In the case of WIOT, some of the interference complaints were in areas which were terrain shadowed from WIOT at the edge of their Class B 54 dBu protected contour. That is why they held more weight than a complaint outside the protected contour. There are translators popping up almost daily, and smaller owners also need to be vigilant. In the Detroit area, there are also Canadian stations and translators appearing. Make sure if it is a foreign station, your complaint is filed immediately on their application, to the FCC International Bureau. The treaty needs to be reviewed, including all related footnotes, and ALL aspects of the treaty must be complied with. Review the treaty as engineers yourself, and also get Consulting Engineers and Communications Attorneys involved if necessary. Once it is licensed, there is less recourse if it is a foreign station or translator.