Which of the following could cause a high...

Question 1 / 27070ez27tTaLzLOxdZVYoQgN

Question 1 of 27070ez27tTaLzLOxdZVYoQgN

Which of the following could cause a high standing wave ratio on a transmission line?

Question 1 of 27070

Which of the following could cause a high standing wave ratio on a transmission line?

🔍 Key Concepts

• Standing Wave Ratio (SWR) and what it physically represents on a transmission line • The effect of impedance mismatch between the transmitter, transmission line, and antenna • What kinds of problems occur when an antenna system is not properly tuned

💭 Think About

• Ask yourself: Does SWR mainly change because of RF power level changes, or because of how efficiently power is transferred to the antenna? • Which option describes a condition that would create a mismatch between the transmission line and the antenna system? • Which options describe issues that are more about signal quality or strength, rather than the impedance relationship of the system?

✅ Before You Answer

• Recall that high SWR usually means reflected power due to mismatch, not just low or high forward power. • Identify which choice specifically affects the tuning/impedance match of the antenna system. • Eliminate any choices that only change the amount of power or modulation but do not change the impedance relationship between line and load.

Question 1 of 27070

Which of the following could cause a high standing wave ratio on a transmission line?

Excessive modulation.

An increase in output power.

A detuned antenna coupler .

Low power from the transmitter.