What is the maximum PEP output allowed for spread spectrum transmissions?
The correct answer is B: 10 watts. The maximum PEP output allowed for spread spectrum transmissions is 10 watts. This is much lower than the standard 1500-watt limit for most amateur operations. The lower limit helps prevent interference with other services that share these frequencies. For amateur radio operators, understanding this power restriction is essential for legal spread spectrum operation. This is a significant limitation compared to other modes.
Exam Tip
Spread spectrum power limit = 10 watts PEP. Think 'S'pread 'S'pectrum = '1'0 watts 'S'trict limit. Maximum PEP output is 10 watts, much lower than standard 1500-watt limit. Helps prevent interference with other services.
Memory Aid
"Spread spectrum power limit = 10 watts PEP. Think 'S'pread 'S'pectrum = '1'0 watts 'S'trict. Maximum PEP output is 10 watts. Much lower than standard limits to prevent interference."
Real-World Application
You operate spread spectrum on 2.4 GHz. Your maximum power is 10 watts PEP, much lower than the 1500 watts you could use on HF. This lower limit helps prevent interference with Wi-Fi and other services sharing the band. Operating above 10 watts would violate regulations.
Key Concepts
Why Other Options Are Wrong
Option A (100 milliwatts): Incorrect. 100 mW is too low - spread spectrum is allowed up to 10 watts PEP, not just 100 milliwatts.
Option C (100 watts): Incorrect. 100 watts exceeds the spread spectrum limit - the maximum is 10 watts PEP, not 100 watts.
Option D (1500 watts): Incorrect. 1500 watts is the standard HF limit, but spread spectrum has a much lower 10-watt limit.
题目解析
The correct answer is B: 10 watts. The maximum PEP output allowed for spread spectrum transmissions is 10 watts. This is much lower than the standard 1500-watt limit for most amateur operations. The lower limit helps prevent interference with other services that share these frequencies. For amateur radio operators, understanding this power restriction is essential for legal spread spectrum operation. This is a significant limitation compared to other modes.
考试技巧
Spread spectrum power limit = 10 watts PEP. Think 'S'pread 'S'pectrum = '1'0 watts 'S'trict limit. Maximum PEP output is 10 watts, much lower than standard 1500-watt limit. Helps prevent interference with other services.
记忆口诀
Spread spectrum power limit = 10 watts PEP. Think 'S'pread 'S'pectrum = '1'0 watts 'S'trict. Maximum PEP output is 10 watts. Much lower than standard limits to prevent interference.
实际应用示例
You operate spread spectrum on 2.4 GHz. Your maximum power is 10 watts PEP, much lower than the 1500 watts you could use on HF. This lower limit helps prevent interference with Wi-Fi and other services sharing the band. Operating above 10 watts would violate regulations.
错误选项分析
Option A (100 milliwatts): Incorrect. 100 mW is too low - spread spectrum is allowed up to 10 watts PEP, not just 100 milliwatts. Option C (100 watts): Incorrect. 100 watts exceeds the spread spectrum limit - the maximum is 10 watts PEP, not 100 watts. Option D (1500 watts): Incorrect. 1500 watts is the standard HF limit, but spread spectrum has a much lower 10-watt limit.
知识点
Spread spectrum power limit, PEP output, Power restrictions, Spread spectrum
Verified Content
Question from official FCC General Class question pool. Explanation reviewed by licensed amateur radio operators.