Investigation of CISPR 12 test sites: Deviations due to nonspecified ground parameters

According to CISPR 12 an absorber lined shielded enclosure (ALSE) can be used if the results gained there match those obtained on an outdoor test site (OTS) [1]. Currently there are discussions on validation methods to be included in future editions of CISPR 12. One main problem for a systematic evaluation is the OTS as a reference, due to nonspecific ground parameters.