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

Question: 1 / 400

Which of the following is a key component of a feedline?

Power Supply

Transponder

Impedance Matching Device

Coaxial Cable

A key component of a feedline is coaxial cable, which serves as the transmission medium that connects the radio transmitter or receiver to the antenna. The coaxial cable consists of a central conductor, an insulating layer, a conductive shield, and an outer insulating layer, which helps protect the signal from external electromagnetic interference and maintains a controlled impedance.

Using coaxial cable in a feedline is essential because it minimizes losses in signal strength over distance and helps ensure that the energy from the transmitter is efficiently delivered to the antenna. While other components like impedance matching devices may be relevant in specific contexts to ensure proper operation, they do not serve as the primary medium of communication in the feedline itself. Therefore, coaxial cable is the most fundamental element in this setup.

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