Interfering fields were measured in several cycles with a total duration of several hours with the aid of various broadbandantennas. The magnetic field measured between 5 Hz and 10 MHz was below 326 nT at 50 Hz. The electric field measured between 9 kHz and 3 GHz was below 25 mV/m with short term peaks at 70 kHz and between 100 and 200 MHz.
Measurement and calculation details
The resulting field distribution in the test room was simulated using a local numerical program. The peak value of the electric field strength depending on the radial distance from the antenna was measured in an anechoic chamber using two identical calibrated monopole probes. The antenna distance from the head was adjusted not to exceed the applicable limit of DIN/VDE 0848 being 41.4 V/m at 914 MHz.