The US Coast Guard Website has a DOS program that can be downloaded and is self extracting. The link is ... http://www.rdc.uscg.mil/rdcpages/software.html
If you are far from land the conversion will be more accurate than if you are close to land. The error is related to whats called the Loran ASF correction factor.
If you are far from land the conversion will be more accurate than if you are close to land. The error is related to whats called the Loran ASF correction factor.