ARRL Technician Practice Exam

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Prepare for the ARRL Technician Exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

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Why should coax connectors exposed to the weather be sealed against water intrusion?

To enhance signal strength
To prevent an increase in feed line loss
To allow for easier replacement
To reduce interference

The correct answer is: To prevent an increase in feed line loss

Coax connectors that are exposed to outdoor conditions are vulnerable to water intrusion, which can significantly degrade the performance of a communication system. By sealing these connectors, you prevent moisture from entering, which can lead to corrosion, increased resistance, and ultimately, higher feed line loss. This is critical because feed line loss represents the reduction in signal strength that occurs as the signal travels through the cable and connectors. Water can create a path for electrical shorts or introduce additional resistance, which compromises the integrity of the signal being transmitted. Therefore, sealing these connectors is a crucial proactive measure to maintain optimal signal performance and minimize feed line loss over time. While sealing connectors may indirectly affect the signal strength and potentially lessen interference, the primary focus of sealing is to ensure a reliable and low-loss connection by keeping moisture out.