Over at Make, Diana Eng is our favorite combination fashion designer / Ham radio geek. In this video, she explains how directional antennas operate.
Using a low power amateur radio transmitter and a simple light bulb receiver circuit, we see how radio waves and electromagnetic induction transmit energy and signals wirelessly through the air. We also see how dipole and Yagi antennas radiate their energy in different patterns. Read on to build your own dipole receiving antenna!
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