The procedure was conducted twice in a double-blind design on separate days: once with a real exposure and once with a sham exposure. A total of 73 participants (38 women and 35 men) were tested across different European laboratories. Not all participants were given all audiological tests.
7 mm thick single-sided round dual band patch antenna with a diameter of 31 mm encapsulated in a 40 mm diameter, 7 mm thick transparent plastic capsule with Styrofoam insulation, connected to a Nokia 6650 UMTSmobile phone; antenna mounted on a plastic head set in a position similiar to the normal use of a mobile phone
The data showed no evidence of adverse effects on the audiological measures for short-term exposure (20 minutes) at a maximum SAR of 1.75 W/kg at 1947 MHz.
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