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An Examination of Radiated Ignition Interference Levels from Motor Vehicles
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English
Abstract
In view of impending changes in the British Standard concerned with ignition interference, to conform with the recent International Agreement (E.C.E. Regulation No. 10) and the probable corresponding amendment to the United Kingdom legislation, a series of road-side measurements of ignition interference radiation has been made on more than 10,000 vehicles.
From the known suppression arrangements currently used on the vehicles measured, the results have been analysed as to their efficacy in relation to present United Kingdom legislation and the E.C.E. International Regulation; reference is also made to the SAE Standard J.551a and b.
The effects of multisource ignition interference resulting from areas of high density traffic on the reception of VHF frequency-modulated radio and VHF positive-modulation TV signals are described.
Authors
Citation
Morris, D., "An Examination of Radiated Ignition Interference Levels from Motor Vehicles," SAE Technical Paper 710028, 1971, https://doi.org/10.4271/710028.Also In
References
- Recommendation 18/1 (Stockholm 1964) Appendix II 17
- “Uniform Provisions concerning the Approval of Vehicles with regard to Radio Interference Suppression.” Economic Commission for Europe Document E/ECE/324, E/ECE/TRANS/505 Addendum 9
- “The Adoption of Uniform Conditions of Approval and Reciprocal Recognition of Approval for Motor Vehicle Equipment and Parts.” Economic Commission for Europe Document E/ECE/324, E/ECE/TRANS/505 Revision 1
- “Specifications for C.I.S.P.R. Radio Interference Measuring Apparatus for the Frequency Ranges 25-300 MHz.”
- Recommendation 18/1 (Stockholm 1964) Appendix III 19