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October 29, 2011


Cor van de Water

There are clear guidance how much RF you can sustain for long periods of time without effect. But the 400 phones losing connection will not continue to send 100% duty cycle 24/7 but just occasionally, when they pickup a signal from a ground tower, send a few packets to try and re-establish connection, after which they turn back to listening mode.
How do you feel about Megawatt+ broadcast stations where you have businesses and residences nearby and you can generate a spark simply by holding your car key close to the door lock? Been there, done that. I have not heard of many reports of problems, other than electronic organs reproducing broadcasts instead of the keys pressed and more such expected behaviors from high RF fields, but no detrimental effects on humans....
Many HAMs are also working with hundreds of Watts into the antennas around the house. Then there are industrial heaters that pump tens of kiloWatts to manufacture stuff like steel pipe (The 'I' in ISM). There are many places where high EM fields exist, without apparent problems except causing interference to other communication signals.

John Dunn

I happen to have a friend who depends on a pacemaker. If I was him, I would not be happy with the idea of being inside of a Gaussian shell with multi-hundreds of watts of RF coming from a multiplicity of cell phones, no matter how brief their duty cycle might be. That there are other circumstances in which high levels of RF have done, or are unlikely to do harm would not be comforting.

Jerry Cohen

John, I agree with your analysis. This is a scary situation indeed.

Douglas Hughes

Allowing cellular telephones aboard USA commercial aircraft would require an about face from the crew unions, especially the AFA. They don't want the passenger rage. Many phone users would be as bad as many drunks.

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