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Technology Stocks : Qualcomm Incorporated (QCOM) -- Ignore unavailable to you. Want to Upgrade?


To: Poet who wrote (45927)10/24/1999 10:57:00 AM
From: Bux  Respond to of 152472
 
Interesting that CDMA has only 1/3 the power output of analog

It's actually much less than that since CDMA varies the transmit power dynamically to allow all handset signals to arrive at the base station with the same signal level. A handset will only transmit at maximum level at the fringes of a cell or if the signal is being blocked. In areas of a strong reception the transmit power will be extremely low.

Some have voiced concerns that a finding that cell-phones are related to health problems would impact QCOM shares negatively. I suggest it may do the opposite as people scramble to use the safest technology. I have not seen cell-phone health research that studies the impact of CDMA handsets on users but I suspect the impact, if any, would be at least proportional to the average transmit level or better.

Why do i think CDMA may fare even better than the lower output would suggest? Just a guess but the "spread" nature of CDMA might not be as likely to harm cells as the "pulsed" nature of TDMA based technologies. The power output of all phones is low enough that many do not think there is a danger of cell damage but if cell damage is occuring it is only happening in a small percentage of all cells being exposed. I suggest that RF energy concentrated at one frequency may be more likely to "excite" a cell sufficently to cause a change or damage than the same level of RF energy spread over many frequencies. So bring on the research!

Bux