JM40 Maidenhead Grid Square


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Latitude, longitude, and maindenhead grid square.


View, convert, and distance your location's latitude and longitude to the maidenhead grid locator system for amatuer radio. Also, latitude and longitude for great circle path and distance. The Maidenhead Grid Locator system (also QTH) is a geographic co-ordinate system used by amateur radio operators to succinctly describe their location. The system can describe any location in the world. Latitudes and longitude can be coverted to and from the grid system. This system replaces the QRA locator system since it was only used in Europe. Other names for the grid locator are: grid squares, QTH, or grid location.



Links to popular grid square locations:



Maidenhead Grid Square
JM40aa
JM40ab
JM40ac
JM40ad
JM40ae
JM40af
JM40ag
JM40ah
JM40ai
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JM40ak
JM40al
JM40am
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JM40on
JM40oo
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JM40oq
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JM40qo
JM40qp
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JM40ra
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JM40rl
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JM40rx
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JM40tj
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JM40to
JM40tp
JM40tq
JM40tr
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JM40tu
JM40tv
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JM40ub
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JM40xp
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JM40xr
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JM40xu
JM40xv
JM40xw
JM40xx


Grid Square Locator

Enter your zip-code, city, latitude, or longitude to find your maidenhead grid square on the Google or Bing map. The largest square, two digits field encoding, e.g. CN, is 10° latitude by 20° longitude in size.

Grid Square Calculator

The grid square, two digits field and two digits square, e.g. CN87, is 1° latitude by 2° longitude in size.

Find Grid Square

The next smaller grid sub-square, with 6 digits, e.g. CN87AA, is 0.041667° latitude and 0.083334° longitude in size.



Grid valid. JM40
IPs returned: 34.204.200.74, 69.161.209.18 >>>