Thank you all for various advice on how to create an appropriate Cabrillo fil from the RDXC DAT file. The method I picked was the one suggested by Valius, LY2BOS, who advised me to change the name of the contest from "RUSSIAN DX' to "CQ WPX" in the CFG file. N.B. that it is not sufficient to write just"WPX" there! 73, Rolf SM5MX, XV9SW