Ham Amateur Radio Technician Practice Exam 2026 - Free Technician Practice Questions and Study Guide

Question: 1 / 470

What is one disadvantage of using a shortened mobile antenna as opposed to a full-size antenna?

They are more expensive to install

They require more maintenance

Operating bandwidth may be very limited

Using a shortened mobile antenna generally results in limited operating bandwidth due to its physical design. Full-size antennas are optimized to operate effectively across a broader range of frequencies, allowing greater flexibility for communications. In contrast, shortened antennas tend to exhibit resonant characteristics at specific frequencies, which can limit their efficiency and effectiveness outside of those ranges. This can mean reduced performance in terms of signal strength and clarity, particularly if the operating frequency deviates significantly from the antenna's resonant frequency.

The other options, while they may pertain to different aspects of antenna technology, do not directly relate to one of the primary challenges associated with shortened antennas. They are often more economical and can be designed for durability, thus not directly impacting their efficiency in terms of bandwidth.

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They are less durable in adverse weather

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