Great Circle Bearings and Ranges

If you plan to use an antenna which is directional, then you will need to know which way to point your antenna in order to talk to stations in other regions or countries.

But sometimes you will be surprised what is the direction that has the shortest range to another country. For example, if you live in Toronto, you might think you have to point your antenna east (or west) to talk to Thailand. Well it turns out you should point it north (right over the north pole)!

The form below lets you pick a city near where you live, and a second city where you might want to talk to. When you click the SUBMIT button, the range and bearing (relative to True North) will be calculated and displayed. Give it a try!

[ Foreign visitors : sorry, but the "Your City" selections are limited to Canadian cities at the moment. ]

[ Reminder: straight North is 0 degrees, East is 90, South is 180, and West is 270 degrees. ]



BEARING (degrees) :

RANGE (kilometres) :


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