| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BA7LIP | 1953 | 48.19 % | | 3501 | 50.19 % | | 2 | C C D C C | AA2ZW | 1012 | 24.97 % | | 1671 | 23.95 % | | 3 | C D C C C | F1ABG | 505 | 12.46 % | | 857 | 12.28 % | | 4 | C C D C | AA3B | 202 | 4.98 % | | 294 | 4.21 % | | 5 | C D C C | D1FF | 121 | 2.99 % | | 191 | 2.74 % | | 6 | D C D C C C | 2E0BJL | 42 | 1.04 % | | 77 | 1.10 % | | 7 | D C D C C | 4L1MV | 40 | 0.99 % | | 71 | 1.02 % | | 8 | C D D C | A65D | 27 | 0.67 % | | 37 | 0.53 % | | 9 | C D D C C | A41ZZ | 23 | 0.57 % | | 36 | 0.52 % | | 10 | C C D C C C / C C C | DO1JMA/QRP | 18 | 0.44 % | | 19 | 0.27 % | | 11 | D C D C | 3Z6O | 14 | 0.35 % | | 69 | 0.99 % | | 12 | C C D D C C C C | AO23YOTA | 10 | 0.25 % | | 21 | 0.30 % | | 13 | C C D C C C / C | DG7YEO/P | 10 | 0.25 % | | 12 | 0.17 % | | 14 | C C D C C C C | EM7YOTA | 9 | 0.22 % | | 23 | 0.33 % | | 15 | C C D D C C C | DL50DAH | 6 | 0.15 % | | 13 | 0.19 % | | 16 | C D C C C / C C C | F5APG/QRP | 5 | 0.12 % | | 5 | 0.07 % | | 17 | C C D / C C D C C | CT9/DM9EE | 4 | 0.10 % | | 5 | 0.07 % | | 18 | C D C C C / C | F5JXS/P | 4 | 0.10 % | | 6 | 0.09 % | | 19 | C C / C C D C C | DL/UY5AB | 4 | 0.10 % | | 6 | 0.09 % | | 20 | C C D C C C / D | IK1WNO/1 | 4 | 0.10 % | | 5 | 0.07 % | | 21 | C C / C C D C C C | DL/UA1AFE | 3 | 0.07 % | | 3 | 0.04 % | | 22 | C C D C C / C C C | EA1GT/QRP | 3 | 0.07 % | | 4 | 0.06 % | | 23 | C C D D D C C | DL100TC | 3 | 0.07 % | | 3 | 0.04 % | | 24 | C D D C C C | E29TGW | 2 | 0.05 % | | 2 | 0.03 % | | 25 | C C D D D C C C | DB100RDF | 2 | 0.05 % | | 3 | 0.04 % | | 26 | C C D C C / D | IQ1QQ/1 | 2 | 0.05 % | | 3 | 0.04 % | | 27 | C D D D C | R120A | 2 | 0.05 % | | 3 | 0.04 % | | 28 | C C D C C / C | ER1SN/P | 2 | 0.05 % | | 3 | 0.04 % | | 29 | D C D D C C | 3Z70FI | 1 | 0.02 % | | 3 | 0.04 % | | 30 | C C D C C / C C C D C | DL2DT/QRP3W | 1 | 0.02 % | | 1 | 0.01 % | | 31 | C C D / C C D C C C | EA6/DK1XAM | 1 | 0.02 % | | 4 | 0.06 % | | 32 | D C D D D C C C | 9A150TEC | 1 | 0.02 % | | 1 | 0.01 % | | 33 | C D D C C C / C | I49SNL/R | 1 | 0.02 % | | 1 | 0.01 % | | 34 | D C D D C C C | 4K50DHC | 1 | 0.02 % | | 1 | 0.01 % | | 35 | C C C C C | ABJIK | 1 | 0.02 % | | 1 | 0.01 % | | 36 | C C D C C C / C C D | IK2ISX/IN3 | 1 | 0.02 % | | 2 | 0.03 % | | 37 | C C C D C C C | IIU7GSJ | 1 | 0.02 % | | 1 | 0.01 % | | 38 | C C C C C C | IWORNA | 1 | 0.02 % | | 1 | 0.01 % | | 39 | C D C | M4T | 1 | 0.02 % | | 1 | 0.01 % | | 40 | C D C C / D | N1UL/2 | 1 | 0.02 % | | 3 | 0.04 % | | 41 | C C D D C C | OG70AD | 1 | 0.02 % | | 1 | 0.01 % | | 42 | C C D C / C | OS4K/P | 1 | 0.02 % | | 1 | 0.01 % | | 43 | C D D C C C C | E71YOTA | 1 | 0.02 % | | 1 | 0.01 % | | 44 | C D D D D C C | R1941MB | 1 | 0.02 % | | 3 | 0.04 % | | 45 | C D C C / C | R6FS/M | 1 | 0.02 % | | 1 | 0.01 % | | 46 | C C D C / C C C | RV7F/QRP | 1 | 0.02 % | | 1 | 0.01 % | | 47 | C D D D C C C | S524PMC | 1 | 0.02 % | | 2 | 0.03 % | | 48 | C C / C D C C C | UN/R0AAE | 1 | 0.02 % | | 1 | 0.01 % | | 49 | C D C C / C C D | W1AW/KP4 | 1 | 0.02 % | | 2 | 0.03 % | |
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