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This month’s Gadget Freak comes courtesy of investment banker Hans Summers. He built a simple receiver capable of detecting QRSS transmissions on a fixed frequency. The QRSS receiver is powered by a computer’s USB port and the audio output feeds into the PC’s sound card. Hans used a toroidal transformer as matching and input filter, connected directly to a 30m (10MHz) dipole antenna and a useful oscillator/mixer IC as a crystal oscillator and mixer. Link.

Phillip Torrone

Editor at large – Make magazine. Creative director – Adafruit Industries, contributing editor – Popular Science. Previously: Founded – Hack-a-Day, how-to editor – Engadget, Director of product development – Fallon Worldwide, Technology Director – Braincraft.

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