Experience on proficiency testing in Italy with emphasis on radiated emission measurements from 30 MHz to 1 GHz

In recent years (since 2012, through 2014) two proficiency tests on radiated emission measurements were performed in Italy. The first one was devoted to radiated emission measurements in the frequency range between 200 MHz and 3 GHz in fully-anechoic rooms. A rather complete description of the significant technical aspects of this first experience is in [1]. The second one was devoted to radiated emission measurements in the frequency range between 30 MHz and 1 GHz. Both fully anechoic rooms and semi-anechoic rooms were involved in this second experience and measurement distance was 3 m or 10 m. In both cases nineteen participants took part in the proficiency test. The scope of this work is to report the results of this second proficiency test. In doing that several considerations are made concerning the design and realization of the travelling sample, the determination of the reference values of the electromagnetic field, the selection of the statistics through which the performance of the participants to the proficiency test is assessed, the way by which measurement results originated from different test environments (fully- and semi-anechoic rooms, 3 m and 10 m distances) are processed.