Tuesday, January 31, 2012

How to check SAR Values of Mobiles (Samsung + Nokia + Motorola + LG + Sony Erricsson)

What is SAR ?

Radio frequency (RF) exposure from a mobile phone is
typically localised depending on where the phone is placed. Exposure
guidelines for mobile phones specify the maximum level of RF energy that
can be absorbed by the head or body with a large safety margin. 

The
unit of measurement for the amount of RF energy absorbed by the body is
the Specific Absorption Rate or SAR. Measurement of SAR is used for
compliance of mobile phones, walkie talkies, or when working very close
to transmitting antennas. SAR is expressed in units of watts per
kilogram (W/kg).

The maximum SAR level for a mobile phone used against the head or body in accordance with the ICNIRP International guidelines
is 2W/kg (using 10gm averaging mass). Mobile phones are tested for SAR
compliance at the highest certified power level in laboratory
conditions.

Note:
The international standard IEC62209.2 specifying the procedures for
body worn SAR testing is scheduled for publication in 2009. Prior to
this, manufacturers when testing for body worn SAR used the procedures
specified by the US FCC. 

Some countries, such as Bolivia,Canada, South Korea and the US, have adopted slightly different localized SAR limits for the head and trunk - 1.6 W/kg (using 1gm average mass). 

Some mobile phones are designed to have a small minimum separation from the body when in use, typically 15 – 25mm depending on the phone. This is to ensure the phone operates more efficiently and also meets the SAR requirements.

A mobile phone can always be used up against the head without separation. This is because the antenna in the phone is designed to be far enough away from the head to meet the SAR requirements. 

To know more please visit http://www.emfexplained.info/?ID=25584

Use the below links to find the SAR Values of your mobile phone models.

1. To Know the SAR Values of Samsung Mobiles Go There   

2. To Know the SAR Values of LG Mobiles Go There  

3. To Know the SAR Values of Motorola Mobiles Go There 

4. To Know the SAR Values of Nokia Mobiles Go There 

5. To know the SAR Values of other Brand Mobiles Go there

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