| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA0AW | 400 | 26.40 % | | 632 | 27.87 % | | 2 | C C D C | AA0O | 332 | 21.91 % | | 548 | 24.16 % | | 3 | C D C C | D1HQ | 287 | 18.94 % | | 435 | 19.18 % | | 4 | C C D C C C | BD4TUC | 266 | 17.56 % | | 328 | 14.46 % | | 5 | C D C C C | F4CZV | 158 | 10.43 % | | 214 | 9.44 % | | 6 | C D D C C | A71EM | 14 | 0.92 % | | 24 | 1.06 % | | 7 | C D C | C4W | 13 | 0.86 % | | 17 | 0.75 % | | 8 | D C D C C | 4X6FR | 12 | 0.79 % | | 20 | 0.88 % | | 9 | C D D C | E73Y | 8 | 0.53 % | | 13 | 0.57 % | | 10 | D C D C | 3Z1K | 5 | 0.33 % | | 9 | 0.40 % | | 11 | D C D C C C | 2E0CVN | 2 | 0.13 % | | 2 | 0.09 % | | 12 | C C D D C C C | DM30RSV | 2 | 0.13 % | | 4 | 0.18 % | | 13 | C C D C C C / C | DL4HCF/P | 1 | 0.07 % | | 1 | 0.04 % | | 14 | C C D C C / C | DL7SI/P | 1 | 0.07 % | | 1 | 0.04 % | | 15 | C D / C D D C | E7/Z35M | 1 | 0.07 % | | 1 | 0.04 % | | 16 | C C D D C C | CX77SS | 1 | 0.07 % | | 1 | 0.04 % | | 17 | D C D / C D C C | 5Z4/G3AB | 1 | 0.07 % | | 1 | 0.04 % | | 18 | C D C C C / C | G4NXG/M | 1 | 0.07 % | | 1 | 0.04 % | | 19 | C C D C C / C D | KH6KG/W5 | 1 | 0.07 % | | 1 | 0.04 % | | 20 | C C D / C D C C | KP4/K7GM | 1 | 0.07 % | | 1 | 0.04 % | | 21 | C C D D | KR22 | 1 | 0.07 % | | 1 | 0.04 % | | 22 | C C D C / C D | NP4H/W2 | 1 | 0.07 % | | 1 | 0.04 % | | 23 | C C D D C | OG55W | 1 | 0.07 % | | 1 | 0.04 % | | 24 | C C D C C / C C | RA0LQ/MM | 1 | 0.07 % | | 1 | 0.04 % | | 25 | C C D C / C C | SP1R/MM | 1 | 0.07 % | | 1 | 0.04 % | | 26 | C D C C / D | W1AW/4 | 1 | 0.07 % | | 5 | 0.22 % | | 27 | C D / C C D C C | W2/EU1KI | 1 | 0.07 % | | 3 | 0.13 % | | 28 | C C D C / D | ZR2A/4 | 1 | 0.07 % | | 1 | 0.04 % | |
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