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Grids

Grids

  • Directions-

    Find the information you need about grids below.

  • VHF/UHF Century Club Awards+

  • How to determine your grid locator+

  • Thanks to Central States+

  • Award Mechanics+

Table 1: How to Determine Your Grid Location *

* For those geographical areas not encompassed here, a complete explanation appears in the April 1982 issue of The Lunar Letter, entitled Worldwide QTH Locator System Proposed by Region 1, by Lance Collister, WA1JXN.

1st and 2nd Characters: (Check the North American Grid Locator or the ARRL World Grid Locator Atlas.)

3rd Character: Take the number of whole degrees west longitude, and consult the following chart:

Degrees West Longitude Third Character Degrees West Longitude Third Character Degrees West Longitude Third Character
60-61 9 88-89 5 114-115 2
62-63 8 90-91 4 116-117 1
64-65 7 92-93 3 118-119 0
66-67 6 94-95 2 120-121 9
68-69 5 96-97 1 122-123 8
70-71 4 98-99 0 124-125 7
72-73 3 100-101 9 126-127 6
74-75 2 102-103 8 128-129 5
76-77 1 104-105 7 130-131 4
78-79 0 106-107 6 132-133 3
80-81 9 108-109 5 134-135 2
82-83 8 110-111 4 136-137 1
84-85 7 112-113 3 138-139 0
86-87 6

4th Character: This number is the same as the 2nd single digit of your latitude. For example, if your latitude is 41 degrees N, the 4th character is 1; for 29 degrees N, it is 9, etc. This four-character (2-letter, 2 number) designator indicates your 2 degree × 1 degree locator for VUCC award purposes.
 

Table 2: More Precise Locator

To indicate the location more precisely, the addition of 5th and 6th characters will define the sublocator, measuring 4 × 3 miles. Longitude-latitude coordinates on maps, such as U.S. Department of the Interior Surveys, can be extrapolated to the nearest tenth of a minute, necessary for this level of locator precision. This is not necessary in the VUCC awards program.

5th Character: If your number of degrees longitude is an odd number, see Figure A. If your number of degrees longitude is an even number, see figure B.

 

Odd Longitude Degrees (Figure A)

Minutes W. Longitude 5th Character
0-5 L
5-10 K
10-15 J
15-20 I
20-25 H
25-30 G
30-35 F
35-40 E
40-45 D
45-50 C
50-55 B
55-60 A

 

Even Longitude Degrees (Figure B)

Minutes W. Longitude 5th Character
0-5 X
5-10 W
10-15 V
15-20 U
20-25 T
25-30 S
30-35 R
35-40 Q
40-45 P
45-50 O
50-55 N
55-60 M

6th Character: Take the number of minutes of latitude (following the number of degrees) and consult the following chart.

Minutes N. Latitude 6th Character
0-2.5 A
2.5-5.0 B
5.0-7.5 C
7.5-10.0 D
10.0-12.5 E
12.5-15.0 F
15.0-17.5 G
17.5-20.0 H
20.0-22.5 I
22.5-25.0 J
25.0-27.5 K
27.5-30.0 L
30.0-32.5 M
32.5-35.0 N
35.0-37.5 O
37.5-40.0 P
40.0-42.5 Q
42.5-45.0 R
45.0-47.5 S
47.5-50.0 T
50.0-52.5 U
52.5-55.0 V
55.0-57.5 W
57.5-60.0 X

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