Subject:  Re GSM phone (fwd)
Date:     Wed, 18 Mar 1998 135059 -0600 (CST)
From:     "Roy L. Beavers" <rbeavers@llion.org>
To:       emfguru@hotmail.com
--------------------------------------------------


---------- Forwarded message ----------
Date: Wed, 18 Mar 1998 17:55:29 GMT
From: Alasdair Philips 
To: "Roy L. Beavers" , emfguru@hotmail.com
Subject: Re: GSM phone (fwd)

Hi Valdemar!

The GSM phones were working at full power during the tests.  This is 2 watt
pulse power with an 8:1 duty cycle at 217 Hz.  Hence the "average" power is
only 0.25 watt.  An analogue phone (ETACS, etc) at full power output 0.6 W.
Many of us think it is the pulsing rather than the actual rms power that is 
the problem with GSM phones.

For completeness, GSM and PCN digital base-stations do NOT pulse - they fill
all used time-slots with dummy data.  This was to minimise EMC and RF
interference problems and also to help handsets adjust their time-delay
before making contact with the base-station.   The system is amazingly
complicated and the handsets have to allow for the time taken to get to
the local base station!!!

Alasdair.
================================================================

At 10:24 18/03/98 -0600, Roy L. Beavers wrote:
>
>
>Roy Beavers (EMFguru)
>rbeavers@llion.org..............http://www.feb.se/EMF-L/EMF-L.html
>................................It is better to light a single candle ...
>than to curse the darkness...............................................
>
>---------- Forwarded message ----------
>Date: Wed, 18 Mar 1998 11:38:56 +0000
>From: Valdemar Gisli Valdemarsson 
>To: rbeavers@llion.org
>Subject: GSM phone
>
>Hi Roy
>
>I wonde if anyone kan solve a mind bogling question.
>
>I have been reading about Dr. Kusters research on SAR's from GSM phones.
>Measurments are done using 0,25W input power to antenna.  All GSM phones
>have max 2W power output.  Does this mean that Dr. Kuster's SAR's numbers
>must be mulitiplyed with 8 (0,25W * 8 = 2W) to get the max. possible SAR
>from those phones.  Or does antenna gain play a role in those figures.
>
>Best regards.
>
>
>Valdemar Gisli Valdemarsson
>Iceland
>Phone: 354-896-6110
>email: vgv@isholf.is
>Internet:   http://www.isholf.is/vgv
>
>
>
>
 
 
Alasdair Philips    (aphilips@gn.apc.org)




Archive provided courtesy of WaveGuide, http://www.wave-guide.org
Reprinted with permission of Roy Beavers, http://www.feb.se/EMF-L/EMF-L.html