Under what circumstances may a dealer sell an external RF power amplifier capable of operation below 144 MHz if it has not been granted FCC certification?
The correct answer is D: The amplifier is constructed or modified by an amateur radio operator for use at an amateur station. Under what circumstances may a dealer sell an external RF power amplifier capable of operation below 144 MHz if it has not been granted FCC certification is if the amplifier is constructed or modified by an amateur radio operator for use at an amateur station. Amateur-built amplifiers can be sold without FCC certification. For amateur radio operators, this is important for understanding amplifier sales. Understanding this helps when buying or selling amplifiers.
Exam Tip
Sell uncertified amplifier below 144 MHz = amplifier constructed/modified by amateur for amateur station use. Think 'U'ncertified 'A'mplifier = 'U'nique 'A'mateur-built exception. Amateur-built amplifiers can be sold without FCC certification. Not gain limit, not dealer assembly, not reciprocal certification - just amateur-built.
Memory Aid
"Sell uncertified amplifier below 144 MHz = amplifier constructed/modified by amateur for amateur station use. Think 'U'ncertified 'A'mplifier = 'A'mateur-built. Amateur-built amplifiers can be sold without FCC certification. Important for understanding amplifier sales."
Real-World Application
An external RF power amplifier capable of operation below 144 MHz without FCC certification: A dealer may sell it if the amplifier is constructed or modified by an amateur radio operator for use at an amateur station. Amateur-built amplifiers are exempt from certification requirements. This is the exception - amateur-built amplifiers can be sold without certification.
FCC Part 97.315Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. Gain less than 23 dB when driven by 10 watts or less isn't the exception - amateur-built amplifiers are the exception. Gain limit isn't the exception.
Option B: Incorrect. Equipment dealer assembled from kit isn't the exception - amateur-built amplifiers are the exception. Dealer assembly isn't the exception.
Option C: Incorrect. Manufactured and certificated in reciprocal country isn't the exception - amateur-built amplifiers are the exception. Reciprocal certification isn't the exception.
题目解析
The correct answer is D: The amplifier is constructed or modified by an amateur radio operator for use at an amateur station. Under what circumstances may a dealer sell an external RF power amplifier capable of operation below 144 MHz if it has not been granted FCC certification is if the amplifier is constructed or modified by an amateur radio operator for use at an amateur station. Amateur-built amplifiers can be sold without FCC certification. For amateur radio operators, this is important for understanding amplifier sales. Understanding this helps when buying or selling amplifiers.
考试技巧
Sell uncertified amplifier below 144 MHz = amplifier constructed/modified by amateur for amateur station use. Think 'U'ncertified 'A'mplifier = 'U'nique 'A'mateur-built exception. Amateur-built amplifiers can be sold without FCC certification. Not gain limit, not dealer assembly, not reciprocal certification - just amateur-built.
记忆口诀
Sell uncertified amplifier below 144 MHz = amplifier constructed/modified by amateur for amateur station use. Think 'U'ncertified 'A'mplifier = 'A'mateur-built. Amateur-built amplifiers can be sold without FCC certification. Important for understanding amplifier sales.
实际应用示例
An external RF power amplifier capable of operation below 144 MHz without FCC certification: A dealer may sell it if the amplifier is constructed or modified by an amateur radio operator for use at an amateur station. Amateur-built amplifiers are exempt from certification requirements. This is the exception - amateur-built amplifiers can be sold without certification.
错误选项分析
Option A: Incorrect. Gain less than 23 dB when driven by 10 watts or less isn't the exception - amateur-built amplifiers are the exception. Gain limit isn't the exception. Option B: Incorrect. Equipment dealer assembled from kit isn't the exception - amateur-built amplifiers are the exception. Dealer assembly isn't the exception. Option C: Incorrect. Manufactured and certificated in reciprocal country isn't the exception - amateur-built amplifiers are the exception. Reciprocal certification isn't the exception.
知识点
External RF power amplifier, Below 144 MHz, No FCC certification, Amateur-built
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.