While the need for electromagnetic compatibility (EMC) above 1 GHz has been long appreciated by the military, it has recently become of wide concern. The upward march of computer clock frequencies and the massive deployment of radio users of these frequencies have fueled this concern. There has always been difficulties in dealing with physically large equipments and the need to establish testing of everyday electronics above 1 GHz has brought objects into the "large compared with a wavelength" category. In this paper, the author discussed the increasing importance of electromagnetic compatibility at higher frequencies. All the presented discussions apply to the traditional "open area test site" which has been adopted by CISPR. At the seminar, opinions were divided on the wisdom of CISPR's choice of traditional test methods.