DGPS Kapellskär Sweden 307,5kHz IMGP4205IMGP4206IMGP4207IMGP4208IMGP4209IMGP4210IMGP4211IMGP4212IMGP4213IMGP4214IMGP4215IMGP4216IMGP4217IMGP4218IMGP4219IMGP4220IMGP4221IMGP4222IMGP4223IMGP4224IMGP4225IMGP4226IMGP4227IMGP4228IMGP4229IMGP4230IMGP4231IMGP4234IMGP4235IMGP4236IMGP4237IMGP4239IMGP4267