Technology
Antenna Gain
Quick fact
A typical Wi-Fi router has a gain of about 2–5 dBi, while a large satellite dish can exceed 40 dBi — focusing power into a narrow beam like a flashlight compared to a bare bulb.
Why this is interesting
Have you ever wondered why a satellite dish picks up signals so much better than a simple wire antenna? The secret is not amplification, but a property called antenna gain.