Which of the following is an advantage of using an antenna analyzer compared to an SWR bridge?
The correct answer is B: Antenna analyzers compute SWR and impedance automatically. Which of the following is an advantage of using an antenna analyzer compared to an SWR bridge is that antenna analyzers compute SWR and impedance automatically. Antenna analyzers provide automatic calculations. For amateur radio operators, this is important for antenna testing. Understanding this helps when testing antennas.
Exam Tip
Antenna analyzer advantage = computes SWR and impedance automatically. Think 'A'ntenna 'A'nalyzer = 'A'utomatic 'A'nalysis. Antenna analyzers provide automatic calculations. Not auto-tuning, not modulation display - just automatic computation.
Memory Aid
"Antenna analyzer advantage = computes SWR and impedance automatically. Think 'A'ntenna 'A'nalyzer = 'A'utomatic. Antenna analyzers provide automatic calculations. Important for antenna testing."
Real-World Application
Using an antenna analyzer compared to an SWR bridge: An advantage is that antenna analyzers compute SWR and impedance automatically. With an SWR bridge, you need to make calculations manually. Analyzers display the values directly. This is the advantage - automatic computation of SWR and impedance.
Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. Automatically tuning antenna isn't an advantage - analyzers measure, they don't tune. Auto-tuning isn't the advantage.
Option C: Incorrect. Displaying time-varying modulation envelope isn't an advantage - analyzers measure impedance/SWR, not modulation. Modulation display isn't the advantage.
Option D: Incorrect. Since A and C are not correct, 'all of the above' cannot be correct. Only automatic computation is the advantage.
题目解析
The correct answer is B: Antenna analyzers compute SWR and impedance automatically. Which of the following is an advantage of using an antenna analyzer compared to an SWR bridge is that antenna analyzers compute SWR and impedance automatically. Antenna analyzers provide automatic calculations. For amateur radio operators, this is important for antenna testing. Understanding this helps when testing antennas.
考试技巧
Antenna analyzer advantage = computes SWR and impedance automatically. Think 'A'ntenna 'A'nalyzer = 'A'utomatic 'A'nalysis. Antenna analyzers provide automatic calculations. Not auto-tuning, not modulation display - just automatic computation.
记忆口诀
Antenna analyzer advantage = computes SWR and impedance automatically. Think 'A'ntenna 'A'nalyzer = 'A'utomatic. Antenna analyzers provide automatic calculations. Important for antenna testing.
实际应用示例
Using an antenna analyzer compared to an SWR bridge: An advantage is that antenna analyzers compute SWR and impedance automatically. With an SWR bridge, you need to make calculations manually. Analyzers display the values directly. This is the advantage - automatic computation of SWR and impedance.
错误选项分析
Option A: Incorrect. Automatically tuning antenna isn't an advantage - analyzers measure, they don't tune. Auto-tuning isn't the advantage. Option C: Incorrect. Displaying time-varying modulation envelope isn't an advantage - analyzers measure impedance/SWR, not modulation. Modulation display isn't the advantage. Option D: Incorrect. Since A and C are not correct, 'all of the above' cannot be correct. Only automatic computation is the advantage.
知识点
Antenna analyzer, SWR bridge, Compute SWR and impedance automatically, Antenna testing
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.