Было бы проще дать совет если бы Вы сразу указали название логгера.
http://www.trx-manager.com/DBFToAdif.zip
http://www.qsl.net/f6dex/dbftoadif_full.zip
DBFToAdif (15 K) allows the conversion of some old DBF log files (DXLog, EasyLog, LogPlus, TopLog, TurboLog TotalHAM92) to the ADIF Format. Warning : TRX-Manager or VB5 runtime are required on your computer. Please see also the Readme... If you don't have TRX-Manager installed, please download the full version : DBFToAdif_Full.zip (3.8Mb) and run Setup to install the DBFToAdif conversion utility.