Health effects mobile phone

Health Effects of Mobile Phones ?Rolf Nilsen Sept 10 2008... Why this subject is important• High exposure levels from transmitters can harm people.. • Antennas for base stations ”come cl

Health Effects of Mobile Phones ?

Rolf Nilsen Sept 10 2008

• Why this subject is important

• Who does it concern

• Symbols and definitions

• Reference levels for general public

• Result from field measurements

• References

• Conclusion

Why this subject is important

• High exposure levels from transmitters can harm people

• Antennas for base stations ”come closer and closer ” every day

• We have to be sure that the electromagnetic field from mobile phones and base stations is safe

Who does it concern

Health authority Public Operators & planners

R&D PT

Symbols and definitions

•

1 2

1 1

2

.

4

.

.

.

.

−

−

−

−

⋅

⋅

⋅

−

−

kg W

rate absorption

Specific SAR

density

power r

G

P

field H

metre ampere

Am

field E

metre per

volt Vm

density power

meters sqere

per watt

Wm

π

Reference levels for general public

Freq range E-field H-field Power density

10- 400 MHz 28 0.073 2

400-2000 ” 1.37

2-300 GHz 61 0.16 10

SAR

f= freq In MHz

f 200f

kg W

2

Results from measurements

• Measurements in Bergen 2000

• Measurements in Oslo 2001

• Measurements in large office buildings 2004

• COST259 Health effects of Mobile Phones

• WHO

• Statens Strålevern

• ICNIRP 7/1999

• Telenor Guideline on RF field

• What we know to day!

• There is no evidence on brain cancer or other diseases caused by mobile phone

• But, there are people who react negatively to

electromagnetic field even if the power density is very low