CONTENTS - RECOMMENDATION ITU-R RA.1237-1 - Protection of the radio astronomy service from unwanted emissions resulting from applications of wideband digital modulation

Annex 1 Interference to radio astronomy from unwanted (spurious and out-of-band) emissions
1     Introduction
2     Spurious and out-of-band emissions from digital modulation
3     Interference levels for radio astronomy
4     Interference from satellites
5     Unwanted emissions from satellites of particular concern to radio astronomy
        5.1     Direct sequence spread spectrum
        5.2     Phase modulation of digital signals
6     Spurious and out-of-band emissions from terrestrial transmitters