FCC Question Pool Review

Amateur Extra Class (Element 4) • 2024-2028

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Question E7H10

From subelement E7 - E7H

E7H10
Answer: B

What information is contained in the lookup table of a direct digital synthesizer (DDS)?

AThe phase relationship between a reference oscillator and the output waveform
BAmplitude values that represent the desired waveform
CThe phase relationship between a voltage-controlled oscillator and the output waveform
DFrequently used receiver and transmitter frequencies