E1A01 (D) [97.305, 97.307(b)]
Why is it not legal to transmit a 3 kHz bandwidth USB signal with a carrier frequency of 14.348 MHz?
A. USB is not used on 20-meter phone
B. The lower 1 kHz of the signal is outside the 20-meter band
C. 14.348 MHz is outside the 20-meter band
D. The upper 1 kHz of the signal is outside the 20-meter band
