What is the output PEP of an unmodulated carrier if the average power is 1060 watts?
The correct answer is B: 1060 watts. The output PEP of an unmodulated carrier if the average power is 1060 watts is 1060 watts. An unmodulated carrier has constant power, so PEP equals average power (ratio is 1:1). For amateur radio operators, this is a fundamental relationship. Understanding this helps when calculating power for unmodulated carriers.
Exam Tip
Unmodulated carrier PEP = average power = 1060W. Think 'U'nmodulated 'C'arrier = 'U'niform 'C'onstant = 'P'EP = average. Unmodulated carrier has constant power, so PEP equals average power. Not 530W, not 1500W, not 2120W - just 1060W.
Memory Aid
"Unmodulated carrier PEP = average power = 1060W. Think 'U'nmodulated 'C'arrier = 'U'niform 'C'onstant. Unmodulated carrier has constant power, so PEP equals average power. Ratio is 1:1."
Real-World Application
An unmodulated carrier has average power of 1060 watts. Since it's unmodulated (constant power), PEP also equals 1060 watts. The ratio is 1:1 - PEP equals average power for unmodulated carriers. This is different from modulated signals where PEP is higher.
Key Concepts
Why Other Options Are Wrong
Option A (530 watts): Incorrect. 530 watts is half the average - unmodulated carrier has PEP = average, not half. Calculation error.
Option C (1500 watts): Incorrect. 1500 watts is too high - unmodulated carrier has PEP = average (1060W), not 1500W. Calculation error.
Option D (2120 watts): Incorrect. 2120 watts is 2× average - unmodulated carrier has PEP = average, not 2×. Calculation error.
题目解析
The correct answer is B: 1060 watts. The output PEP of an unmodulated carrier if the average power is 1060 watts is 1060 watts. An unmodulated carrier has constant power, so PEP equals average power (ratio is 1:1). For amateur radio operators, this is a fundamental relationship. Understanding this helps when calculating power for unmodulated carriers.
考试技巧
Unmodulated carrier PEP = average power = 1060W. Think 'U'nmodulated 'C'arrier = 'U'niform 'C'onstant = 'P'EP = average. Unmodulated carrier has constant power, so PEP equals average power. Not 530W, not 1500W, not 2120W - just 1060W.
记忆口诀
Unmodulated carrier PEP = average power = 1060W. Think 'U'nmodulated 'C'arrier = 'U'niform 'C'onstant. Unmodulated carrier has constant power, so PEP equals average power. Ratio is 1:1.
实际应用示例
An unmodulated carrier has average power of 1060 watts. Since it's unmodulated (constant power), PEP also equals 1060 watts. The ratio is 1:1 - PEP equals average power for unmodulated carriers. This is different from modulated signals where PEP is higher.
错误选项分析
Option A (530 watts): Incorrect. 530 watts is half the average - unmodulated carrier has PEP = average, not half. Calculation error. Option C (1500 watts): Incorrect. 1500 watts is too high - unmodulated carrier has PEP = average (1060W), not 1500W. Calculation error. Option D (2120 watts): Incorrect. 2120 watts is 2× average - unmodulated carrier has PEP = average, not 2×. Calculation error.
知识点
PEP, Unmodulated carrier, Average power, 1:1 ratio
Verified Content
Question from official FCC General Class question pool. Explanation reviewed by licensed amateur radio operators.