PRETS 300 157-1996 Satellite Earth Stations and Systems (SES); Receive-Only Very Small Aperture Terminals (VSATs) Operating in the 11/12 GHz Frequency Bands Second Edition
ETSI - European Telecommunications Standards Institute
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PRETS 300 157-1996
Scope
"This European Telecommunication Standard (ETS) provides specifications for the standardisation of the characteristics of Receive-Only (RO) Very Small Aperture Terminals (VSATs) operating as part of a satellite network (e.g. star@ meshed or point-to-point) used for the distribution of information. These VSATs have the following characteristics: - operating in the exclusive part of the Ku-band allocated to the Fixed Satellite Services (FSS)@ 12@50 to 12@75 GHz (Space-Earth)@ and/or in the shared parts of the Ku-band@ allocated to the FSS and Fixed Services (FS)@ 10@70 to 11@70 GHz (Space-Earth); - in these frequency bands linear polarisation is normally used and the system operates through satellites at 3??pacing; - designed usually for unattended operation; - antenna diameter not exceeding 3@8 m@ or equivalent corresponding aperture. The equipment considered in this ETS comprises both the ""outdoor unit""@ usually composed of the antenna sub-system and associated Low Noise Block (LNB)@ and the ""indoor unit"" composed of the remaining part of the communication chain@ including the cable between these two units. This ETS applies to the VSAT with its ancillary equipment and its various terrestrial ports@ and operated under the conditions which are within the ranges of humidity@ temperature and supply voltage declared by the manufacturer. EMC specifications are contained in ETS 300 673 [2]. This ETS does not contain any specifications or information on the installation of the VSATs. The specifications have been selected to ensure an adequate level of compatibility for VSATs. The levels@ however@ do not cover extreme cases which may occur in any location but with a low probability of occurrence. In such a case it may be necessary to use special protection applied to either the source of interference@ or the interfered part or both. This ETS deals with two types of specification: - specifications defined in order to protect other users of the frequency spectrum@ both satellite and terrestrial@ from unacceptable interference. In addition@ these specifications are specified for the purposes of structural safety and lightning protection as well as protection from harmful interference; -specifications related to characteristics which contribute to the quality of reception by providing the VSAT with minimum interference protection from other radio systems. These specifications apply if required by the manufacturer."
PRETS 300 157-1996 history
1996PRETS 300 157-1996 Satellite Earth Stations and Systems (SES); Receive-Only Very Small Aperture Terminals (VSATs) Operating in the 11/12 GHz Frequency Bands Second Edition
1995PRETS 300 157-1995 Satellite Earth Stations and Systems (SES); Receive-Only Very Small Aperture Terminals (VSATs) Used for Data Distribution Operating in the 11/12 GHz Frequency Bands Second Edition
1992PRETS 300 157-1992 Satellite Earth Stations (SES); Receive-Only Very Small Aperture Terminals (VSATs) Used for Data Distribution Operating in the 11/12 GHz Frequency Bands
1991PRETS 300 157-1991 Satellite Earth Stations (SES); Receive-Only VSATs Used for Data Distribution (DE/SES-2001)