Radio frequency interference management efforts at the National Radio Astronomy Observatory Green Bank site

The National Radio Astronomy Observatory (NRAO) at Green Bank, WV operates a site featuring the Robert C. Byrd Green Bank Telescope, the largest fully-steerable radio telescope in the world. The telescope operates at frequencies from 300 MHz up to 100 GHz studying many effects. In addition to this telescope, the site is home to many other experiments from magentometers to future radio telescope engineering prototypes. These experiments are all hindered by interference from nearby and distant sources. The RFI suppression efforts at Green Bank are focused on providing the cleanest spectrum possible for our users. This is accomplished by a combination of local RFI mitigation, and through administration of the National Radio Quiet Zone (NRQZ), a 13,000 square mile area covering parts of West Virginia and Virginia.