Electromagnetic Radiation Survival Guide - Step by Step Solutions - Protect Yourself & Family NOW! - Up to Date EMF Info

Author:Jonathan Halpern
Language: eng
Format: mobi
Tags: Healthy Living, Safety & First Aid, Health, Fitness & Dieting, Personal Health
Published: 2014-01-02T07:00:00+00:00

High or low SAR – does it really matter?

SAR stands for “Specific Absorption Rate”. This number is a measure of the rate at which electromagnetic radiation is absorbed by our body tissues when we are exposed to radio frequency (RF) electromagnetic radiation. Theoretically using a phone with a lower SAR implies a lower EMR exposure per time unit. However, the SAR number represents lab test results performed under ideal conditions. In reality various factors may change the picture dramatically and a lower SAR phone could sometimes emit more radiation than a higher SAR phone. How is this possible? Well – let’s take a simple example: Some Smartphones have a very sophisticated adaptive transmission power control that monitors and modifies the transmitted radiation level according to reception conditions. If reception is very good (maximum number of bars on the reception display) it automatically reduces transmission power level to minimum. On the other hand if reception is very poor, the phone will adapt accordingly and use a much higher transmission power (up to a 1000 times higher than the minimum level !!!). Older more “primitive” phones may not have adaptive transmission power technology built in and consequently they may always transmit at the maximum radiation level.

As explained in detail in a previous section, the way you use the phone (e.g. SMS, using speakerphone, using an air-tube headset etc.) can have a huge impact on your radiation exposure, and is by far more significant than the phone’s SAR rating. A technology naive person may take a low SAR number as an all clear sign and consequently end up with very high cumulative electromagnetic radiation (EMR) exposure.

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