Except for some specific restrictions, what is the maximum peak envelope power output for Technician class operators using frequencies above 30 MHz?
The correct answer is D: 1500 watts. According to FCC Part 97.313, Technician class operators (and all license classes) can use up to 1500 watts PEP (peak envelope power) on frequencies above 30 MHz, except for some specific restrictions on certain bands or segments. This is the general power limit for VHF and UHF operations.
The 1500-watt limit applies to most VHF/UHF operations, but there are exceptions. For example, some bands have lower limits, and certain segments may have specific restrictions. However, the general rule is 1500 watts PEP above 30 MHz. This higher power limit compared to HF reflects the different propagation characteristics of VHF/UHF bands, where higher power can be more necessary for reliable communications, especially for weak-signal work or satellite operations.
Exam Tip
VHF/UHF power = 1500 watts PEP. Remember: Above 30 MHz, the general limit is 1500 watts PEP. This is much higher than the HF limit for Technicians (200 watts).
Memory Aid
"**A**bove **3**0 MHz = **1**500 watts (think 'A3 = 1500')"
Real-World Application
You're operating on 2 meters (144-148 MHz) with a high-power amplifier. Your station is capable of 1000 watts PEP output, which is well within the 1500-watt limit for frequencies above 30 MHz. This power level helps you make contacts through weak-signal propagation modes like meteor scatter or tropospheric ducting, where higher power can make the difference between making a contact and not.
FCC Part 97.313Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. 50 watts is far below the general limit. While some operators use lower power, the maximum allowed is 1500 watts PEP.
Option B: Incorrect. 100 watts is not the limit. The general limit is 1500 watts PEP above 30 MHz.
Option C: Incorrect. 500 watts is below the allowed maximum. The limit is 1500 watts PEP, though some specific restrictions may apply to certain bands.
题目解析
The correct answer is D: 1500 watts. According to FCC Part 97.313, Technician class operators (and all license classes) can use up to 1500 watts PEP (peak envelope power) on frequencies above 30 MHz, except for some specific restrictions on certain bands or segments. This is the general power limit for VHF and UHF operations. The 1500-watt limit applies to most VHF/UHF operations, but there are exceptions. For example, some bands have lower limits, and certain segments may have specific restrictions. However, the general rule is 1500 watts PEP above 30 MHz. This higher power limit compared to HF reflects the different propagation characteristics of VHF/UHF bands, where higher power can be more necessary for reliable communications, especially for weak-signal work or satellite operations.
考试技巧
VHF/UHF power = 1500 watts PEP. Remember: Above 30 MHz, the general limit is 1500 watts PEP. This is much higher than the HF limit for Technicians (200 watts).
记忆口诀
**A**bove **3**0 MHz = **1**500 watts (think 'A3 = 1500')
实际应用示例
You're operating on 2 meters (144-148 MHz) with a high-power amplifier. Your station is capable of 1000 watts PEP output, which is well within the 1500-watt limit for frequencies above 30 MHz. This power level helps you make contacts through weak-signal propagation modes like meteor scatter or tropospheric ducting, where higher power can make the difference between making a contact and not.
错误选项分析
Option A: Incorrect. 50 watts is far below the general limit. While some operators use lower power, the maximum allowed is 1500 watts PEP. Option B: Incorrect. 100 watts is not the limit. The general limit is 1500 watts PEP above 30 MHz. Option C: Incorrect. 500 watts is below the allowed maximum. The limit is 1500 watts PEP, though some specific restrictions may apply to certain bands.
知识点
FCC Part 97.313, 1500 watts PEP, VHF/UHF power limits, Above 30 MHz
Verified Content
Question from official FCC Technician Class question pool. Explanation reviewed by licensed amateur radio operators.