At 08:11 PM 10/16/2009, I wrote: >If I had to hazard a guess it would be that the D4W bearings are >great-circle bearings relative to the "True" geographic North >Pole. To be anything else wouldn't make sense.
The trick then becomes making sure your antenna is pointing toward the geographic North Pole when it indicates it is pointing North. As someone else mentioned, the beam width of most HF antennas is so broad you can get close enough by "eye balling" relative to the geography around you. If for some reason you actually require accurate headings within a few degrees (such as multi-element UHF or microwave arrays with beam widths of only a few degrees) then the determination of accurate headings becomes an interesting exercise. I am sure that D4W's headings are mathematically accurate relative to the geographic north pole. Aligning your antennas with anything close to that kind of accuracy is left as an exercise for the reader. :) Dick -- Dick Flanagan K7VC [email protected] ______________________________________________________________ Dx4win mailing list Home: http://mailman.qth.net/mailman/listinfo/dx4win Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
