Which of the following is a common antenna type used in amateur radio?

The dipole antenna is recognized as one of the most common types of antennas used in amateur radio due to its simplicity, effectiveness, and ease of construction. A dipole antenna consists of two conductive elements, typically made from a length of wire, that are fed with a feed line at its center. This design works well across a wide range of frequencies, making it versatile for various amateur radio applications.

One of the key advantages of a dipole is that it can be easily adapted for different bands by changing its length; the total length of the wire should ideally be about half the wavelength of the frequency for optimal performance. Furthermore, dipole antennas can be oriented in multiple ways, such as horizontally or vertically, which can be useful for different types of communication, whether it be long-distance, local, or within specific bands.

While the other antenna types listed, such as Yagi, loop, and vertical antennas, are also popular in the amateur radio community, they have specific uses or are more complex in design and construction compared to the simple dipole. The Yagi is known for its directionality and gain, loops can be compact and efficient, and verticals are often used for their low-profile and all-around radiation patterns. However, the dip