Q: I seem to recall this from my fifth-grade geography class. ![]() Any point on the globe can be defined by the intersection of two ordinate lines. These lines divide our entire planet into a system of coordinates. If not, just about any map will do.Īs you look at your globe or map, notice the lines that run north to south as well as east to west. How do I determine my own grid square?Ī: Before we get into grid squares, let's take a quick look at one of the more common methods used to define locations. ![]() They say that grid squares are usually exchanged during these contests, but I'm not sure what a grid square is. Q: I'm interested in trying my luck in an upcoming ARRL VHF/UHF or 10-GHz contest because I'm gunning for my VHF/ UHF Century Club award. ![]() Mike Gruber, WAISVF, ARRL Laboratory Engineer, walks you through this maze and helps you discover where you are - geographically, if not metaphysically! -WB8IMY An alternative title for this month's column might be: Everything You've Always Wanted to Know About Coordinates and Grid Squares But Were Afraid to Ask.Īs more hams explore the worlds of VHF, UHF, microwave and satellite operating, we receive an increasing number of questions about grid squares in particular and geographical coordinates in general.
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