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FAQtos is an initiative from INOV – INESC Inovação/Instituto Superior Técnico, and it aims to provide relevant information on electromagnetic fields in mobile communications to the public:FAQtos Objectives

1. Basic concepts related to electromagnetic waves, exposure limits, bibliography, interesting references, etc.

2. Measurements results made by the project team in public locations in Portugal, near mobile communications base stations, and near sensitive locations like schools or hospitals.

3. Public Information actions and workshops, in order to inform the population. These are mainly done in schools and hospitals, and in cooperation with local public authorities.

The contents of this website include all the activities done by the project team, an information centre, as well as a section dedicated to the Prémio FAQtos (a contest for secondary schools students). Please note that some of the contents may not be available in English as this website is primarily directed to the Portuguese public.

In this website, we take an engineering perspective to the electromagnetic radiation exposure subject. Also, the information gathered here is focused in mobile communication systems, looking at both mobile phones and base stations of GSM and UMTS.


The development of mobile communication systems in the last few years has been exceptional, with the mobile phone penetration already surpassing 150% of the Portuguese population (3rd quarter 2010, ANACOM(in Portuguese)). Hence, the need to continuously increase capacity leads to a proliferation of base stations in almost every location, and especially in urban areas.

This has concerned the public about the possible health hazards, as a consequence of being exposed in every location, or when using a mobile phone. The public consciousness has been increased by the media, as their attention is many times focused in this issue.

An objective assessment requires quantifying, and comparing to the thresholds, the electromagnetic radiation levels that the public is being exposed to. These exposure thresholds have been recommend by international health organizations, and other important organizations. Accordingly, this website presents the measurement results performed by the project team in Portugal.

As there active research at INOV – INESC Inovação on this subject, the FAQtos team produces information documents on electromagnetic radiation from mobile communications, in a clear language for the public.

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