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A Yagi is a directional antenna made of several parallel elements on a boom. Only the driven element connects to the feed line; a slightly longer reflector behind it and shorter directors in front focus the signal in one direction, giving gain where it points and rejecting signals from behind. On HF, a three-element beam on a tower, turned by a rotator, is the classic DX antenna. On 2 meters a Yagi is small enough to hold in the hand for satellites, contests and fox hunts. Read more…