What is a grid square on a map?
A grid of squares helps the map-reader to locate a place. The vertical lines are called eastings. They are numbered – the numbers increase to the east. The horizontal lines are called northings as the numbers increase in an northerly direction.
How many grid squares are in the United States?
There are 488 grid squares in the contiguous 48 states. Each 2° by 1° area is about 100 by 70 miles. Each major field “DN” contains 10×10 or 100 numbered grid squares, e.g. DN00 – DN99. Each square is further divided by adding two letters, as in CN97xn, about 4 by 3 miles.
What is the size of a grid square?
When the term ‘grid square’ is used, it can refer to a square with a side length of 10 km (6 mi), 1 km, 100 m (328 ft), 10 m or 1 m, depending on the precision of the coordinates provided.
Why are the grid lines numbered?
Lines numbers respect the writing mode of the document and so in a right-to-left language for example, column line 1 will be on the right of the grid. The image below shows the line numbers of the grid, assuming the language is left-to-right.
What is the size of a grid square on a map?
approximately 70 × 100 miles
An 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.
What is the United States national grid based on?
USNG relies on the familiar Universal Transverse Mercator (UTM) coordinate system and is applied not only in the United States but also worldwide. USNG is a nonproprietary alphanumeric referencing system derived from the Military Grid Reference System (MGRS).
What is the US national grid system?
The United States National Grid (USNG) is a multi-purpose location system of grid references used in the United States. It provides a nationally consistent “language of location”, optimized for local applications, in a compact, user friendly format.
What is my QRA locator?
The QRA locator, also called QTH locator in some publications, is an obsolete geographic coordinate system used by amateur radio operators in Europe before the introduction of the Maidenhead Locator System.
Is the map of Hawaii based on a grid square?
The map of Hawaii is based on the grid square map information from ARRL. U.S. Grid Square Map Maidenhead Created Date 5/29/2013 1:43:17 PM
How big is a grid square in miles?
*An 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 x 100 miles in the continental US.
What is the location of the invisible grid?
Information current as of November 2011. An invisible grid, based on 1° latitude by 2° longitude, encompasses the globe and is used for geographic location and identification during communications using your VHF and UHF radios. As HF operators collect QSL cards from around the world, VHF/UHF operators collect grid squares.
Is the ICOM logo a trademark or registered trademark?
©2013 Icom America Inc. The Icom logo is a registered trademark of Icom Inc. 41390 U.S. Grid Square Map Maidenhead