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Wi-fi worry/fears?

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WR450_geezer
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PostPosted: 16:29 - 13 Dec 2006    Post subject: Wi-fi worry/fears? Reply with quote

"Some schools are removing wi-fi networks after complaints from parents that their children suffer headaches. In what sounds like a re-run of mobile phone radiation panic, is there evidence for harm?

Sitting too close to the TV. Standing in front of the microwave. Spending too long on the mobile. Living under a pylon, or next to a phone mast. We've always worried about what the technology around us might do to our bodies.

Now, wi-fi is rolling out from the humble coffee shop hotspot to create swathes of wireless networks in towns and cities.

But some are concerned that we don't know enough about the health effects of electromagnetic radiation - the radio waves that allow the computer network to transmit (along with longwave, FM and TV and phone frequencies). "

From https://news.bbc.co.uk/1/hi/magazine/6172257.stm
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Ahmato_
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PostPosted: 16:34 - 13 Dec 2006    Post subject: Reply with quote

Frankly I think this is bull. I've been around wi-fi for ages now and it never seemed to bother me! I think its just some scally school kids trying to get some days of school.
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ncrn
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PostPosted: 17:12 - 13 Dec 2006    Post subject: Reply with quote

I've got my wifi reciever sat in front of me, my modem is behind me, I have had data streaming through me for months now, hasn't done anything to me :/

its just a way for parents to pinpoint the migranes their overweight over computered/tv'd children are suffering from, or something to that extent.
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feef
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PostPosted: 17:34 - 13 Dec 2006    Post subject: Reply with quote

Bwahahaha

they'll be issuing tin-foil hats soon Very Happy

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TheDonUK
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PostPosted: 18:07 - 13 Dec 2006    Post subject: Reply with quote

I dont know about wi-fi

But some mobiles i swear i can feel the radiation cooking my grey matter...
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ColdInsomnia
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PostPosted: 19:31 - 13 Dec 2006    Post subject: Reply with quote

Had a wireless network in the house for a year now.. haven't noticed any headaches or anything.

How can the school think to blame wi-fi just because some kids got headaches?

Or were headaches unheard of before wireless networks?
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gadfium
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PostPosted: 20:41 - 13 Dec 2006    Post subject: Reply with quote

More stupid scare-mongering and panicking. The pseudo0science that is generally quoted in relation to this drives me up the wall.


Question: How come no-one complains about EM radiation being transmitted for TV and radio? Surely this is more prevalent that WiFi (and a damn sight more powerful as well)???
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Zimbo
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PostPosted: 21:13 - 13 Dec 2006    Post subject: Reply with quote

They'd better all get rid of their cordless phones at home as well then, as they use similar DECT technology an similar frequencies and at similar power!
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gadfium
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PostPosted: 21:29 - 13 Dec 2006    Post subject: Reply with quote

Zimbo wrote:
They'd better all get rid of their cordless phones at home as well then, as they use similar DECT technology an similar frequencies and at similar power!


LOL...true! Funny how no-one mentions that either!
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spitfire
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PostPosted: 18:23 - 14 Dec 2006    Post subject: Reply with quote

I actually work with WiFi from a hardware development perspective and although I am no where near qualified to be an expert on radiated power into human flesh I can tell you the following:

Most wifi products work in the 2.4GHz band (802.11b and g standards) some work on the 5GHz band (802.11a) Bluetooth is also 2.4GHz, they all sit in a band called ISM (Industrial scientific and medical) now microwave ovens admittedly sit in the same band at around 2.4GHz, which might initially alarm you as you know what they do to meat! But what you have to consider is the power outputs of these devices.

Bluetooth only transmits at around 1mw as it only needs a 10m range which really is no cause for concern.

Most WiFi standards around the world permit a maximum power output of 20dBm for any device. That is 20dB referenced to a milliwatt so 0dBm = 1mW of power.

20dBm = 100mW (note the scaling is not linear)

100mW is not much power, it is enough to transmit over say a 300m range. I would very much doubt it would do you any harm.

Now a mobile phone has to transmit of several KM so it would have an output of around 2w that is 20 times the power, that could be more of a concern.

A microwave oven is about 600w so that is 6000 times the power.


Last edited by spitfire on 09:20 - 15 Dec 2006; edited 3 times in total
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Mister James
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PostPosted: 18:57 - 14 Dec 2006    Post subject: Reply with quote

As far as I can tell, this scare dates back to a Guardian editorial a few weeks ago, wherein the author admitted zero technical knowledge but felt qualified to state that it was obvious that Wireless Networks caused cellular damage. Even more amusingly, she stated that normal network signals caused no problems, it was only when data was transfered over the network that the damage was inflicted......
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msgander
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PostPosted: 14:23 - 19 Dec 2006    Post subject: Reply with quote

The mobile phone issues, despite what has been issued on paper, were proved.....at more harmful to under 16's who havent fully developed bone and brain wise.....
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veeeffarr
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PostPosted: 15:22 - 19 Dec 2006    Post subject: Reply with quote

I've been using mobile phones for 7 years now and theres nothing wronfsoia fhoi a8dsy8y1c 2ey8 1 e8hwith me
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MarJay
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PostPosted: 23:47 - 19 Dec 2006    Post subject: Reply with quote

Stick wrote:
The mobile phone issues, despite what has been issued on paper, were proved.....at more harmful to under 16's who havent fully developed bone and brain wise.....


No, it was a government reccomendation to be on the safe side. No such proof exists.
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instigator
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PostPosted: 23:57 - 19 Dec 2006    Post subject: Reply with quote

Toby R wrote:
I've been using mobile phones for 7 years now and theres nothing wronfsoia fhoi a8dsy8y1c 2ey8 1 e8hwith me


Well, you did buy a gs500 so it speaks for itself. Laughing
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msgander
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PostPosted: 08:22 - 20 Dec 2006    Post subject: Reply with quote

https://ehso.com/ehshome/cellphonecancer.php

Make of it what you will but some lovely snippets in there...

I tend to look at it in terms of 30/40 years, if you dont be a little careful now, then you may look back.....

Quote:
TAKEAWAY: Medical studies released over the past few years suggested that there was no link between cell phone use and brain tumors. A new Swedish study, published in the International Archives of Occupational and Environmental Health, suggest that the news isn't so good. The study compared 2,000 cancer patients against 2,000 healthy people. Of the 905 cancer patients with malignant brain tumors, 10 percent were heavy cell phone users (10 years of use averaging more than one hour per day). That was 3.7 times the risk as in the non-heavy use group. There also was twice the incidence of the cancer appearing on the side of the head where the user held the phone. This, the story suggests, would indicated that using an ear piece is a good alternative. A British researcher said, however, that the wire could act as an antenna and sporadically send a strong current into the user's ear. For this reason, wireless connectivity may be the best answer.

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GodzGift
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PostPosted: 13:02 - 21 Dec 2006    Post subject: Reply with quote

hands free will reduce the direct waves
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MarJay
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PostPosted: 14:04 - 21 Dec 2006    Post subject: Reply with quote

Stick wrote:
Make of it what you will but some lovely snippets in there...

I tend to look at it in terms of 30/40 years, if you dont be a little careful now, then you may look back.....


I watched a programme recently on Chernobyl and they said that they only found a cancer 'cluster' around the site of the reactor because they included all of the cancers not developed enough to normally be detected by ordinary medical checks. The majority of these will never progress into a health threatening tumour.

This is with people living next to a huge gamma source. If gamma rays arent' enough to cause a huge cancer spike then non ionising EM radiation can't do a lot too. Although the inverse square law applies.

A Mobile Phone antenna in my back garden transfers less energy to me than my phone does, because as the distance from the antenna doubles then the energy reduces to a quarter.
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_Will_
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PostPosted: 15:17 - 21 Dec 2006    Post subject: Reply with quote

Im around wifi, sit close to screens and such all day and i never get headaches at all.
Maybe parents should do something about the whinging unhealthy little shits first.
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Optikn3rv
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PostPosted: 17:21 - 27 Dec 2006    Post subject: Reply with quote

TheDonUK wrote:
I dont know about wi-fi

But some mobiles i swear i can feel the radiation cooking my grey matter...


what you doing sitting on a mobile?
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