Or a compass laying on a camera tripod, and an up-to-date magnetic declination map (Google it).
73, Mike www.w0btu.com On Fri, Nov 1, 2013 at 12:12 PM, Charlie Cunningham < charlie-cunning...@nc.rr.com> wrote: > ... by using a solar determination of true North. > The way that I do it for my antenna arrays is: > > 1.0 Use a weather site to determine local sunrise and sunset times for > your > location on the day that you are going to make the determination. > > 2.0 Split the difference to determine the time for your local solar noon. > > 3.0 At the time of your local solar noon, a vertical shaft (determined by > plumb line or spirit level) will cast a shadow that points to true North. > (Best done on sunny day of course!) > _________________ Topband Reflector
