Re: Great Circle Calculations

2007-07-20 Thread Th. Taudin Chabot
Peter, I am afraid that the webpage you mention doesn't exist (anymore). Thibaud Chabot At 02:18 20-07-2007, Peter Mayer wrote: Hi, Since radio wave travel in Great Circles, hams need Azimuth maps to know where to point direction antennas. I've downloaded one called Azimuth Map, and the docum

Great circle calculation

2007-07-20 Thread Richard M Koolish
There are a lot of navigation calculations at: http://williams.best.vwh.net/avform.htm It includes the distance and course between points. --- https://lists.uni-koeln.de/mailman/listinfo/sundial

Re: Great Circle Calculations

2007-07-20 Thread Peter Mayer
Dear Thibaud, Oh! Here's a web site which does seem to have it. Scroll down to the alphabetical listing; it's the fourth one. There are other Great Circle programs available from the site as well. http://www.dxzone.com/catalog/Software/Grid_Bearing_and_Maps/ best wishes, Peter Th. Ta

RE: Great Circle Calculations

2007-07-20 Thread John Lynes
Any map drawn in gnomonic projection has the property that all great circles are straight lines. To plot a great circle on such a map, just draw a straight line from your departure point to your destination. Any book on map projections will tell you about the gnomonic projection, but you will