This grid system is used by radio amateurs worldwide as a convenient and short way of representing and communicating a location. Ham Square is a free application that displays the Maidenhead Locator, or 'square', for your current location. They measure 2.5 minutes latitude by 5 minutes longitude, roughly corresponding to 3 × 4 miles in the continental US. Download Ham Square and enjoy it on your iPhone, iPad, and iPod touch.

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. Maidenhead Grid Square Locator System - Ham Radio Q&A screenshot 1. Another method of determining your grid square is to simply plug your coordinates into a. This app displays the current value Grid Square Locator (Maidenhead Locator). See Tables 1 and 2 below of this 1983 VUCC article. Grids Grids Directions - Find the information you need about grids below. (See the publications catalog elsewhere in this issue.) If you know your precise coordinates, you can also determine your grid square manually. This app displays the current value Grid Square Locator (Maidenhead Locator), adjacent Grid squares and the relative position of the subsquare within the.

WG7J's GridMapper v1.7.4 What's new Please upload an ADIF v2 file, and we will plot all worked grids Select ADIF File: (Max. 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. A grid-square map and an atlas are available from the ARRL. WG7J's GridMapper v1.7.4 - Hamradio QSO Grid Mapper and FFMA Grid Tracker. This website is managed on a digital platform of the National Football League.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.

Ham radio grid square locator map