This is a signal trace which uses the same tool as used in my earlier post for measuring signal strength. The set is a Nokia N78 and the measurement was carried out at Kalyani Motors, Banargetta Road with GSM Mode of operation with operator being Bharti Airtel. The call was made from a landline with call being picked up with the Nokia N78 handset.See the violet colur line and the average power measurement of the radiated signal from the handset. The average is 24dBm or 250mW over the 1 minute duration of the call. The green line below shows the input signal strength which is an average -77dBm. So an hours call can cause a lot of harm.
Also like the recent articles coming in the media it may be a good option to take the call in loudspeaker mode ad avoid it keeping it near the ear.
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