creative experimenters for over a century--and now you can join the adventure Author Fredrik Jansson demystifies...
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