The beginner’s guide to RTL-SDR: what you can hear for $35 and a USB dongle
You don’t need a license, a tower, or a thousand-dollar radio. You need a $35 USB stick and a curiosity about what’s actually moving through the air around you. By The Long Frequency · April 2026 · 8 min read I remember the first time I plugged in an RTL-SDR dongle. It looked like a…