IntroductionRadio Frequency Interference (RFI), both internally and externally generated, is an increasingly significant problem at the VLA, particularly at wavelengths of 18cm and longer. This page points you to information on known RFI, current developments, and plans for handling the problem in the future. For each band surveyed, current and past postscript interference plots show signal power vs. frequency. Overlay plots identify the known emitters in each band.To the right is a picture of our new 54ft RFI Tower located at the VLA. Directional antennas mounted at the tower apex determine the direction of incidence of RFI. A list of identified RFI frequencies is also available.
Additional information on the Interference Protection Group (IPG) facilities and tools. For additional information email nrao-rfi@nrao.edu.
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