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Sources of Loss in Coaxial Feed Lines

Which of the following is a source of loss in coaxial feed line?

Water intrusion into coaxial connectors

Correct. Water intrusion into the coaxial connectors can cause oxidation and corrosion, leading to increased resistance and signal loss.

High SWR

Correct. High SWR results in inefficient signal transmission because power that is reflected back towards the transmitter is not effectively radiated by the antenna, causing energy loss.

Multiple connectors in the line

Correct. Multiple connectors introduce additional potential points of impedance mismatch and insertion loss, each contributing to the overall signal degradation.

All these choices are correct

All these choices are correct because each of these factors independently contributes to loss in coaxial feed lines.

Explanation

When discussing coaxial feed lines, understanding potential sources of loss is crucial for ensuring optimal signal transmission. Coaxial cables are used to transfer radio frequency energy between an antenna and a transceiver. Any inefficiencies in this transfer process can degrade signal quality and reduce overall system performance. This question highlights common issues that can contribute to signal loss in coaxial feed lines, which is important for both troubleshooting and preventive maintenance. Water intrusion, high SWR (Standing Wave Ratio), and multiple connectors all introduce losses, making this question relevant for all amateur radio operators. Water intrusion into the connectors can cause corrosion and change the impedance, high SWR results in reflected power that is not transmitted effectively, and connectors add additional points of potential loss and impedance mismatch.

T9B08 2022-2026

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