Users are responsible for ensuring compatibility between earth stations within their network, and to comply with Eutelsat criteria for minimising interference between earth stations and Eutelsat satellites on which capacity is provided.

To assist prospective users, our documentation details the performance characteristics necessary to satisfy the technical requirements for approval to access the Eutelsat space segment and to qualify for acceptance as a “Standard” earth station.

For any queries, please contact the Earth Station Approval Office:
Phone: +33 1 53 98 39 25


Applications for earth stations to access the Eutelsat space segment are processed exclusively via our corporate Extranet.

If you have any queries, please contact the Earth Station Approval Office:
Phone: +33 1 53 98 39 25


    To become a Eutelsat operator and submit earth station applications to access the Eutelsat space segment, please register on our Extranet. Once you have been registered as a Eutelsat Operator you will receive confirmation that you may submit earth station applications for approval.


    Registered Eutelsat operators can submit applications to access the Eutelsat space segment via our Extranet. This is the fastest and most effective way to access the Eutelsat space segment. Applications by email will be accepted, however, using the following form:


    If you are a registered Eutelsat Operator, you may submit your application for VSAT approval via our Extranet. This is the fastest and most effective way to have VSATs approved. Applications by email will be accepted, using the forms:


Earth Station Standards

The Eutelsat Earth Station Standards provide detailed technical and operational performance characteristics that are required from earth stations, and associated equipment, to access the Eutelsat space segment.

The following standards apply:

  • Earth Station Minimum Technical and Operational Requirements. Standard M, EESS 502 Iss., Iss.15, Rev.3
  • Interactive Satellite Terminal (IST) Standard, EESS 503 Iss.1, Rev.0
  • Nomenclature of Standard M-x Issue 1 Rev. 2 (Range of the Applicability of Standard M-x)
ESOG Handbooks

The ESOG handbooks (Eutelsat Systems Operations Guides) provide necessary information to successfully operate earth stations within the Eutelsat satellite system.

download-icon.svgEarth Station Standards
ESOG 100, Issue 4.0, June 2009 (PDF, 243 KB)

download-icon.svgEarth station access and approval procedures
ESOG 110, Issue 4.2, Feb. 2009 (PDF, 295 KB)

download-icon.svgAntenna and VSATs type approval
ESOG 120, June 2020 (PDF, 4 MB)

download-icon.svgEarth station verification and assistance (ESVA)
ESOG 130, Issue 2.0, July 2000 (PDF, 1.5 MB)

download-icon.svgOperational management, control, monitoring and co-ordination ESOG 140, Issue 3.3, July 2008 (PDF, 289 KB)

download-icon.svgVSATs' ODUs Type Approval
ESOG 160, Issue 1.1, July 2008 (PDF, 278 KB)

download-icon.svgTelevision handbook
ESOG 210, Issue 1.1, Sept. 2005, Annex E modified Feb. 2013 (PDF, 308 KB)

download-icon.svgSatellite multi service handbook
ESOG 220, Issue 2.0, July 2004 (PDF, 150 KB)

download-icon.svgVSAT handbook
ESOG 230, Issue 2.1, July 2008 (PDF, 257 KB)

download-icon.svgManual and Auto-Deploy terminals handbook
ESOG 260, Issue 2.1, Oct. 2012 (440 KB)

Multi-lingual Information

The following information is available in several languages, to advise Earth Station operators on Eutelsat's approval procedures, line-up procedures, system discipline and intereference management procedures.


Earth station line-ups demonstrate that antenna and associated equipment meet the mandatory requirements and the expected performance described in the earth station standards and transmission plans.

The following tests are mandatory or recommended:


ESVA (Earth Station Verification and Assistance) via satellite of the antenna transmit sidelobe co-polar and cross-polar pattern characteristics of the earth station. For more information: ESOG 130: Earth Station Verification and Assistance (PDF, 1.37 MB)


PTLU (Pre-Transmission Line-Up) tests are mandatory prior to any access to the Eutelsat space segment (e.g. SNGs). The Eutelsat CSC will control transmit EIRP, frequency, cross-polarisation, bit rate.
For more information: ESOG 140: Operational management (PDF, 106 KB)


IFLU (Initial Full Line-up) tests are strongly recommended to fully evaluate the RF and Base-band performance of a new earth station (e.g. for broadcasting, internet backbone connections, SNGs). For more information: ESOG 210: Leased services Line-ups (PDF, 369 KB) and Line-Up of Digital Carriers (PDF, 18 KB)

SMS Line-ups

These tests are strongly recommended to fully evaluate the satellite link for a given earth station (e.g. for data transmissions). For more information: ESOG 220: Business Services Line-ups (PDF, 209 KB)

VSAT Alignment

For more information: ESOG 230: VSAT line-ups/registration (PDF, 118 KB)



    • What are the compulsory steps to perform in order for an earth station to access the Eutelsat space segment?
      • Once the space capacity has been reserved, the technical data of the earth station must be submitted for approval to access the Eutelsat space segment. The application is processed on-line, and once the technical data has been verified and the earth station approved, an official approval letter will be sent by e-mail confirming the assigned earth station code and the access conditions. In some cases the earth station may be subject to tests to confirm the performance of the antenna and associated ground equipment.

        Before accessing the Eutelsat space segment, it is imperative that the Eutelsat CSC is called in order to carry out a verification test before the transmission takes place.

        The above steps are necessary for all types of antennas, including the Eutelsat type approved.

        For SNG access, see also the document SNG carriers Universal Access Procedures (PDF, 114 KB)

    • What type of technical data must be submitted to approve an earth station to access the Eutelsat space segment?
      • The following data is required to submit an earth station for approval:

        General: Earth station name, type of station, planned type of service

        Fixed earth station location: Nearest town, country, latitude, longitude, address, telephone, facsimile, e-mail

        Service: Type of service, planned start date

        Antenna: the information required depends on the type of antenna chosen:

        • Type approved or individually approved antenna: Only tracking information and G/T are required
        • Antenna (Other): Manufacturer of main reflector, model, type of antenna, manufacturer of feed, number of feed ports, type of receiver, polarisation, tracking, Tx and Rx gains, G/T
        • Transmit equipment: Type, rating, maximum EIRP capability, overall RMS EIRP stability, Tx frequency stability, Number of Up converters, Number of Down converters
    • Why do earth stations need to be attributed a Eutelsat earth station code prior to accessing the Eutelsat space segment?
      • The Eutelsat earth station code identifies univocally the earth station and in particular, allows the control and monitoring of its access to the Eutelsat space segment.

        The code is composed of two or three fields separated by a hyphen:
        Country code (maximum three letters, e.g. F for France, ITA for Italy, etc.)
        Town or site code (maximum three letters e.g. PAR for Paris)
        Progressive three digit code.
        For example: F-PAR-001

        For transportable earth stations, only the first and third field are normally present: for example: F-99

        For VSATs, the second field is replaced by a three-letter code with the abbreviation of the VSAT network name; the third field contains four digits and is followed by the letter V. For example: F-ABC-0001V

    • Why and how should VSAT operators provide Eutelsat with regular updates of the locations of their terminals?
    • What is a UPPC?
    • How do you calculate polarisation azimuth and elevation of the Eutelsat satellites?
      • The linear polarisation planes (defined as X and Y and orthogonal to each other) of most of the Eutelsat satellites are not parallel/orthogonal to the equatorial plane. For historical reasons, the polarisation planes are inclined by an angle with respect to the equatorial plane. This angle is referenced as the polarisation skew.

        This value is of fundamental importance for the following types of antenna, whenever the polarisation alignment is performed in open loop:

        • Earth Stations on Vessels (ESVs)

        • Satcom-On-The-Move (SOTM)

        • Auto-pointing antenna

        If the pointing and polarisation alignment software of these types of antenna did not take into account the skew value, the polarisation discrimination achieved at the end of the alignment would suffer a major degradation with respect to the value which the antenna optics could theoretically yield. As a consequence, there would be a high risk of interference to other services on the opposite polarisation and the achievable performance would not be met.

        The reference X-polarisation is defined as the polarisation where the plane makes an angle of 93.535° in an anti-clockwise direction, looking towards the earth, about a reference vector with respect to a plane containing this vector and the pitch axis. The reference vector is defined as the vector from the satellite in the direction 0.21° towards west and 6.07° towards north in satellite coordinates.

        The reference Y-polarisation is defined as the polarisation where the plane is orthogonal to the X-polarisation plane and the reference vector defined above.

        In other words, the Eutelsat satellite skew is +3.535°, clockwise when looking at the satellite from the earth, from anywhere on the meridian (in the northern hemisphere) corresponding to the orbital location of the satellite.

        In the southern hemisphere the skew is +183.535°, clockwise, from anywhere on the meridian corresponding to the orbital location of the satellite.

        There are several satellites in the Eutelsat fleet using linear polarisation which are an exception.

        See the attached document on Calculation of azimuth, elevation and Polarization for non-horizontal aligned Antennas (PDF, 14 MB)

    • What type of tests are performed during an Initial Full Line-up (Digital Line-Up) with a Eutelsat Reference Station (ERS)?
    • What's the difference between an ESVA and an Initial Full Line-Up (Digital Line-up)?
      • An ESVA is necessary in order to verify the antenna performance, i.e. the off-axis radiation, the cross-polar discrimination Transmit and Receive gain, G/T, maximum EIRP capability.

        It is mandatory for antennae with a large dish size.

        Minimum requirements for the correct performance of the ESVA are that the antenna should be motorised in Azimuth and Elevation. Nevertheless, ESVA tests can be performed on any type of earth station. In the case of non-motorised antennae, necessary arrangements can be made to enable the angular read-out of the antenna.

        Once the performance has been verified and considered acceptable, a certificate of earth station performance granting indefinite and unconditioned access will be delivered to the earth station owner.

        If the performance is not acceptable, either the test must be repeated after the necessary adjustments have been made to the antenna, or some limitations will be enforced (typically on the maximum allowed transmit EIRP and also on the duration of the approval).

        To find out more, or to arrange for an ESVA test, please contact the Earth Station Approval Office:
        +33 1 53 98 46 13 or

        The Initial Full Line-Up (Digital Line-up) is strongly recommended for all earth stations transmitting digital signals (TV broadcasting, Internet backbone, SNGs etc), but it is not mandatory. This test verifies the whole earth station performance (whereas the ESVA verifies only the antenna performance), including the base-band equipment (i.e. modems, multiplexers).

        To find out more, or to arrange for the performance of a digital line-up, please contact the Earth Station Approval Office (+33 1 53 98 46 13) or the ERS (+43 59 059 3 47201).

    • Why are ESVA tests necessary?
      • ESVA tests are a very cost-efficient means to test an earth station and ensure that the antenna manufacturer specifications are being met.

        By checking the off-axis radiation, Eutelsat ensures that the earth station antenna, when transmitting, will not interfere with other carriers transmitted on satellites adjacent to the satellite being accessed.

        By checking the cross-polar performance, Eutelsat ensures that the earth station antenna will not interfere with other services carried on a transponder cross-polar to the one being accessed by the earth station.

        Moreover, the transmit antenna gain and G/T can be precisely measured. The ESVA test enables the earth station operator to calibrate the transmit and receive chains and to determine the exact earth station transmit EIRP as well as the maximum earth station EIRP capability. With the assistance of the Eutelsat Reference Station, the Station Under Test can be properly aligned and therefore prepared for the operational traffic.

    • What's the cost of an ESVA test?
      • A fee of 3000€ for up to 10hrs testing, applies to earth stations that commence a chargeable Eutelsat service within 8 months of the ESVA completion. Additional hours (and hours started) are charged at 600€. Considerably higher rates apply to stations that do not operate within Eutelsat networks.

    • What's the cost of an Initial Full Line-Up (Digital Line-Up)?
      • The test is free of charge.

    • What are the Universal Access Procedures?
    • What is the background of Azimuth Correction in conjunction with antenna pattern measurements?