People who do some reading on the subject come across concerns about exposure to cellular energy, and the tendency is to equate this as a concern over the antennas on the tower. The reality is that if there is any RF safety concern related phone systems , it is with using the phone itself , not with the energy from the antennas on the tower. The only exception is if anybody on the tower to one or more of the antennas.
Here are two statements that apply to every tower site with cellular antennas :
1. If anybody hold a cell phone near ones head , as opposed to texting, using a headset , or a hands free device , one will absorb an absolute minimum of 100 times more of RF energy than the maximum one could absorb from any tower-mounted cellular antennas , assuming one on the ground.
2. If cellular reception is poor in ones area , the installation of a cellular tower or cellular antennas on a roof top / water tank will dramatically reduce the RF exposure of any one that uses a cellular phone in handhold mode.
Cell phones are programmed to use the minimum amount of power needed to make good connection. So, when the signal is strong the phone transmits at no more than 10 % of the power that it uses when the signal is weak. And when the connection is poor, people tend to hold the phone tightly to their heads so that they can hear better , which further increases their exposure by another factor of 10. So, when a person holding a phone tight to his or her head with a poor connection will absorb at least 100 times RF energy than when the phone is held about an one inch away and the signal is strong.
The other point is that children tend to not use headsets . For this reason there are restrictions on the use of cellular phones by children in Great Britain. One study showed that children under 20 who use cellular phones are five times more likely to get brain cancer than children who do not use cellular phones.
More in next blog.
Kisalay Mitra ,
EFCTN .
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