E1F03 — Amateur Extra Class

E1F03 : 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?
A Gain is less than 23 dB when driven by power of 10 watts or less
B The equipment dealer assembled it from a kit
C It was manufactured and certificated in a country which has a reciprocal certification agreement with the FCC
D The amplifier is constructed or modified by an amateur radio operator for use at an amateur station
Correct Answer: The amplifier is constructed or modified by an amateur radio operator for use at an amateur station