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The World Radiocommunication Conference (WRC) of delegations from over 140 nations is organized by the International Telecommunication Union (ITU) to negotiate proposals to change international radio spectrum regulations. Proposals, referred to as agenda items, are specific and concern narrow but potentially substantial changes to use of the spectrum that can have significant impacts on users. Most agenda items support the active use of the spectrum, so it is important for vulnerable, passive services to voice their concerns about potentially adverse effects on their operations. Two US passive...
The World Radiocommunication Conference (WRC) of delegations from over 140 nations is organized by the International Telecommunication Union (ITU) to negotiate proposals to change international radio spectrum regulations. Proposals, referred to as agenda items, are specific and concern narrow but potentially substantial changes to use of the spectrum that can have significant impacts on users. Most agenda items support the active use of the spectrum, so it is important for vulnerable, passive services to voice their concerns about potentially adverse effects on their operations. Two US passive services, the Radio Astronomy Service (RAS) and the Earth Exploration–Satellite Service (EESS), provide scientific observations of the universe and Earth through the use of both advanced receiver technology with extreme sensitivity and complex noise reduction algorithms. They are seriously adversely affected by what most active services would consider extremely low noise levels. This report presents the NAS and NAE views on agenda items that affect RAS and EESS and the committee’s recommendations.