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An engineering discussion paper on spectrum allocations for studio to transmitter links
Radio Spectrum Policy and Planning
Resources and Networks Branch
December 2004
ISBN 0-478-26397-0
© Crown copyright
Permission to reproduce: the copyright owner authorises reproduction of this work, in whole or in part, so long as no charge is made for the supply of copies, and the integrity and attribution of the work as a publication of the Ministry of Economic Development is not interfered with in any way.
Executive Brief
This paper studies the current trends in studio to transmitter link spectrum usage and considers how these developments may be used to help accommodate new demands while maintaining the integrity of the current networks.
2. Introduction
Studio to Transmitter Links (STLs) are used to transport audio programme material from a studio or other source to a broadcast transmitter site. They are generally one way wide band fixed links requiring a high quality of service and do not easily share spectrum with other services.
4. Allocations at 900MHz
The majority of countries have some spectrum allocated to STLs at 900MHz. These frequencies provide a useful compromise between bandwidth, path length and economical equipment costs but spare channels are now becoming scarce in high usage areas. This congestion is being experienced in many countries including the main centres of New Zealand.
5. The Issues
The anticipated demand for 400MHz STL licences appears to be able to be met from the current spectrum allocation for STLs. Questions 1 to 8.
6. The Next Steps
The Ministry plans to arrange forums to will liaise with the broadcasting industry and to ensure the issues associated with STLs are well understood. These forums will be held before the closing date for submissions on this paper.
7. Submission Information
If you wish to respond to the questions posed in this paper please provide your comments by Friday, 11 March 2005.
