[tengwa]

Hi i wonder if anyone knows why the E51 phone has so much higher SAR value than NOKIAS other models. I also wonder if its meassured on gsm or w-lan.

[serioussam2]

the sar level is hight when wi-fi is on !

[velimir]

I think You can get most of the information over here:

http://sar.nokia.com/sar/index.jsp

I think E51 is 1.40 ... but for details go there.

hope this helps ...

[6280]

Wow! 1.40!, Now that is alot.

People were complaining about the 6120c values but this is worse.

I wonder why Nokia is doing this, Definately needs to be lowered in future models.

[danadina9]

...the highest level is 1.40...like the other guy said when Wi-Fi is on...etc...

[tengwa]

do you have any idea what the sar level is when wi-fi isn't on?

[nitemare]

I don't know how much of a difference wiFi makes. My E65 is much lower than the E51- As I use the phone between 1-3 hours a day, I'm keen to have a useful phone with as little SAR as I can get. Such a high value is the only reason I didn't go for the E51. It's a shame!

The E65 also has WiFi, though.

[megadodo]

If you are concerned about SAR use a wired headset to make a call.

[likeitlikethat]

yes I am just wondering if these people know something extraordinary about SAR value 1.4 that I don't know, they seem worried or scared

[tao980]

Don't worry people! SAR is only half the truth! There is a german magazine specialized on mobile phones, called Connect, in which when they are testing a mobile phone, they are also measuring its effective emission power. The SAR value divided by the effective emission power is called emission factor, and this quantity offers information about the resources a mobile phone has available to communicate with the nearest tower. You should be looking for phones with low values for both SAR and emission factor. For example, E51 has a SAR of 1.4 with an emission factor of 6.4, whilst 6120 classic has a SAR of 1.18 and an emission factor of 9.59. For more info, you can check yourself the test values on the magazine's website (if you speak german, if not look for the words Strahlungs-Faktor). SE phones have quite large emission factors, for instance W610i has 14.04! Nokia 6267 has the lowest SAR and emission factors: SAR = 0.31, emission factor = 1.42. That's the right phone for people who want to minimize the effect of electromagnetic radiation.

Message Edited by tao980 on 04-Jan-2008 01:09 PM

[likeitlikethat]

so what is the effect of electromagnetic radiation in these cell phones? lets get straight to the point
you seem to know something that should be revealed

Message Edited by likeitlikethat on 04-Jan-2008 07:28 PM

[tao980]

Only heating from cell phones. The penetration depth of the electromagnetic field at the frequencies employed by mobile phones is less than 1 cm (with the phone against the head). Its energy produces heat, but this heat can be handled by the body through the thermoregulatory processes. At least, this is the official knowledge at present. But for those who are afraid, they should look for phones with low SAR and low emission factor. What I am trying to say is that judging by SAR alone is not enough.

Message Edited by tao980 on 04-Jan-2008 02:00 PM

[madi123]

If you guys studied some physics then you should know that such a high SAR value is emitted when all electromagnetic communication features are on.

High SAR = GSM/WCDMA + Bluetooth + 3G/3.5G/EDGE/GPRS/WiFi.

Thus if you are concerned about high SAR value, then Turn off all unnecessary emitors. In my case:

SAR value = GSM only

That means that I'm not using/turning off all connectivity features during the conversation.

You also should know that SAR value during the connection establishment is higher than during the conversation, hence always wait a bit after dialing before putting the phone near your ears.

For those people who concerned with radiation must know that it significantly reduces when you increase distance between phone and you. Today many phone manufacturers put the antennas near the microphone to increase the distance to your brains and get lower SAR value.

In E51 all Antennas were put at the upper part of the phone, where it is not shielded by the metal cover. Hence it is just near your ear, that is platform design that brings higher SAR value. Phone is also thinner, hence transmitting antenna is closer than in a thicker phones.

In my opinion Phones with Lower SAR value have more chance to have bad reception, since the signal power will be lower. Usually all Nokia phones have outstanding Reception and E51 is one of them.

So, just think about that and use handsfree.

[likeitlikethat]

the point I am getting at is there is nothing to show a "high" SAR of 1.4 is a problem for your brains or other. Agree the higher SAR can mean better signal going out

[tengwa]

so the cellphone isn't always sending on 1.4 sar? you mean that the capasity is higher but but if the cellphone has good conection the sar level is not higher than any other phone?

[tengwa]

in that cace a more inportant value of sar would be when wifi is turned off and the conection is good... am i right?

Message Edited by tengwa on 05-Jan-2008 03:54 PM

[madi123]

Just to clarify everything read this:

h__p://home.relline.ru/~maxstorm/nokia51/1.pdf
h__p://home.relline.ru/~maxstorm/nokia51/GSM.pdf
h__p://home.relline.ru/~maxstorm/nokia51/BT_WIFI.pdf

This test results reveal the usual SAR values for different modes and show were all antennas are located. Usual SAR value for the 3-slot GPRS1900 data mode is 0.96 W/kg (+12% from tested for Drift. Position: Left, Cheek).

From this test I can suggest that during the convesation with 1-slot GSM1900 (typical for T-mobile) SAR value will be much lower than 0.96. Of course, if you are not using WiFi at the same time.

My suggestion: Keep WiFi turned off during the GSM or WCDMA conversation.

Cheers.

[madi123]

Couldn't able to edit my previous post.

Usual SAR value for the Nokia E51 in GSM850 mode is 0.622 W/kg (Position: Left, Cheek).
Of course, if you are not using WiFi or any packet data transmission at the same time.

[likeitlikethat]

and the report shows what I know already, the wi-fi transmit power is the lowest of all the transmit modes (only 1/10 of a watt) in the phone, and that wi-fi transmit power is adjustable in the phone to even a lower level if you choose. Any other trasmit modes, GSM, WCDMA, use far more transmit power (so higher SAR) than the wi-fi.
the post of serioussam2 (which started this conversation of wi-fi SAR) is completely false, inaccurate, and baseless

Message Edited by likeitlikethat on 06-Jan-2008 10:40 AM

[nitemare]

Does that mean you can choose how your phone works- 3G or GSM?

Therefore, is there an option which allows you to turn off 3G reception and so minimise the SAR?