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Amateur Radio Service

 

Call Sign Systems

Sequential


A unique call sign is assigned to each amateur station during the processing of its license. Each new sequentially assigned call sign is sequentially selected from the alphabetized regional-group list for the licensee's operator class and mailing address. The mailing address must be one where the licensee can receive mail delivery by the United States Postal Service. The station is reassigned its same call sign upon renewal or modification of its license, unless the licensee applies for a change to a new sequentially assigned or vanity call sign on FCC Form 605.
 
Each call sign has a one letter prefix (K, N, W) or a two letter prefix (AA-AL, KA-KZ, NA-NZ, WA-WZ) and a one, two, or three letter suffix separated by a numeral (0-9) indicating the geographic region. Two letter prefixes that are designated for regions 11-13 are not available in regions 1-10. Certain combinations of letters are not used. When the call signs in any regional-group list are exhausted, the selection is made from the next lower group. The groups are:
Group A - Amateur Extra Class
Primary stations licensed to Amateur Extra class operators.
Region Prefix Letters in Suffix
1-10K, N, or W, and two letter suffix; 2
two letter prefix with first letter A, N, K, or W1
two letter prefix with first letter A2
11AL, KL, NL, or WL1
12KP, NP, or WP1
13AH, KH, NH, or WH1
Group B - Advanced Class
Primary stations licensed to Advanced class operators.
Region Prefix Letters in Suffix
1-10Two letter prefix with first letter K, N, or W2
11AL2
12KP2
13AH2
Group C - General, Technician, and Technician Plus Classes
Primary stations licensed to General, Technician, and Technician Plus class operators.
Region Prefix Letters in Suffix
1-10K, N, or W3
11KL, NL, or WL2
12NP or WP2
13KH, NH, or WH2
Group D - Novice, Club, and Military Recreations Station
Primary stations licensed to Novice class operators, and for club and military recreation stations.
Region Prefix Letters in Suffix
1-10Two letter prefix with first letter K or W3
11KL or WL3
12KP or WP3
13 KH or WH3

Geographic Region-based Numerals
Region States & Other Areas Numeral
1 Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island and Vermont1
2 New Jersey and New York2
3 Delaware, District of Columbia, Maryland and Pennsylvania3
4 Alabama, Florida, Georgia, Kentucky, North Carolina, South Carolina, Tennessee and Virginia4
5 Arkansas, Louisiana, Mississippi, New Mexico, Oklahoma and Texas5
6 California6
7 Arizona, Idaho, Montana, Nevada, Oregon, Utah, Washington and Wyoming7
8 Michigan, Ohio and West Virginia8
9 Illinois, Indiana and Wisconsin9
10 Colorado, Iowa, Kansas, Minnesota, Missouri, Nebraska, North Dakota and South Dakota0
11 Alaska
0-9
12 Caribbean Insular areas:
Navassa Island1
Virgin Islands2
Commonwealth of Puerto Rico except Desecheo Island3 or 4
Desecheo Island5
13 Hawaii and Pacific Insular areas:
Baker or Howland Island1
Guam2
Johnston Island3
Midway Island4
Palmyra or Jarvis Island5
Kingman Reef5 followed by suffix letter K
Hawaii except Kure Island6 or 7
Kure Island7 followed by the letter K
American Samoa8
Wake, Wilkes, or Peale Island9
Commonwealth of Northern Mariana Islands0
14 (unofficial). Outside the United States 
 
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Last reviewed/updated on
3/28/2016