What is meant by the blocking dynamic range of a receiver?
The correct answer is A: The difference in dB between the noise floor and the level of an incoming signal that will cause 1 dB of gain compression. What is meant by the blocking dynamic range of a receiver is the difference in dB between the noise floor and the level of an incoming signal that will cause 1 dB of gain compression. Blocking dynamic range measures how strong a signal can be before compression. For amateur radio operators, this is important for receiver performance. Understanding this helps when evaluating receivers.
Exam Tip
Blocking dynamic range = difference in dB between noise floor and signal causing 1 dB gain compression. Think 'B'locking 'D'ynamic 'R'ange = 'B'efore 'D'istortion 'R'ange (1 dB compression). Blocking dynamic range measures how strong a signal can be before compression. Not FM signal difference, not third-order intercept, not third-order IMD - just noise floor to 1 dB compression.
Memory Aid
"Blocking dynamic range = difference in dB between noise floor and signal causing 1 dB gain compression. Think 'B'locking 'D'ynamic 'R'ange = '1' dB compression. Blocking dynamic range measures how strong a signal can be before compression. Important for receiver performance."
Real-World Application
The blocking dynamic range of a receiver: It's the difference in dB between the noise floor and the level of an incoming signal that will cause 1 dB of gain compression. This measures how strong a signal can be before the receiver starts to compress. This is what blocking dynamic range is - noise floor to 1 dB compression.
Key Concepts
Why Other Options Are Wrong
Option B: Incorrect. Minimum difference between two FM signals causing blocking isn't blocking dynamic range - it's the difference between noise floor and signal causing 1 dB compression. FM signal difference isn't the definition.
Option C: Incorrect. Difference between noise floor and third-order intercept point isn't blocking dynamic range - it's the difference between noise floor and signal causing 1 dB compression. Third-order intercept isn't the definition.
Option D: Incorrect. Minimum difference between two signals producing third-order IMD isn't blocking dynamic range - it's the difference between noise floor and signal causing 1 dB compression. Third-order IMD isn't the definition.
题目解析
The correct answer is A: The difference in dB between the noise floor and the level of an incoming signal that will cause 1 dB of gain compression. What is meant by the blocking dynamic range of a receiver is the difference in dB between the noise floor and the level of an incoming signal that will cause 1 dB of gain compression. Blocking dynamic range measures how strong a signal can be before compression. For amateur radio operators, this is important for receiver performance. Understanding this helps when evaluating receivers.
考试技巧
Blocking dynamic range = difference in dB between noise floor and signal causing 1 dB gain compression. Think 'B'locking 'D'ynamic 'R'ange = 'B'efore 'D'istortion 'R'ange (1 dB compression). Blocking dynamic range measures how strong a signal can be before compression. Not FM signal difference, not third-order intercept, not third-order IMD - just noise floor to 1 dB compression.
记忆口诀
Blocking dynamic range = difference in dB between noise floor and signal causing 1 dB gain compression. Think 'B'locking 'D'ynamic 'R'ange = '1' dB compression. Blocking dynamic range measures how strong a signal can be before compression. Important for receiver performance.
实际应用示例
The blocking dynamic range of a receiver: It's the difference in dB between the noise floor and the level of an incoming signal that will cause 1 dB of gain compression. This measures how strong a signal can be before the receiver starts to compress. This is what blocking dynamic range is - noise floor to 1 dB compression.
错误选项分析
Option B: Incorrect. Minimum difference between two FM signals causing blocking isn't blocking dynamic range - it's the difference between noise floor and signal causing 1 dB compression. FM signal difference isn't the definition. Option C: Incorrect. Difference between noise floor and third-order intercept point isn't blocking dynamic range - it's the difference between noise floor and signal causing 1 dB compression. Third-order intercept isn't the definition. Option D: Incorrect. Minimum difference between two signals producing third-order IMD isn't blocking dynamic range - it's the difference between noise floor and signal causing 1 dB compression. Third-order IMD isn't the definition.
知识点
Blocking dynamic range, Receiver, Difference in dB, Noise floor, Signal causing 1 dB gain compression
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.