Gridsquares - Revision history

TheAnarcat: /* What is my gridsquare */

2010-10-03T02:04:12Z

What is my gridsquare

← Older revision		Revision as of 19:04, 2 October 2010
Line 48:		Line 48:
	==What is my gridsquare==		==What is my gridsquare==

	The most accurate gridsquare calculator to date (October 2009) is found here: [http://~~qth~~.~~map~~.~~googlepages.com~~/~~?qth=~~ Gridsquare calculator] from QTH map		The most accurate gridsquare calculator to date (October 2009) is found here: [http://no.nonsense.ee/qthmap/ Gridsquare calculator] from QTH map

TimVK4YEH: fixed link

2009-10-19T08:28:32Z

fixed link

← Older revision		Revision as of 01:28, 19 October 2009
Line 48:		Line 48:
	==What is my gridsquare==		==What is my gridsquare==

	The most accurate gridsquare calculator to date ( October 2009) is found here: [~~QG62LL23VK~~ Gridsquare calculator] from QTH map		The most accurate gridsquare calculator to date (October 2009) is found here: [http://qth.map.googlepages.com/?qth= Gridsquare calculator] from QTH map

TimVK4YEH: /* How accurate is it? */

2009-10-19T08:27:24Z

How accurate is it?

← Older revision		Revision as of 01:27, 19 October 2009
Line 11:		Line 11:

	Compared to the conventional degrees/minutes/seconds system, most gridsquare calculations are relatively inaccurate. each gridsquare is usually 5 minutes of longitude deep and 2.5 minutes of latitude wide. In terms of distance, one minute is equivalent to one Nautical Mile on the surface of the earth (approximately 1.6km). Hence each gridsquare had an area of approximately 12.5square nautical miles (32 square kilometres).		Compared to the conventional degrees/minutes/seconds system, most gridsquare calculations are relatively inaccurate. each gridsquare is usually 5 minutes of longitude deep and 2.5 minutes of latitude wide. In terms of distance, one minute is equivalent to one Nautical Mile on the surface of the earth (approximately 1.6km). Hence each gridsquare had an area of approximately 12.5square nautical miles (32 square kilometres).

			* [http://qth.map.googlepages.com/?qth= Gridsquare calculator to 10 places #### #### ##]

	==How are gridsquares calculated?==		==How are gridsquares calculated?==

TimVK4YEH: added qth map

2009-10-14T08:13:28Z

added qth map

← Older revision		Revision as of 01:13, 14 October 2009
Line 43:		Line 43:

	{{operation}}		{{operation}}

			==What is my gridsquare==

			The most accurate gridsquare calculator to date ( October 2009) is found here: [QG62LL23VK Gridsquare calculator] from QTH map

Carlb: link QTH

2009-04-17T13:05:50Z

link QTH

← Older revision		Revision as of 06:05, 17 April 2009
Line 1:		Line 1:
	Related wiki pages: [[Propagation]], [[Calculators]]		Related wiki pages: [[Propagation]], [[Calculators]], [[QTH]]

	==What is it?==		==What is it?==

	Gridsquares - otherwise known as "Maidenhead QTH Locator System" is the system recognised by the [http://www.iaru.org/ International Amateur Radio Union] (IARU) for QTH location.		Gridsquares - otherwise known as "Maidenhead QTH Locator System" is the system recognised by the [http://www.iaru.org/ International Amateur Radio Union] (IARU) for [[QTH]] location.

	Gridsquares are based on the internationally recognised '''World Geodetic System''' ('''WGS''') which is used to provide precise location details of every point on the earth's surface. This information is critical in applicatons such as GPS and other satellite technologies. The term ''Maidenhead'' comse from the town in which the system was developed.		Gridsquares are based on the internationally recognised '''World Geodetic System''' ('''WGS''') which is used to provide precise location details of every point on the earth's surface. This information is critical in applicatons such as GPS and other satellite technologies. The term ''Maidenhead'' comse from the town in which the system was developed.

TimVK4YEH: /* How do I convert from gridsquares to degrees/minutes/seconds? */

2009-04-17T08:48:30Z

How do I convert from gridsquares to degrees/minutes/seconds?

← Older revision		Revision as of 01:48, 17 April 2009
Line 40:		Line 40:
	* [http://www.amsat.org/amsat/toys/gridconv.html Gridsquare convesion]		* [http://www.amsat.org/amsat/toys/gridconv.html Gridsquare convesion]
	* [http://f6fvy.free.fr/qthLocator/ Google maps gridsquare locator] Click on your QYH for a popup o showing your latitude/longitude and gridsquare		* [http://f6fvy.free.fr/qthLocator/ Google maps gridsquare locator] Click on your QYH for a popup o showing your latitude/longitude and gridsquare
			* [http://qth.map.googlepages.com/ gridsquare to googlemaps] Type in your gridsquare and get the googlemap. Can alos be used to find the distance between gridsquares.

	{{operation}}		{{operation}}

Carlb: /* How do I convert from qridsquares to degrees/minutes/seconds? */

2009-04-09T04:55:13Z

How do I convert from qridsquares to degrees/minutes/seconds?

← Older revision		Revision as of 21:55, 8 April 2009
Line 34:		Line 34:
	Tim Makins, [http://www.mapability.com/ei8ic/ EI8IC] has an excellent page with more detail.		Tim Makins, [http://www.mapability.com/ei8ic/ EI8IC] has an excellent page with more detail.

	==How do I convert from ~~qridsquares~~ to degrees/minutes/seconds?==		==How do I convert from gridsquares to degrees/minutes/seconds?==

	A number of very good online conversion programs ~~ara~~ available including:		A number of very good online conversion programs are available including:

	* [http://www.amsat.org/amsat/toys/gridconv.html Gridsquare convesion]		* [http://www.amsat.org/amsat/toys/gridconv.html Gridsquare convesion]
			* [http://f6fvy.free.fr/qthLocator/ Google maps gridsquare locator] Click on your QYH for a popup o showing your latitude/longitude and gridsquare

	* [http://f6fvy.free.fr/qthLocator/ Google maps gridsquare locator] Click on your QYH for a popup o showing your latitude/longitude and gridsquare
			{{operation}}

TimVK4YEH: /* Where do the letters and numbers in a gridsquare come from? */

2008-08-16T23:37:31Z

Where do the letters and numbers in a gridsquare come from?

← Older revision		Revision as of 16:37, 16 August 2008
Line 32:		Line 32:
	These are further divided into 324 smaller sections by sectioning the sides into 18 equal lengths labelled a - r from west to east and a - r from south to north.		These are further divided into 324 smaller sections by sectioning the sides into 18 equal lengths labelled a - r from west to east and a - r from south to north.

	[http://www.mapability.com/ei8ic/ EI8IC] has an excellent page with more detail.		Tim Makins, [http://www.mapability.com/ei8ic/ EI8IC] has an excellent page with more detail.

	==How do I convert from qridsquares to degrees/minutes/seconds?==		==How do I convert from qridsquares to degrees/minutes/seconds?==

TimVK4YEH: added links to diagrams

2008-08-16T23:34:31Z

added links to diagrams

← Older revision		Revision as of 16:34, 16 August 2008
Line 25:		Line 25:

	The surface of the earh is divided into "squares" or fields, labelled A - R along lines of latitude starting at <math> 180^0 </math>, and A - R along lines of longitude starting at the south pole, giving 324 fields.		The surface of the earh is divided into "squares" or fields, labelled A - R along lines of latitude starting at <math> 180^0 </math>, and A - R along lines of longitude starting at the south pole, giving 324 fields.

			[http://ham-shack.com/maps/world_grid_map.html World Gridsquare fields map] from [http://www.hamshack.com HamShack]

	Each of these fields is divided into 100 smaller parts by sectioning each of the sides into 10 equal lengths. These are labelled 0 - 9 from west to east and 0 - 9 south to north.		Each of these fields is divided into 100 smaller parts by sectioning each of the sides into 10 equal lengths. These are labelled 0 - 9 from west to east and 0 - 9 south to north.

	These are further divided into 324 smaller sections by sectioning the sides into 18 equal lengths labelled a - r from west to east and a - r from south to north.		These are further divided into 324 smaller sections by sectioning the sides into 18 equal lengths labelled a - r from west to east and a - r from south to north.

			[http://www.mapability.com/ei8ic/ EI8IC] has an excellent page with more detail.

	==How do I convert from qridsquares to degrees/minutes/seconds?==		==How do I convert from qridsquares to degrees/minutes/seconds?==

TimVK4YEH: /* Where do the letters and numbers in a gridsquare come from? */

2008-08-16T23:05:21Z

Where do the letters and numbers in a gridsquare come from?

← Older revision		Revision as of 16:05, 16 August 2008
Line 28:		Line 28:
	Each of these fields is divided into 100 smaller parts by sectioning each of the sides into 10 equal lengths. These are labelled 0 - 9 from west to east and 0 - 9 south to north.		Each of these fields is divided into 100 smaller parts by sectioning each of the sides into 10 equal lengths. These are labelled 0 - 9 from west to east and 0 - 9 south to north.

	These are further divided into 324 smaller sections by sectioning the sides into 18 equal lengths labelled A - R from west to east and a - r from south to north.		These are further divided into 324 smaller sections by sectioning the sides into 18 equal lengths labelled a - r from west to east and a - r from south to north.

	==How do I convert from qridsquares to degrees/minutes/seconds?==		==How do I convert from qridsquares to degrees/minutes/seconds?==