Mobile phone mast in a residential area. Mobile telephones send and receive voice, text and image data as low-intensity microwaves. The signals are re

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Mobile phone mast in a residential area. Mobile telephones send and receive voice, text and image data as low-intensity microwaves. The signals are relayed through a network of antennas that are mounted on masts. The masts are typically 15 metres high with antennas that have a range of a few hundred metres in urban areas. Hundreds of masts and smaller antennas are required to provide uninterrupted coverage across a network. There are concerns about the effects on humans of microwave radiation from mobile phones and antennas. Photographed in Andalucia, Spain, in October 2004.

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Size: 4245px × 4142px
Photo credit: © CARLOS DOMINGUEZ/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 2004, 21st, andalucia, century, city, communication, communications, controversial, controversy, danger, engineering, europe, european, hazard, industrial, industry, mast, microwave, mobile, phone, radiation, residential, signal, spain, spanish, street, structure, technological, technology, telecommunication, telecommunications, telephone, town