FCC Question Pool Review

Amateur Extra Class (Element 4) • 2024-2028

Switch License

Question E4E12

From subelement E4 - E4E

E4E12
Answer: A

What causes interference received as a series of carriers at regular intervals across a wide frequency range?

ASwitch-mode power supplies
BRadar transmitters
CWireless security camera transmitters
DElectric fences