DB4OI Meaning of DB4OI in English Located in JO42OEDXCC entity: DA-DL - Fed. Rep. of Germany Last update on: 09/1989 Search DB4OI at QRZ.COMSearch DB4OI at VHF-Group DL-West Amateur radio QTH Locator English vocabulary. Английский словарь радиолюбителя QTH Локатор. 2012