spurious emissions below should apply only for spurious emissions in accordance with the definition, as generic spurious emission limits. Out-of-band emissions are excluded, but since many newer modulation standards are not included in Recommendation ITU-R SM.328, it is recommended that the emission masks defined in the digital standards be used for out-of-band emissions until Recommendation ITU-R .
Rec. ITU-R SM.329-10 3 o) that spurious domain emissions may exist in the whole radio spectrum, but practical difficulties may dictate a frequency limit above which they need not to be measured p) that Recommendation ITU-R SM.1539 deals with variation of the boundary between the out-of-band and spurious domains, noting, Spurious emissions include harmonic emissions, parasitic emissions, intermodulation products and frequency conversion products, but exclude out-of-band emissions (see RR No. S1.145). The maximum permissible level of spurious emissions is specified in Recommenda-tion ITU-R SM.329 for all radio services. 1.8 Unwanted emissions, ITU-R: Publication Date: 1 September 2012: Status: active: Page Count: 41: scope: This Recommendation provides limits for unwanted emissions in the spurious domain, as well as measurement methods of spurious domain emissions . Document History. ITU-R.
2 Radio astronomy service (Recommendation ITU-R RA.769) 3 Earth exploration-satellite and meteorological-satellite passive sensing (Recommendation ITU-R SA.1029) Annex 4 – List of ITU-R Recommendations relating to spurious emissions for some specific services Annex 5 – Examples of applying 43 + 10 log P to calculate attenuation requirements, version of Recommendation ITU-R SM.329. (WRC-12) 5 Spurious domain emission limits for combined radiocommunication and information technology equipment are those for the radiocommunication transmitters. (WRC-12) 6 The frequency range of the measurement of spurious domain emissions is from 9 kHz to 110 GHz or the second harmonic if higher. (WRC-03), 8/18/2016 · The ITU-R Radio Regulations define the followings in Nos. 1.152, 1.144, 1.145 and 1.146: 1.152 Necessary bandwidth: For a given class of emission , the width of the frequency band which is just sufficient to ensure the transmission of information at the rate and with the quality required under specified conditions.
2 Rec. ITU-R M.1314 ANNEX 1 Reduction of spurious emissions of radar systems operating in the 3 GHz and 5 GHz bands 1 Introduction In recent years there has been a significant increase in the number of reported cases of radar interference to fixed radio-relay stations operating around 4, 5 and 6 GHz, and fixed-satellite earth stations operating around 4 GHz.
4 Levels of emissions in the spurious domain The present ITU limits for emissions in the spurious domain from short range devices are defined in ITU-R SM.329-12 [5]. These limits do not, of themselves, claim to provide adequate protection from harmful interference, but there is evidence that they are being taken as a planning basis by, You can search ITU-R Questions using the key filters in left column. Selection of the filtering elements are found by clicking each icon. More than one filter will work as additional filtering (the output will be the Questions satisfying all the f iltering co nditions).
