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Re: [OM] Wifi and life

Subject: Re: [OM] Wifi and life
From: David Thatcher <plusphoto@xxxxxxxxxx>
Date: Sat, 8 Apr 2017 23:40:17 +0930
On Sat, Apr 08, 2017 at 12:05:01PM +0100, ChrisB wrote:
> I don???t think that it???s about mobiles, David; it???s about home
> modem-routers or gateways set to provide a WiFi connection to the LAN,
> thence to the WAN.
> Chris

This is true, but once mobiles went digital (GSM and later), it's all
packetised data over RF, just like WiFi. Basically it's intermittent
full power, not modulated like AM radio. With GSM, the power levels are
higher, but the flows are less consistent. 

I'm not sure which I'm more worried about:  WiFi or GSM/2g/3g/4g. WiFi
is very low power (generally up to 100mW max), but it's very regular
full-power emissions.

Don't keep your mobile in your bra (I'm kidding, but please pass this
advice on to your female friends if they do this). A close family member
had a brush with breast cancer (result was a radical mastectomy), with
the tumour right where that she used to keep her mobile. Now it stays in
her handbag, and she always uses the speaker function when on a call.

I was certified in Cisco (Aironet) WiFi design for a number of years.
(These certs expire if you don't pay the $ to take the exams to keep
them current. That's fair enough, as the technology changes and evolves,
though, strangely, professional qualifications do not do this!). 


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