Minggu, 23 Oktober 2011

12 steps to prevent cell phone radiation

  1. Limit phone calls to those that are absolutely necessary, and restrict these to 6 minutes maximum, which is the time the body needs to adjust. Use a hands-free kit and hold the phone more than 20/30cm away from your body in order to limit the impact of radiation on yourself.
  2. Do not carry your phone directly on your body, even on stand-by, and do not use it less than one metre away from another person, in order to reduce the effect of ‘passive’ radiation. .
  3. Those under 15 should not use a mobile phone at all because they are still growing. With their lighter body weight the radiation is more damaging, especially to the brain, weakening the Blood-Brain Barrier (BBB), and to the reproductive organs/ovaries, etc. .

Kamis, 20 Oktober 2011

Read Your Manual Book !!

Read your manual
Leno's bill, however, doesn't makes such claims. And that alone could give it a good chance at becoming law. He avoided any reference to a phone's specific absorption rate (SAR), which is wise considering (among other things) that a SAR can change constantly when you're on a call. Instead, and this is where it gets interesting, he wants to amend the bill so that the RF notice put on a phone's packaging will match the relevant section in the user manual. So as he put it, "We'll just lift the wording in the manual and put it on the box." Repetitive? Perhaps, but it certainly wouldn't be misleading.

Of course that got me thinking about what the manuals actually say. I've combed through hundred of user manuals to find the SAR for CNET's cell phone radiation charts, but I admit that I haven't read every word. And in all seriousness, who has? So to offer a picture of what a cell phone box could look like in California if the bill passes, I collected user manuals from the major handset manufacturers. And the results might surprise you. 

Though each manufacturer varies the wording, all advise that your phone could exceed the FCC's 1.6-watt-per-kilogram SAR limit (the measure by which the FCC considers phones safe) if you don't hold it at a short distance from your body while it is transmitting. Some are more detailed than others, and some stray into marketing pitch territory by advising you to use only manufacturer-approved belt clips (without any metal, of course), but you'll find such a warning for almost every phone sold in the United States. So while you may laugh at the guy carrying his phone on a belt clip rather than in his pocket (I certainly have), perhaps he's onto something. 

The recommended distance isn't arbitrary, but instead comes from the actual distance used during the FCC testing process. Yet, it's still interesting to see how different manufacturers approach RF exposure. All point out (accurately) that no studies have proven that cell phones are dangerous, and most offer tips for reducing exposure, such as limiting use, not touching the antenna, and using a headset. BlackBerry goes further and adds that you should use the phone only where you get a good signal (so that your handset isn't working so hard to reach the tower) and it advises you to "use hands-free operation if it is available and keep the BlackBerry device at least 0.98 inch (25mm) from your body (including the lower abdomen of pregnant women and teenagers)." Samsung takes a different twist as well by mentioning the inconclusive findings of the Interphone study and by explaining that cell phones emit nonionizing radiation (which, unlike ionizing radiation, does not break chemical bonds and mutate DNA).

Here are the relevant passages for a selection of recent phones that CNET has reviewed. If you'd like to research your own handset, check either your user manual or the accompanying health and safety pamphlet.
RIM BlackBerry Curve 9330
"To maintain compliance with FCC RF exposure guidelines when you carry the BlackBerry device on your body, use only accessories equipped with an integrated belt clip that are supplied or approved by Research in Motion. Use of accessories that are not expressly approved by RIM may violate FCC exposure guidelines and might void any warranty applicable to the BlackBerry device. If you do not use a body-worn accessory equipped with an integrated belt clip supplied or approved by RIM when you carry your BlackBerry device, keep the BlackBerry device at least 0.98 inch (25mm) from your body when the BlackBerry device is transmitting. When using any data feature of the BlackBerry device, with or without a USB cable, hold the BlackBerry device at least 0.98 inch (25mm) away from your body."

From page 24 of the Safety and Product Information pamphlet for the RIM BlackBerry Curve 9330.

Minggu, 16 Oktober 2011

20 Ponsel Radiasi Terendah di USA

20 Daftar Merk/Seri Ponsel di USA yang memiliki radiasi SAR terendah

Manufacturer and modelSAR level(digital)
1 Beyond E-Tech Duet D8 0.109
2 Samsung Eternity SGH-A867 0.194
3 Samsung Blue Earth 0.196
4 Samsung SGH-G800 0.23
5 Samsung Soul 0.24
6 Samsung Impression SGH-A877 0.27
7 Samsung Innov8 0.287
8 Beyond E-Tech Duet D888 0.32
9 Samsung SGH-T229 0.383
10 Samsung SGH-A167 0.452
11 Samsung SGH-i450 0.457
12 Samsung Rugby SGH-A837 (AT&T) 0.46
13 Samsung Propel Pro 0.473
14 Samsung Gravity 0.487
15 HTC Imagio (Verizon Wireless) 0.498
16 Samsung Alias 2 SCH-U750 0.541
17 Samsung Gravity 2 0.547
18 Motorola Karma QA1 0.55
19 AT&T Quickfire 0.563
20 Sonim XP1 0.6
Sumber: CNET

20 Ponsel Radiasi Tinggi di USA

20 Daftar Merk/Seri Ponsel di USA yang memiliki radiasi SAR tertinggi

Rank Model SAR (digital)
1 Motorola Bravo 1.59
2 Motorola Droid 2 Global 1.58
3 Sony Ericsson Satio (Idou) 1.56
4 Sony Ericsson Xperia X10 Mini Pro 1.55
4a Kyocera Jax S1300 1.55
6 Motorola i335 1.53
7 Nokia Astound 1.53
8 Motorola Defy 1.52
8a Motorola Grasp 1.52
8b ZTE Salute 1.52
11 LG Rumor 2 1.51
12 Motorola Droid 1.49
12a Sanyo Vero 1.49
12b Motorola Droid 2 1.49
15 HTC Desire 1.48
15a HTC Trophy 1.48
17 LG Chocolate Touch 1.47
17a Motorola Atrix 4G 1.47
19 Kyocera Wild Card M1000 1.46
20 Kyocera X-tc 1.45
Sumber: CNET

Rabu, 05 Oktober 2011

Mobile Phone Radiation and Health

The effect of mobile phone radiation on human health is the subject of recent interest and study, as a result of the enormous increase in mobile phone usage throughout the world (as of June 2009, there were more than 4.3 billion users worldwide[1]). Mobile phones use electromagnetic radiation in the microwave range. Other digital wireless systems, such as data communication networks, produce similar radiation.
The WHO has classified mobile phone radiation on the IARC scale into Group 2B - possibly carcinogenic. That means that there "could be some risk" of carcinogenicity, so additional research into the long-term, heavy use of mobile phones needs to be conducted.[2] Some national radiation advisory authorities[3] have recommended measures to minimize exposure to their citizens as a precautionary approach.

ElectroMagnetic Fields (EMF)

Electromagnetic fields of all frequencies represent one of the most common and fastest growing environmental influences, about which anxiety and speculation are spreading. All populations are now exposed to varying degrees of EMF, and the levels will continue to increase as technology advances.
As part of its Charter to protect public health and in response to public concern, the World Health Organization (WHO) established the International EMF Project in 1996 to assess the scientific evidence of possible health effects of EMF in the frequency range from 0 to 300 GHz.
The EMF Project is open to broad participation

The EMF Project is open to any WHO Member State government, i.e. department of health, or representatives of other national institutions concerned with radiation protection. The project is fully funded by participating countries and agencies.
Further information
  • for contacts and information regarding EMF related matters in your country, click here.

About electromagnetic fields

Electromagnetic spectrum

Electromagnetic radiation has been around since the birth of the universe; light is its most familiar form. Electric and magnetic fields are part of the spectrum of electromagnetic radiation which extends from static electric and magnetic fields, through radiofrequency and infrared radiation, to X-rays.
Source: http://www.who.int/peh-emf/en/