# Commission Directive 2004/104/EC of 14 October 2004 adapting to technical progress Council Directive 72/245/EEC relating to the radio interference (electromagnetic compatibility) of vehicles and amending Directive 70/156/EEC on the approximation of the laws of the Member States relating to the type-approval of motor vehicles and their trailers (Text with EEA relevance), Division 3.1: Frequency range, dwell times, polarisation


The vehicle shall be exposed to electromagnetic radiation in the 20 to 2 000 MHz frequency ranges in vertical polarisation.
The test signal modulation shall be:
AM, with 1 kHz modulation and 80 % modulation depth in the 20-800 MHz frequency range, and
PM, t on 577 μs, period 4 600 μs in the 800-2 000 MHz frequency range,
if not otherwise agreed between technical service and vehicle manufacturer.
Frequency step size and dwell time shall be chosen according to ISO DIS 11451-1:2003.

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Source: https://www.legislation.gov.uk/eudr/2004/104/attachment/16/division/division/3./division/3.1. (the official version)
Page: https://openlegislation.uk/eu-directive-2004-104/attachment-16/division/division-3./division-3.1.
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.