Is there a public standard for 8 and 10 character grid locators?How can one convert from Lat/Long to Grid Square?Is there a KML or similar file that shows all of the CQ Zones?How can one convert from Lat/Long to Grid Square?What are CQ/ITU zones used for?Convert maidenhead grid square to lat/long in Excel?How can one convert from Grid Square to Lat/Long?Can a FM tuner (receiver) be detected and triangulated?
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Is there a public standard for 8 and 10 character grid locators?
How can one convert from Lat/Long to Grid Square?Is there a KML or similar file that shows all of the CQ Zones?How can one convert from Lat/Long to Grid Square?What are CQ/ITU zones used for?Convert maidenhead grid square to lat/long in Excel?How can one convert from Grid Square to Lat/Long?Can a FM tuner (receiver) be detected and triangulated?
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$begingroup$
We have a question about the algorithm for conversion from coordinates into grid squares here, and this is an extension of that.
I've noticed that there are several web-sites (for example here, or here, or here) and Android applications which will happily show me my 8 or 10 character locator. However, I've been unable to find an exact specification for that extended system.
So my question is: Is there a publicly available specification for the 8 and 10 character locator systems, and if yes, where?
location maidenhead-locator
asked May 26 at 10:26
AndrejaKoAndrejaKo
1,9112 gold badges10 silver badges23 bronze badges
$endgroup$
add a comment
|
$begingroup$
We have a question about the algorithm for conversion from coordinates into grid squares here, and this is an extension of that.
I've noticed that there are several web-sites (for example here, or here, or here) and Android applications which will happily show me my 8 or 10 character locator. However, I've been unable to find an exact specification for that extended system.
So my question is: Is there a publicly available specification for the 8 and 10 character locator systems, and if yes, where?
location maidenhead-locator
asked May 26 at 10:26
AndrejaKoAndrejaKo
1,9112 gold badges10 silver badges23 bronze badges
$endgroup$
add a comment
|
$begingroup$
We have a question about the algorithm for conversion from coordinates into grid squares here, and this is an extension of that.
I've noticed that there are several web-sites (for example here, or here, or here) and Android applications which will happily show me my 8 or 10 character locator. However, I've been unable to find an exact specification for that extended system.
So my question is: Is there a publicly available specification for the 8 and 10 character locator systems, and if yes, where?
location maidenhead-locator
asked May 26 at 10:26
AndrejaKoAndrejaKo
1,9112 gold badges10 silver badges23 bronze badges
$endgroup$
We have a question about the algorithm for conversion from coordinates into grid squares here, and this is an extension of that.
I've noticed that there are several web-sites (for example here, or here, or here) and Android applications which will happily show me my 8 or 10 character locator. However, I've been unable to find an exact specification for that extended system.
So my question is: Is there a publicly available specification for the 8 and 10 character locator systems, and if yes, where?
location maidenhead-locator
location maidenhead-locator
asked May 26 at 10:26
AndrejaKoAndrejaKo
1,9112 gold badges10 silver badges23 bronze badges
asked May 26 at 10:26
AndrejaKoAndrejaKo
1,9112 gold badges10 silver badges23 bronze badges
asked May 26 at 10:26
AndrejaKoAndrejaKo
1,9112 gold badges10 silver badges23 bronze badges
asked May 26 at 10:26
AndrejaKoAndrejaKo
1,9112 gold badges10 silver badges23 bronze badges
asked May 26 at 10:26
AndrejaKoAndrejaKo
1,9112 gold badges10 silver badges23 bronze badges
1,9112 gold badges10 silver badges23 bronze badges
add a comment
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3 Answers
3
active
oldest
votes
$begingroup$
The Maidenhead locator system (which you correctly tagged) is described in detail in this Wikipedia page.
A short summary from that page is:
To summarise:
- Character pairs encode longitude first, and then latitude.
- The first pair (a field) encodes with base 18 and the letters "A" to "R".
- The second pair (square) encodes with base 10 and the digits "0" to "9".
- The third pair (subsquare) encodes with base 24 and the letters "a" to "x".
- The fourth pair (extended square) encodes with base 10 and the digits "0" to "9".
- The fifth and subsequent pairs are not formally defined, but recycling the third and fourth pair algorithms is one possible definition: BL11bh16oo66
On shortwave frequencies, positions are reported at square precision, and on VHF and UHF, subsquare precision is used. More precise position reports are very rarely used.
Note that this means the formal standard does not define anything past the first eight characters (four pairs), but that people tend to extend the system used in the third and fourth pair if they need to be more accurate.
Also note that this extension (only as far as five pairs, or ten characters) is the one used at the APRS website.
answered May 26 at 10:33
Scott Earle♦Scott Earle
3,1051 gold badge10 silver badges23 bronze badges
$endgroup$
$begingroup$
But, from what I can see on the Wikipedia page, there's only the reference to the 6 character system there. I don't see a reference to the 8 or 10 character versions.
$endgroup$
– AndrejaKo
May 26 at 10:38
1
$begingroup$
@AndrejaKo the quoted material covers 8 characters and discusses the possibility of more.
$endgroup$
– hobbs - KC2G
May 28 at 21:02
add a comment
|
$begingroup$
The Maidenhead system breaks down a grid into increasingly smaller chunks. The fourth pair is defined as an evenly spaced 100 square grid, or 10x10. This site has an excellent image that breaks that down for you:
In this picture, the black box outline is MK80ht. You can see this box was further subdivided, and the user's location of Kalpathy, India is located in MK80ht80.
As noted by the Wikipedia article, there is no formal definition for anything smaller than that, however some users apparently recycle the formula for the third and fourth pairs if needed:
- The first pair (a field) encodes with base 18 and the letters "A" to "R".
- The second pair (square) encodes with base 10 and the digits "0" to "9".
- The third pair (subsquare) encodes with base 24 and the letters "a" to "x".
- The fourth pair (extended square) encodes with base 10 and the digits "0" to "9".
- The fifth and subsequent pairs are not formally defined, but recycling the third and fourth pair algorithms is one possible
definition
answered May 26 at 12:34
SandPiperSandPiper
4891 gold badge3 silver badges17 bronze badges
$endgroup$
add a comment
|
$begingroup$
A recommendation for a formal definition of the 10 character system is available in the IARU-R1 VHF Handbook.
Here's the relevant quote:
3.7 Proposals to Clarify and Standardise the IARU Locator, including
higher Accuracy positioning
The definition of the existing 8-character scheme should be extended
by adding a further division into 24 lettered squares to give a
10-character locator allowing a positioning accuracy of around 13
metres. Even higher resolution use for future appli-cations should be
defined by successively sub-dividing in the same way; alternating 10
and 24 subdivisions using numbers and letter pairs.When the locator is specified at lower resolutions, e.g. 6 characters
such as in VHF contests, the centre of the squaroid at that
resolution should be taken. This is equivalent to, for example,
appending the 6-digit location IO90IV with the mid-range char-acters
44LL to give IO90IV44LL for the purposes of calculation. A quoted
locator of IO90IV58 would have “LL” appended for the calculation.- That the WGS84 worldwide spheroid be the standard mapping be used for
all locator conversions. - IARU Locators should always be quoted and used employing all Upper
Case (Capital) letters.
answered Jul 20 at 19:04
AndrejaKoAndrejaKo
1,9112 gold badges10 silver badges23 bronze badges
$endgroup$
add a comment
|
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3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
$begingroup$
The Maidenhead locator system (which you correctly tagged) is described in detail in this Wikipedia page.
A short summary from that page is:
To summarise:
- Character pairs encode longitude first, and then latitude.
- The first pair (a field) encodes with base 18 and the letters "A" to "R".
- The second pair (square) encodes with base 10 and the digits "0" to "9".
- The third pair (subsquare) encodes with base 24 and the letters "a" to "x".
- The fourth pair (extended square) encodes with base 10 and the digits "0" to "9".
- The fifth and subsequent pairs are not formally defined, but recycling the third and fourth pair algorithms is one possible definition: BL11bh16oo66
On shortwave frequencies, positions are reported at square precision, and on VHF and UHF, subsquare precision is used. More precise position reports are very rarely used.
Note that this means the formal standard does not define anything past the first eight characters (four pairs), but that people tend to extend the system used in the third and fourth pair if they need to be more accurate.
Also note that this extension (only as far as five pairs, or ten characters) is the one used at the APRS website.
answered May 26 at 10:33
Scott Earle♦Scott Earle
3,1051 gold badge10 silver badges23 bronze badges
$endgroup$
$begingroup$
But, from what I can see on the Wikipedia page, there's only the reference to the 6 character system there. I don't see a reference to the 8 or 10 character versions.
$endgroup$
– AndrejaKo
May 26 at 10:38
1
$begingroup$
@AndrejaKo the quoted material covers 8 characters and discusses the possibility of more.
$endgroup$
– hobbs - KC2G
May 28 at 21:02
add a comment
|
$begingroup$
The Maidenhead locator system (which you correctly tagged) is described in detail in this Wikipedia page.
A short summary from that page is:
To summarise:
- Character pairs encode longitude first, and then latitude.
- The first pair (a field) encodes with base 18 and the letters "A" to "R".
- The second pair (square) encodes with base 10 and the digits "0" to "9".
- The third pair (subsquare) encodes with base 24 and the letters "a" to "x".
- The fourth pair (extended square) encodes with base 10 and the digits "0" to "9".
- The fifth and subsequent pairs are not formally defined, but recycling the third and fourth pair algorithms is one possible definition: BL11bh16oo66
On shortwave frequencies, positions are reported at square precision, and on VHF and UHF, subsquare precision is used. More precise position reports are very rarely used.
Note that this means the formal standard does not define anything past the first eight characters (four pairs), but that people tend to extend the system used in the third and fourth pair if they need to be more accurate.
Also note that this extension (only as far as five pairs, or ten characters) is the one used at the APRS website.
answered May 26 at 10:33
Scott Earle♦Scott Earle
3,1051 gold badge10 silver badges23 bronze badges
$endgroup$
$begingroup$
But, from what I can see on the Wikipedia page, there's only the reference to the 6 character system there. I don't see a reference to the 8 or 10 character versions.
$endgroup$
– AndrejaKo
May 26 at 10:38
1
$begingroup$
@AndrejaKo the quoted material covers 8 characters and discusses the possibility of more.
$endgroup$
– hobbs - KC2G
May 28 at 21:02
add a comment
|
$begingroup$
The Maidenhead locator system (which you correctly tagged) is described in detail in this Wikipedia page.
A short summary from that page is:
To summarise:
- Character pairs encode longitude first, and then latitude.
- The first pair (a field) encodes with base 18 and the letters "A" to "R".
- The second pair (square) encodes with base 10 and the digits "0" to "9".
- The third pair (subsquare) encodes with base 24 and the letters "a" to "x".
- The fourth pair (extended square) encodes with base 10 and the digits "0" to "9".
- The fifth and subsequent pairs are not formally defined, but recycling the third and fourth pair algorithms is one possible definition: BL11bh16oo66
On shortwave frequencies, positions are reported at square precision, and on VHF and UHF, subsquare precision is used. More precise position reports are very rarely used.
Note that this means the formal standard does not define anything past the first eight characters (four pairs), but that people tend to extend the system used in the third and fourth pair if they need to be more accurate.
Also note that this extension (only as far as five pairs, or ten characters) is the one used at the APRS website.
answered May 26 at 10:33
Scott Earle♦Scott Earle
3,1051 gold badge10 silver badges23 bronze badges
$endgroup$
The Maidenhead locator system (which you correctly tagged) is described in detail in this Wikipedia page.
A short summary from that page is:
To summarise:
- Character pairs encode longitude first, and then latitude.
- The first pair (a field) encodes with base 18 and the letters "A" to "R".
- The second pair (square) encodes with base 10 and the digits "0" to "9".
- The third pair (subsquare) encodes with base 24 and the letters "a" to "x".
- The fourth pair (extended square) encodes with base 10 and the digits "0" to "9".
- The fifth and subsequent pairs are not formally defined, but recycling the third and fourth pair algorithms is one possible definition: BL11bh16oo66
On shortwave frequencies, positions are reported at square precision, and on VHF and UHF, subsquare precision is used. More precise position reports are very rarely used.
Note that this means the formal standard does not define anything past the first eight characters (four pairs), but that people tend to extend the system used in the third and fourth pair if they need to be more accurate.
Also note that this extension (only as far as five pairs, or ten characters) is the one used at the APRS website.
answered May 26 at 10:33
Scott Earle♦Scott Earle
3,1051 gold badge10 silver badges23 bronze badges
edited May 26 at 10:46
answered May 26 at 10:33
Scott Earle♦Scott Earle
3,1051 gold badge10 silver badges23 bronze badges
answered May 26 at 10:33
Scott Earle♦Scott Earle
3,1051 gold badge10 silver badges23 bronze badges
answered May 26 at 10:33
Scott Earle♦Scott Earle
3,1051 gold badge10 silver badges23 bronze badges
3,1051 gold badge10 silver badges23 bronze badges
$begingroup$
But, from what I can see on the Wikipedia page, there's only the reference to the 6 character system there. I don't see a reference to the 8 or 10 character versions.
$endgroup$
– AndrejaKo
May 26 at 10:38
1
$begingroup$
@AndrejaKo the quoted material covers 8 characters and discusses the possibility of more.
$endgroup$
– hobbs - KC2G
May 28 at 21:02
add a comment
|
$begingroup$
But, from what I can see on the Wikipedia page, there's only the reference to the 6 character system there. I don't see a reference to the 8 or 10 character versions.
$endgroup$
– AndrejaKo
May 26 at 10:38
1
$begingroup$
@AndrejaKo the quoted material covers 8 characters and discusses the possibility of more.
$endgroup$
– hobbs - KC2G
May 28 at 21:02
$begingroup$
But, from what I can see on the Wikipedia page, there's only the reference to the 6 character system there. I don't see a reference to the 8 or 10 character versions.
$endgroup$
– AndrejaKo
May 26 at 10:38
$begingroup$
But, from what I can see on the Wikipedia page, there's only the reference to the 6 character system there. I don't see a reference to the 8 or 10 character versions.
$endgroup$
– AndrejaKo
May 26 at 10:38
1
1
$begingroup$
@AndrejaKo the quoted material covers 8 characters and discusses the possibility of more.
$endgroup$
– hobbs - KC2G
May 28 at 21:02
$begingroup$
@AndrejaKo the quoted material covers 8 characters and discusses the possibility of more.
$endgroup$
– hobbs - KC2G
May 28 at 21:02
add a comment
|
$begingroup$
The Maidenhead system breaks down a grid into increasingly smaller chunks. The fourth pair is defined as an evenly spaced 100 square grid, or 10x10. This site has an excellent image that breaks that down for you:
In this picture, the black box outline is MK80ht. You can see this box was further subdivided, and the user's location of Kalpathy, India is located in MK80ht80.
As noted by the Wikipedia article, there is no formal definition for anything smaller than that, however some users apparently recycle the formula for the third and fourth pairs if needed:
- The first pair (a field) encodes with base 18 and the letters "A" to "R".
- The second pair (square) encodes with base 10 and the digits "0" to "9".
- The third pair (subsquare) encodes with base 24 and the letters "a" to "x".
- The fourth pair (extended square) encodes with base 10 and the digits "0" to "9".
- The fifth and subsequent pairs are not formally defined, but recycling the third and fourth pair algorithms is one possible
definition
answered May 26 at 12:34
SandPiperSandPiper
4891 gold badge3 silver badges17 bronze badges
$endgroup$
add a comment
|
$begingroup$
The Maidenhead system breaks down a grid into increasingly smaller chunks. The fourth pair is defined as an evenly spaced 100 square grid, or 10x10. This site has an excellent image that breaks that down for you:
In this picture, the black box outline is MK80ht. You can see this box was further subdivided, and the user's location of Kalpathy, India is located in MK80ht80.
As noted by the Wikipedia article, there is no formal definition for anything smaller than that, however some users apparently recycle the formula for the third and fourth pairs if needed:
- The first pair (a field) encodes with base 18 and the letters "A" to "R".
- The second pair (square) encodes with base 10 and the digits "0" to "9".
- The third pair (subsquare) encodes with base 24 and the letters "a" to "x".
- The fourth pair (extended square) encodes with base 10 and the digits "0" to "9".
- The fifth and subsequent pairs are not formally defined, but recycling the third and fourth pair algorithms is one possible
definition
answered May 26 at 12:34
SandPiperSandPiper
4891 gold badge3 silver badges17 bronze badges
$endgroup$
add a comment
|
$begingroup$
The Maidenhead system breaks down a grid into increasingly smaller chunks. The fourth pair is defined as an evenly spaced 100 square grid, or 10x10. This site has an excellent image that breaks that down for you:
In this picture, the black box outline is MK80ht. You can see this box was further subdivided, and the user's location of Kalpathy, India is located in MK80ht80.
As noted by the Wikipedia article, there is no formal definition for anything smaller than that, however some users apparently recycle the formula for the third and fourth pairs if needed:
- The first pair (a field) encodes with base 18 and the letters "A" to "R".
- The second pair (square) encodes with base 10 and the digits "0" to "9".
- The third pair (subsquare) encodes with base 24 and the letters "a" to "x".
- The fourth pair (extended square) encodes with base 10 and the digits "0" to "9".
- The fifth and subsequent pairs are not formally defined, but recycling the third and fourth pair algorithms is one possible
definition
answered May 26 at 12:34
SandPiperSandPiper
4891 gold badge3 silver badges17 bronze badges
$endgroup$
The Maidenhead system breaks down a grid into increasingly smaller chunks. The fourth pair is defined as an evenly spaced 100 square grid, or 10x10. This site has an excellent image that breaks that down for you:
In this picture, the black box outline is MK80ht. You can see this box was further subdivided, and the user's location of Kalpathy, India is located in MK80ht80.
As noted by the Wikipedia article, there is no formal definition for anything smaller than that, however some users apparently recycle the formula for the third and fourth pairs if needed:
- The first pair (a field) encodes with base 18 and the letters "A" to "R".
- The second pair (square) encodes with base 10 and the digits "0" to "9".
- The third pair (subsquare) encodes with base 24 and the letters "a" to "x".
- The fourth pair (extended square) encodes with base 10 and the digits "0" to "9".
- The fifth and subsequent pairs are not formally defined, but recycling the third and fourth pair algorithms is one possible
definition
answered May 26 at 12:34
SandPiperSandPiper
4891 gold badge3 silver badges17 bronze badges
edited May 26 at 12:43
answered May 26 at 12:34
SandPiperSandPiper
4891 gold badge3 silver badges17 bronze badges
answered May 26 at 12:34
SandPiperSandPiper
4891 gold badge3 silver badges17 bronze badges
answered May 26 at 12:34
SandPiperSandPiper
4891 gold badge3 silver badges17 bronze badges
4891 gold badge3 silver badges17 bronze badges
add a comment
|
add a comment
|
$begingroup$
A recommendation for a formal definition of the 10 character system is available in the IARU-R1 VHF Handbook.
Here's the relevant quote:
3.7 Proposals to Clarify and Standardise the IARU Locator, including
higher Accuracy positioning
The definition of the existing 8-character scheme should be extended
by adding a further division into 24 lettered squares to give a
10-character locator allowing a positioning accuracy of around 13
metres. Even higher resolution use for future appli-cations should be
defined by successively sub-dividing in the same way; alternating 10
and 24 subdivisions using numbers and letter pairs.When the locator is specified at lower resolutions, e.g. 6 characters
such as in VHF contests, the centre of the squaroid at that
resolution should be taken. This is equivalent to, for example,
appending the 6-digit location IO90IV with the mid-range char-acters
44LL to give IO90IV44LL for the purposes of calculation. A quoted
locator of IO90IV58 would have “LL” appended for the calculation.- That the WGS84 worldwide spheroid be the standard mapping be used for
all locator conversions. - IARU Locators should always be quoted and used employing all Upper
Case (Capital) letters.
answered Jul 20 at 19:04
AndrejaKoAndrejaKo
1,9112 gold badges10 silver badges23 bronze badges
$endgroup$
add a comment
|
$begingroup$
A recommendation for a formal definition of the 10 character system is available in the IARU-R1 VHF Handbook.
Here's the relevant quote:
3.7 Proposals to Clarify and Standardise the IARU Locator, including
higher Accuracy positioning
The definition of the existing 8-character scheme should be extended
by adding a further division into 24 lettered squares to give a
10-character locator allowing a positioning accuracy of around 13
metres. Even higher resolution use for future appli-cations should be
defined by successively sub-dividing in the same way; alternating 10
and 24 subdivisions using numbers and letter pairs.When the locator is specified at lower resolutions, e.g. 6 characters
such as in VHF contests, the centre of the squaroid at that
resolution should be taken. This is equivalent to, for example,
appending the 6-digit location IO90IV with the mid-range char-acters
44LL to give IO90IV44LL for the purposes of calculation. A quoted
locator of IO90IV58 would have “LL” appended for the calculation.- That the WGS84 worldwide spheroid be the standard mapping be used for
all locator conversions. - IARU Locators should always be quoted and used employing all Upper
Case (Capital) letters.
answered Jul 20 at 19:04
AndrejaKoAndrejaKo
1,9112 gold badges10 silver badges23 bronze badges
$endgroup$
add a comment
|
$begingroup$
A recommendation for a formal definition of the 10 character system is available in the IARU-R1 VHF Handbook.
Here's the relevant quote:
3.7 Proposals to Clarify and Standardise the IARU Locator, including
higher Accuracy positioning
The definition of the existing 8-character scheme should be extended
by adding a further division into 24 lettered squares to give a
10-character locator allowing a positioning accuracy of around 13
metres. Even higher resolution use for future appli-cations should be
defined by successively sub-dividing in the same way; alternating 10
and 24 subdivisions using numbers and letter pairs.When the locator is specified at lower resolutions, e.g. 6 characters
such as in VHF contests, the centre of the squaroid at that
resolution should be taken. This is equivalent to, for example,
appending the 6-digit location IO90IV with the mid-range char-acters
44LL to give IO90IV44LL for the purposes of calculation. A quoted
locator of IO90IV58 would have “LL” appended for the calculation.- That the WGS84 worldwide spheroid be the standard mapping be used for
all locator conversions. - IARU Locators should always be quoted and used employing all Upper
Case (Capital) letters.
answered Jul 20 at 19:04
AndrejaKoAndrejaKo
1,9112 gold badges10 silver badges23 bronze badges
$endgroup$
A recommendation for a formal definition of the 10 character system is available in the IARU-R1 VHF Handbook.
Here's the relevant quote:
3.7 Proposals to Clarify and Standardise the IARU Locator, including
higher Accuracy positioning
The definition of the existing 8-character scheme should be extended
by adding a further division into 24 lettered squares to give a
10-character locator allowing a positioning accuracy of around 13
metres. Even higher resolution use for future appli-cations should be
defined by successively sub-dividing in the same way; alternating 10
and 24 subdivisions using numbers and letter pairs.When the locator is specified at lower resolutions, e.g. 6 characters
such as in VHF contests, the centre of the squaroid at that
resolution should be taken. This is equivalent to, for example,
appending the 6-digit location IO90IV with the mid-range char-acters
44LL to give IO90IV44LL for the purposes of calculation. A quoted
locator of IO90IV58 would have “LL” appended for the calculation.- That the WGS84 worldwide spheroid be the standard mapping be used for
all locator conversions. - IARU Locators should always be quoted and used employing all Upper
Case (Capital) letters.
answered Jul 20 at 19:04
AndrejaKoAndrejaKo
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answered Jul 20 at 19:04
AndrejaKoAndrejaKo
1,9112 gold badges10 silver badges23 bronze badges
answered Jul 20 at 19:04
AndrejaKoAndrejaKo
1,9112 gold badges10 silver badges23 bronze badges
answered Jul 20 at 19:04
AndrejaKoAndrejaKo
1,9112 gold badges10 silver badges23 bronze badges
1,9112 gold badges10 silver badges23 bronze badges
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