What is the Sonar Log Harvester? Why doesn my printer print all the grid lines?
FAQ Answers: It’s not your Loran! If you use Loran Chains 9960 or 8970 and have noticed that your waypoints are now all off by 600 ft or so, blame the Department of Homeland Security not your loran. On January 17, 2007, the DHS changed the way the loran stations work for these chains and as a result, your observed 9960 waypoints are off by about 0.5 us on the Xray line and 0.3 us on the Yankee line. See the article: http://www.navcen.uscg.gov/eLORAN/time_of-transmission.htm . I am working on this issue with several customers and have a fix in version 7.0. If you are working with loran waypoints taken before this change date, they are OK for conversion to GPs, but a loran will not now agree with them. The DHS has subtracted 0.5 us from the 9960Xray waypoint and 0.3 us from the 9960Yankee waypoint. Therefore, your waypoints taken after 1/17/07 will be off by about this amount. For example, if you want to find an old number: 26875.1, 42028.9 you would look for 26874.6, 42028.6 with your L
