Table of Contents - K.61 (10/2025) - Guidance on measurement and numerical prediction of electromagnetic fields for compliance with human exposure limits for telecommunication installations

1	Scope
2	References
3	Definitions
	3.1	Terms defined elsewhere
	3.2	Terms defined in this Recommendation
4	Abbreviations and acronyms
5	Conventions
6	General principles
	6.1	Quantities being measured
	6.2	Typical situations
7	Technical considerations
	7.1	Averaging
	7.2	Quantities
	7.3	Field regions
	7.4	Shadowing and scattering
	7.5	Variability of the source
8	Measurements
	8.1	Measurement instrumentation
	8.2	Evaluation of measurement uncertainties
	8.3	Probe selection
	8.4	Procedures
	8.5	Safety precautions
	8.6	Field region
	8.7	Multiple sources
	8.8	Time and spatial variability
9	Compliance with the limit: measurement results processing
	9.1	Identification of individual sources
	9.2	Intermittent sources
	9.3	Base stations for mobile communication systems
Appendix I – Calculation methods
	I.1	General
	I.2	Methods description
	I.3	Other near-field models
	I.4	Practical problems
Appendix II – Identification and measurement of the main source of radiation
	II.1	Treatment of non-conformities – Exceeding the exposure limits
	II.2	Confirmation measurement
Bibliography
Introduction
This Recommendation helps telecommunication operators to verify compliance with radio frequency electromagnetic field (RF-EMF) exposure standards promulgated by local or national authorities. Guidance on the need to perform an exposure assessment for a telecommunication installation, such as a base station, is provided in [ITUT K.52]. Indications on the process for putting a telecommunication installation, such as a base station into operation, are provided in [ITU-T K.100]. The assessment is based on the evaluation of the RF-EMF exposure and on accessibility considerations. The RF-EMF exposure evaluation can be carried out by measurement or numerical prediction.
This Recommendation defines tools, methods and procedures that can be used to achieve a compliance assessment. The compliance with RF-EMF exposure standards can be achieved by measurement of electromagnetic field strength, provided that calibrated instruments are used and measurement uncertainty is correctly expressed.