Radiofrequency Energy Sources (Radiation Meters) Radiofrequency Energy Sources

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Radiofrequency Energy Sources (Radiation Meters)

The most common exposures to radiofrequency energy are from telecommunications devices and equipment. In the United States, cell phones currently operate in a frequency range of about 1,800 to 2,200 megahertz (MHz) (6). In this range, the electromagnetic radiation produced is in the form of non-ionizing radiofrequency energy.

Cordless phones (phones that have a base unit connected to the telephone wiring in a house) often operate at radio frequencies similar to those of cell phones; however, since cordless phones have a limited range and require a nearby base, their signals are generally much less powerful than those of cell phones.

Among other radiofrequency energy sources, AM/FM radios and VHF/UHF televisions operate at lower radio frequencies than cell phones, whereas sources such as radar, satellite stations, magnetic resonance imaging (MRI) devices, industrial equipment, and microwave ovens operate at somewhat higher radio frequencies .

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