Understanding Maidenhead Locators

The Maidenhead Locator system is a system of encoding geographic coordinates that is commonly used in Amateur Radio. You’ll often see or hear another operator’s “grid square” as a string of either four or six characters—e.g. EN80 or EN80LB —although the latter is actually a Subsquare as we’ll see. The Maidenhead system divides the Earth into smaller and smaller rectangles of fixed angular…