(NRQZ), established in 1958. RFI on environmental monitoring Prior to the introduction of Wi-Fi, one of the biggest applications of 5 GHz band is the Terminal Doppler Weather Radar. The decision to use 5 GHz spectrum for Wi-Fi was finalized in World Radiocommunication Conference in 2003; however, meteorological community was not involved in the process. The subsequent lax implementation and misconfiguration of DFS had caused significant disruption in weather radar operations in a number of countries around the world. In Hungary, the weather radar system was declared non-operational for more than a month. Due to the severity of interference, South African weather services ended up abandoning C band operation, switching their radar network to S band. Transmissions on adjacent bands to those used by passive remote sensing, such as weather satellites, have caused interference, sometimes significant. There is concern that adoption of insufficiently regulated 5G could produce major interference issues. Significant interference can significantly impair numerical weather prediction performance and incur substantially negative economic and public safety impacts. These concerns led US Secretary of Commerce Wilbur Ross and NASA Administrator Jim Bridenstine in February 2019 to urge the FCC to cancel proposed spectrum auctioning, which was rejected. See also Electromagnetic radiation Electromagnetic shielding Faraday cage Interference (communication) Power integrity Radio receiver Signal integrity Signal noise Twisted pair References External links ARRL, RFI Interference Handbook EMC Design Fundamentals Clemson's EMC Page (EMI Tools and Information) EMC Tutorials Electromagnetic compatibility Television terminology