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  Preventing Cellular Use in Restricted Areas

BEMI - Bättre Elmiljö

BEMI - Better Electromagnetic Enviroment

http://www.bemi.se

Radiation from popular cellular phones

The cellular phone has to emit radiofrequency energy at levels high enough to reach base stations (antenna towers) tens of kilometers away. Since the energy is emitted as a microwave in the direct vicinity of the users head there are concerns about the safety of this technology. There are reports from cell studies as well as animal studies that are most worrying. Among other effects the double DNA breakage is among the fundamental och disturbing findings. This may indicate that there may be a significant risk of developing cancer tumours, foremost brain tumours in the user of cellular (mobile) phones.

The design of the cellular phones casing, electronic and foremost the antenna construction gives widely different near and far fields around the phone. It is at present time not completely clear what parameters of the field gives biological effects, however as an intermediate cautionary step one can use the simple measure of absorbed radiated energy into the tissue of the head. This is given as a SAR - Specific Absorption Ratio and is measured in watts per kilogram. This may not be a true measure of the biological hazard from the phone but may be used as an indication of the energy recieved into the head. See it as prudent avoidance.

Niels Kuster, a radiation expert at the Swiss Federal Institute of Technology, has developed a new measurement technique to measure cell-phone EMR towards the user's head. He measured 16 popular cell phone models, and published the results in the Swiss Consumer Report magazine. The table below was initiated based upon data from his study:

* Additional new phone models added from other sources 990611
* Additional phone models added 991004, source Aftonbladet 991004
* Additional source http://www.sardata.com/sardata.htm 000808  

Manufacturer

Model

SAR (W/kg)

Motorola

Star Tac 130

0.10

Nokia

Nokia 8810

0.22

Hagenuk

Global

0.28

Motorola

StarTac

0.33

Motorola

i1000plus

0.35

Mitsubishi

Trium Galaxy G-130

0.37

Motorola

Star Tac 130 (fixed antenna)

0.38

Sony

CM-DX 1000

0.41

Ericsson

SH888

0.42

Sony

CMD-C1

0.55

Ericsson

I8888 World

0.60

Nokia

6150

0.69

Motorola

CD 930

0.70

Siemens

C25

0.72

Nokia

8110i

0.73

Audiovox

HGP2000E

0.75

Ericsson

S828

0.77

Motorola

d160

0.81

Nokia

6110

0.87

Ericsson

A1018s

0.88

Sony

CMD-Z1

0.88

Ericsson

SH888

0.90

Ericsson

GF788

0.91

Trium

Galaxy

0.93

Motorola

cd 930

0.94

Panasonic

EB-G520

0.95

Ericsson

GH688

0.95

Audiovox

PCX-1000XL

0.98

Panasonic

EB G500

0.98

Audiovox

CDM 4000

1.00

Motorola

GSM 1900

1.00

Sharp

TQ G700

1.01

Philips

Genie

1.05

Nokia

1611

1.06

Philips

Diga

1.06

Philips

Savy

1.11

Bosch

GSM 909

1.13

Nokia

3210

1.14

Sanyo

SCP-400

1.16

Trium

Galaxy (fixed antenna)

1.16

Motorola

cd 920

1.17

Nokia

3110

1.24

Ascom

Axento

1.25

Motorola

Startac (TDMA)

1.25

Motorola

I500

1.25

Philips

Genie 1800

1.26

Nokia

6161

1.27

Samsung

SCH6100

1.27

LG

Info & Com

1.29

Mitsubishi

T250

1.29

Audiovox

9000

1.30

Bosch

M-Com 906

1.32

Ericsson

DH-668

1.32

Ascom

Elisto

1.33

Denso

TP 2200

1.33

Siemens

C25

1.33

Nokia

7160

1.33

Qualcomm

QCP-2760

1.33

Ericsson

A1228D

1.35

Motorola

Startac dualmode

1.36

Denso

Touchpoint

1.37

Sanyo

SCP-310

1.37

Neopoint

NP-1000

1.38

Samsung

SCH3500

1.38

Sanyo

SCP-4500

1.38

Nokia

8860

1.39

Sony

CMB-1200,2200,3200

1.39

Ericsson

T18

1.40

Ericsson

R280

1.41

Philips

Genie 1800 (fixed antenna)

1.41

Qualcomm

1960

1.41

Nokia

6162

1.42

Nokia

6185

1.42

Sanyo

SCP4000

1.44

Audivox

3300

1.45

Nokia

5160

1.45

Mitsubishi

T200

1.47

Samsung

SCH8500

1.49

Ericsson

LX-588

1.51

Motorola

SC-3160

1.52

Philips

Genie 900

1.52

Ericsson

KF788

1.56

Motorola

v3688

1.58

Bosch

GSM908

1.59

Philips

Genie 900 (fixed antenna)

2.67

SAR is given as Cenelec value for average EMR exposure of user's head, measured in Watt per kg of user's body weight. (A low number means less radiated energy into the users head).

The fact that Ericsson SH888 is given two different SAR values reflects the uncertainty how SAR should be measured. The same radiation will give different SAR values depending on calculation or measurement method, whether the ear is a lossy one or just a distancer, and if the SAR is calculated over 1 g, 10 g or 1 kg of tissue (and also the shape that region is given, eg. a cube).

Note that Star Tac exists in various models, some have low SAR and some don´t. Also note that despite the low SAR for Star Tac many people complain of headaches or other sympthoms when using those (just another indication that SAR may NOT be the best way of describing health effects from cellular phones).

Clas Tegenfeldt, 000808, 991004, 990611, 980215

 http://www.bemi.se/founder/clips/cellularSAR.html

Also by Clas Tegenfeldt, see: 

"Measure Fields - Truth or what?"
http://www.bemi.se/founder/measure/truthorwhat.html

Also see Cellular-News.com for up-to-date SARS numbers at:
http://www.cellular-news.com/cell-phones/sar-ratings.php 

Copyright 2000-2008 Cell Block Technologies Inc. All rights reserved.    Last updated on Wednesday, July 09, 2008
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