An area surrounding the FCC monitoring station in Laurel, Maryland
An area in New Mexico surrounding the White Sands Test Area
An area surrounding the National Radio Astronomy Observatory✓Richtige Antwort
An area in Florida surrounding Cape Canaveral
Erklärung
The National Radio Quiet Zone is the block of Maryland, Virginia and West Virginia drawn around the radio astronomy site at Green Bank, West Virginia. FCC monitoring stations, White Sands and Cape Canaveral carry restrictions of their own, but none of them is the Quiet Zone.