| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BD4SBH | 952 | 29.92 % | | 1270 | 26.33 % | | 2 | C C D C C | AA1ON | 776 | 24.39 % | | 1124 | 23.30 % | | 3 | C C D C | AA1K | 588 | 18.48 % | | 1107 | 22.95 % | | 4 | C D C C | E7AA | 399 | 12.54 % | | 633 | 13.12 % | | 5 | C D C C C | C6AGU | 248 | 7.79 % | | 340 | 7.05 % | | 6 | C D D C | A44A | 40 | 1.26 % | | 69 | 1.43 % | | 7 | C D C | B0A | 37 | 1.16 % | | 71 | 1.47 % | | 8 | C D D C C | A71BX | 37 | 1.16 % | | 48 | 1.00 % | | 9 | D C D C C | 3B9KW | 32 | 1.01 % | | 53 | 1.10 % | | 10 | D C D C | 3B8M | 26 | 0.82 % | | 52 | 1.08 % | | 11 | D C D C C C | 2E0CVN | 16 | 0.50 % | | 20 | 0.41 % | | 12 | C C D / C C D C C C | CT7/DL6IAK | 4 | 0.13 % | | 4 | 0.08 % | | 13 | C D D C C C | E74FRS | 3 | 0.09 % | | 3 | 0.06 % | | 14 | C C D C C C / C C C | EA7AAW/QRP | 2 | 0.06 % | | 2 | 0.04 % | | 15 | C C D C C / C C C | EA1GT/QRP | 2 | 0.06 % | | 3 | 0.06 % | | 16 | C C D / C D C C C | EA7/G4BJM | 2 | 0.06 % | | 4 | 0.08 % | | 17 | C C D / C C D C C | IS0/OM2TW | 2 | 0.06 % | | 2 | 0.04 % | | 18 | C C D C / D | RL8C/2 | 2 | 0.06 % | | 3 | 0.06 % | | 19 | C C D C C C / D | JA8KSW/1 | 2 | 0.06 % | | 2 | 0.04 % | | 20 | C D D / C C D C C C | A65/DL2RMC | 1 | 0.03 % | | 2 | 0.04 % | | 21 | C D C C C / C | F6GNP/M | 1 | 0.03 % | | 1 | 0.02 % | | 22 | D C D C C C / D | 7K1MAG/2 | 1 | 0.03 % | | 2 | 0.04 % | | 23 | C C D D C C C C C | HG22TISZA | 1 | 0.03 % | | 1 | 0.02 % | | 24 | C C D D C C | HB75SG | 1 | 0.03 % | | 1 | 0.02 % | | 25 | D C / C C D C C | 4L/LY4ZZ | 1 | 0.03 % | | 1 | 0.02 % | | 26 | C D C C C / D | K4ANA/0 | 1 | 0.03 % | | 1 | 0.02 % | | 27 | C C / C D D C | ON/S58J | 1 | 0.03 % | | 1 | 0.02 % | | 28 | C C D C / C C | RD1A/MM | 1 | 0.03 % | | 1 | 0.02 % | | 29 | C C D C C C / C | HB9HBY/P | 1 | 0.03 % | | 1 | 0.02 % | | 30 | C C D D C C C | SN95PRK | 1 | 0.03 % | | 1 | 0.02 % | | 31 | C C D C C / D | TA2SE/3 | 1 | 0.03 % | | 1 | 0.02 % | |
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