This document discusses mobile phone radiation and electromagnetic fields. It provides typical transmission power values for different technologies and discusses specific absorption rate (SAR) exposure measurements. It summarizes several research studies on mobile phone usage and brain cancer risk. It also outlines precautionary exposure reduction measures and introduces Tawkon as a unique approach to reduce exposure without reducing phone usage.

1. Mobile Phone Radiation
Amit Lubovsky, Co-Founder tawkon
amit@tawkon.com @amitlubovsky
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2. Mobile Phone Radiation
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3. MobileRadiation
Electromagnetic
Phones – Basic Facts
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4. Typical Transmission Power Values
Typical Transmission Power Values
dBm
Power Notes
level
60 dBm 1 kW = 1000 W Typical RF power of microwave oven elements
Maximum output from a UMTS/3G mobile phone
33 dBm 2W
Maximum output from a GSM850/900 mobile phone
30 dBm 1 W = 1000 mW Maximum output from a GSM1800/1900 mobile phone
15 dBm 32 mW Typical WiFi transmission power in laptops.
0 dBm 1.0 mW Bluetooth standard radio, 1 m range
Typical maximum received signal power (−10 to −30 dBm) of
−10 dBm 100 µW
wireless network
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5. SAR
Exposure measurements
Specific Absorption Rate
• Electromagnetic radiation (W) that is absorbed by
the human body (kg)
• 1.6 W/kg (ICNIRP, adopted 1996)
• Determined using a human head "phantom”
• SAR is a "worst-case" scenario
• Lower SAR = less exposure
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6. SAR Diversity
Cellular: 1.19
Wi-Fi: 0.52
1.19
1.39
Cellular: 1.39
0.58
Wi-Fi: 0.12
0.52
0.12
Cellular: 0.58
Wi-Fi: 0.08
0.08
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7. Research
Interphone (WHO)
• Published June 2010 - 13 countries, 10 years
• Mobile phone usage of >30 minutes a day for 10 years ( heavy users ) have a greater risk of developing
brain cancer (40% - 200%)
Cosmos
• World Health Organization (WHO) and the UK Health Protection Agency (HPA)
• Started 2010, will follow ~300,000 adult cell phone users in Europe for 20 to 30 years
Mobi-Kids
• International multi-center study involving 14 European and non-European countries
• Exposure to cell phone radiation (and other RF sources) and brain cancer in young people
• Started 2010, ages 10 to 24 years
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8. WHO Announcement – May 31st 2011
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9. Exposure Measurement
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10. Exposure measurements
Precautionary Measures
Source: EWG (Environmental Working Group)
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11. tawkon is a unique approach to handling public concerns
of mobile radiation
reduce exposure… without reducing usage
Drive Safely Eat Wisely Talk Responsibly
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12. “the concept”
Over 90% of the time, Less than 10% of the time,
radiation exposure is low radiation exposure is high
1 min in “red” equals 5 hours in “green”
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13. How does it work…?
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14. How it all started
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15. Let People
See Radiation
5
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16. Apple…
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17. Pre Call
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18. Take Action
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19. Avoid Cumulative
Exposure
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20. Help Others
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21. Now keep talking...
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