They measure 2.5 minutes latitude by 5 minutes longitude, roughly corresponding to 3 × 4 miles in the continental US. These more precise locators are used as part of the exchange in the 10-GHz contest. A grid square is indicated by two letters (the field) and two numbers (the square), as in FN31, the grid square within which W1AW, ARRL's Maxim Memorial Station, resides.Įach subsquare is designated by the addition of two letters after the grid square, as FN44ig. Back to W3PGA Club Webpage Last updated December 2015 (C) W3PGA. ![]() Grid squares are a shorthand means of describing your general location anywhere on the Earth in a manner that is easy to communicate over the air.Īn instrument of the Maidenhead Locator System (named after the town outside London where it was first conceived by a meeting of European VHF managers in 1980), a grid square measures 1° latitude by 2° longitude and measures approximately 70 × 100 miles in the continental US. Grid Square Maps USA Grid Squares Map View it: USA Call Regions View it: USA Grid Squares 2 View it: Canadian Call Regions View it: World Grid Square View it: Eastern Europe Regions View it. Morse has a web utility for converting addresses to latitude/longitude using. One of the first things you will notice when you tune the low end of any VHF band is that most QSOs include an exchange of "grid squares." What are grid squares? Well, they're more like rectangles and are just a way of dividing up the surface of the Earth. This calculator by David K2DSL will show your grid square on a map.
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