RFI_old
Radio Frequency Interference (RFI), both internally and externally generated, is an increasingly significant problem at the EVLA, 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.
The following pages list the RFI that are seen at the EVLA per frequency band, and show respective spectra:
- L-Band (1-2 GHz)
- S-Band (2-4 GHz)
- C-Band (4-8 GHz)
- X-Band (8-12 GHz)
- Ku-Band (12-18 GHz)
- K-Band (18-26.5 GHz)
- Ka-Band (26.5-40 GHz)
- Q-Band (40-50 GHz)
The links below provide other helpful information and/or plots related to RFI:
- RFI Spectra obtained using various tools/methods at the EVLA
- The Interference Protection Group (IPG)
- RFI Survey, January 2003, 2GHZ-18GHz (pdf)
- NTIA's US Frequency Allocation Chart
- Satellite Constellation Survey (July 1998)
For additional information about RFI, contact nrao-rfi@nrao.edu

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