Abstract
Investigations are being vigorously promoted to lead to the start-up of Digital terrestrial broadcasting in the Kanto Kinki and Chukyo regions by the end of 2003. The digital broadcast channel plan will utilize currently operating UHF TV bands, so it will be necessary to effectively arrange a limited number of channels in each region, while at the same time minimizing the effects on existing analog stations. In this situation, it will be important to determine how much interference wave fading margin can be expected. Here, the authors provide a summary of verification tests relates to required fading margins, based on fixed observation data for compressive strength of incoming waves forming a propagation path over the Bay of Ise.