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I did this experiment at uni and was wondering if what i found was correct

2006-07-23 00:37:21 · 3 answers · asked by Julia 1 in Science & Mathematics Physics

3 answers

It varies depending on the kind of cell phone you are using, IE. GSM, TDMA, CDMA, analog, etc.

But in general, they emit very little energy between calls. They just have to tell the cell network where they are, occasionally.

When they connect, they may have to move several connection setup message back and forth so the power level goes up.

Then during the call, they move mostly voice data. In an old analog system, the power level would stay about the same as setup. In a digital system, voice compression will probably lower the power output. Conversations also tend to be half-duplex so that may cut the power level almost in half.

Call setup could also start with a high power level, and then lower the level once the phone and cell station determine that the signal-to-noise ratio is very good.

All of the cell phone standards are published. You should be able to read the specs, one way or another, to see what your system does with power levels.

2006-07-23 00:55:56 · answer #1 · answered by pondering_it_all 4 · 0 0

Cell phone have their highest radiation during calls. You can see in in the battery life.

2006-07-23 07:45:57 · answer #2 · answered by Bill 6 · 0 0

Yes...

2006-07-23 08:31:08 · answer #3 · answered by Anonymous · 0 0

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