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Cumulative Effect of Radiated Emissions from Metallic Data Distribution Systems on Radio Based Services


A report for the Radiocommunications Agency by York EMC Services Ltd, University of York

Document number R/00/026
Project number 1191
Author: Dr. D W Welsh, Dr. I D Flintoft, Dr A D Papatsoris


Executive Summary

Recent developments in broadband data access methods over existing telephone or mains wiring will cause unintentional RF emissions which may adversely affect the established radio noise floor. This report considers the effects due to cumulative propagation of many such sources on the established radio noise floor. It does not consider possible interference due to near field effects. The propagation mechanisms considered are groundwave and skywave. Figure 1.1 shows the technologies, propagation methods and frequencies that have been considered.

figure 1.1

Figure 1.1: Figure showing frequency bands, propagation methods and major technologies
considered in this report



  pdf logo Complete report (1,588 KB) and appendix (1,145 KB) in .pdf.
  Word logo Complete report and appendix zip file ZIP Logo Word (3,358 KB).
  * Powerpoint presentation (1,286 KB).
  Word logo User manual for the active Excel spreadsheet used to calculate cumulative groundwave emissions from the deployment of xDSL services. Word (36 KB).
  * Excel speadsheet ADSL (197 KB).
  * Excel speadsheet VDSL (157 KB).

Extension To Contract "Accumulated Emissions From Metallic Data Delivery Systems" To Verify The Angle Of Radiation Of ADSL Systems And Their Potential Effect On Aeronautical Services
Word logo (697 Kb) pdf logo (698KB)


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June 2000

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