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Antennas & Propagation

How energy leaves the radio and crosses the gap — dipoles, Yagis, and dishes, the masts that hold them up, and the way waves refract, reflect, and bend around the ionosphere and the horizon.

Antenna (radio)

Antenna (radio)

Yagi–Uda antenna

Yagi–Uda antenna

Parabolic antenna

Parabolic antenna

Whip antenna

Whip antenna

Radio masts and towers

Radio masts and towers

Ionosphere

Ionosphere

Horn antenna

Horn antenna

Waveguide

Waveguide