Master the Waves: Ham Radio Extra Class 2026 Practice Test – Tune In and Transmit Success!

The design feature of a Yagi antenna indeed includes a driven element and one or more parasitic elements, making it capable of directional gain. The driven element is where the transmitter connects, allowing the antenna to radiate the signal. The parasitic elements, which include reflectors and directors, aid in shaping the antenna's radiation pattern. The presence of these additional elements enhances the gain in a specific direction, making the Yagi antenna very effective for point-to-point communication over the frequencies it is designed for.

The design’s effectiveness also relies on the interference created by these parasitic elements, which work to reflect and direct the radio waves more efficiently toward the desired direction, thus improving the antenna's performance.