RF safety at base station sites

Contents

1 Purpose and scope. 2
2 Introduction. . 2
3 Basic information . 3
3.1 EMF limits for workers and the general public . 3
3.1.1 SAR limits. 3
3.1.2 Power density limits . 4
3.2 Compliance distance. 4
3.3 Compliance boundary/exclusion zone. 4
3.4 Averaging time. 5
3.5 Field monitor. 5
4 Safe working practices at a base station or antenna site. 6
4.1 Safety distance/compliance boundary. 6
4.2 Field monitor. 6
4.3 Shut-down procedures . 6
4.4 Cabling and waveguides. 7
4.5 Suspected over-exposures. 7
5 Medical implants. 7
6 How to recognise potentially non-compliant areas on a base station site. 7
6.1 Signs, notices, labels, etc.. 7
6.2 Types of antennas used . 9
6.2.1 Omni-directional coverage. 8
6.2.2 Sector coverage. 8
6.2.3 Antenna farms (or clusters) . 8
6.2.4 Radio relay (also known as fixed point-to-point link). 8
6.2.5 Accessible areas in which EMF limits are not exceeded. 9
7 Reference. 9

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