Posts Tagged ‘Microwave RF radiation’

How Do Cell Phones Work?

Monday, January 16th, 2012

Protection Against Cell Phone Radiation : www.emfnews.org Cell Phone Radiation Shield : www.emfnews.org Cell phones are really just radio transmitters emitting signals through radio waves. These waves are a form of electromagnetic radiation, or EMR. When the cell phone is turned on it locates itself by broadcasting a series of signals to the cell phone carrier’s closest cell phone tower. The carrier then relays that information to the nearest mobile telephone switching office. When making a call the phone sends its data to the carrier’s nearest tower, to the switching office and then to the switching office in the area code of the number being called. Once the connection is made the cell phone’s transmitter packages your voice or text data onto a second radio wave that is created for the purpose of transmitting the information. This second wave is called the Information-Carrying Radio Wave, or ICRW. When the call is received by the recipient’s switching office a connection is made through the nearest tower that connects the call with your phone. Through a processor in the phone the digital information signal is converted into an analog signal so a voice can be heard. All this occurs in an average time of four to eight seconds. Each cell phone contains its own transmitter. The purpose of the transmitter is to encode information onto a radio wave. This radio wave radiates out from the phone’s antenna evenly through space. The information being encoded, for example, could be




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