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Licensing & Co-ordination |
1. Frequency
Co-ordination
2. Satellite Co-ordination and Networks
3. Earth Station Co-ordination
Frequency band allocation for earth station transmissions within the UK comply with ITU Region 1 requirements (Article 8) , and are detailed in the RA365 UK Table of Radio Frequency Allocations 3600 MHz - 30 GHz (December 1999).
The principal transmission uplink bands for commercial satellite earth station equipment in the UK are :
- Ku band proprietary uplink bands at 14,0 -14.25 GHz and
- Ku shared bands at 14,25 - 14,5 GHz.
- Ka band uplink transmissions in the range 29,5 GHz to 30 GHz.
- Ka shared bands at 27,5 GHz to 29,5 GHz
- Only Permanent earth stations are allowed to transmit in the C band (5,725- 5,85 GHz and 5,85 -7,075 GHz) within the UK.
Note : Commercial transmissions in C band are allowed only from permanent earth stations; C band transmissions are not allowed under the normal VSAT licence regime.
The transponder frequencies allotted to a commercial earth station by the satellite operator must be within the bands described above.
The designation of Emissions from earth stations must be characterised according to Article 4 of ITU Radio Regulations. The maximum EIRP towards the horizon allowed to earth stations is 79 dBW in a 1MHz bandwidth. (Article 28 No 2545).
Issues on the possible future allocation of frequency bands are covered in the Appendices of the UK Spectrum Strategy document.
The Radiocommunications Agency represents the UK administration at international fora and WRC conferences. It has requirements placed on it by the ITU as to the notification and recording of frequency assignments, co-ordination and operation of all radio networks.
The co-ordination requirements for satellite networks that operate in a shared band are determined by the procedure of Appendix 29 of the ITU Radio Regulations, whereas broadcasting networks are covered by Appendix 30 and 30A.
Procedures of the United Kingdom Administration in Relation to Satellite Networks are described in RA301 (April 1996).
Co-ordination is a mandatory requirement (From ITU Radio Regulations RR 1107 and 1505) for all bands in which services are shared in the region 1 GHz -40 GHz.
In the UK the Fixed Satellite Service is allocated co-primary status with (typically) terrestrial Fixed Service links. Permanent earth stations at a fixed location require co-ordination with Fixed Service terrestrial links in accordance with ITU Articles 11-13. The required co-ordination area (as defined by ITU Appendix 28) may extend several hundred kilometres and may also require international co-ordination.
The frequency range 14,25 to 14,5 GHz is generally not applicable to VSATs as it is a shared band that requires detailed national co-ordination.
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