| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BD2IAQ | 1128 | 34.19 % | | 1526 | 31.54 % | | 2 | C C D C C | AA4TO | 833 | 25.25 % | | 1178 | 24.34 % | | 3 | C C D C | AA3R | 579 | 17.55 % | | 972 | 20.09 % | | 4 | C D C C C | D1IND | 355 | 10.76 % | | 486 | 10.04 % | | 5 | C D C C | E7CW | 88 | 2.67 % | | 123 | 2.54 % | | 6 | D C D C C | 3A2MG | 51 | 1.55 % | | 66 | 1.36 % | | 7 | C D D C | A44A | 50 | 1.52 % | | 78 | 1.61 % | | 8 | C D D C C | A61QQ | 45 | 1.36 % | | 59 | 1.22 % | | 9 | C D C | B4Q | 40 | 1.21 % | | 91 | 1.88 % | | 10 | D C D C C C | 2E0CVN | 33 | 1.00 % | | 41 | 0.85 % | | 11 | D C D C | 3X1A | 29 | 0.88 % | | 47 | 0.97 % | | 12 | C D D C C C | E20PFE | 15 | 0.45 % | | 17 | 0.35 % | | 13 | C C D D C C C | DK65ERD | 8 | 0.24 % | | 14 | 0.29 % | | 14 | C C D D C | CR55K | 6 | 0.18 % | | 11 | 0.23 % | | 15 | C C D C C C / C C C | IU3MBY/QRP | 5 | 0.15 % | | 5 | 0.10 % | | 16 | C D C C C / C | F5SJH/P | 4 | 0.12 % | | 5 | 0.10 % | | 17 | C C D D D C C | DM775NB | 3 | 0.09 % | | 4 | 0.08 % | | 18 | D C D D C | 9A23Y | 2 | 0.06 % | | 7 | 0.14 % | | 19 | C C / C C D C C | DL/UT1AN | 2 | 0.06 % | | 4 | 0.08 % | | 20 | C C D C C C / D | JA1FXO/7 | 2 | 0.06 % | | 2 | 0.04 % | | 21 | C C D C C / C C C | IZ1YD/QRP | 2 | 0.06 % | | 2 | 0.04 % | | 22 | D C / C D C C C | 9A/W8FNG | 1 | 0.03 % | | 1 | 0.02 % | | 23 | C C D C C C / C | DG9SBZ/P | 1 | 0.03 % | | 1 | 0.02 % | | 24 | D C D C C C C | 8J1JARL | 1 | 0.03 % | | 1 | 0.02 % | | 25 | C C D D C C C C | DA23WARD | 1 | 0.03 % | | 1 | 0.02 % | | 26 | C C D C C C C D C | EX2LEPD1B | 1 | 0.03 % | | 1 | 0.02 % | | 27 | D C / C C D C C C | 3A/IK1TTD | 1 | 0.03 % | | 2 | 0.04 % | | 28 | C / C C D C C C / C | F/ON4LEX/P | 1 | 0.03 % | | 1 | 0.02 % | | 29 | C C D / C C D C | EA5/RV2A | 1 | 0.03 % | | 2 | 0.04 % | | 30 | C C D D C C | HB20BE | 1 | 0.03 % | | 1 | 0.02 % | | 31 | C / C D D C | F/E72T | 1 | 0.03 % | | 2 | 0.04 % | | 32 | C D / C D D C | E7/Z35M | 1 | 0.03 % | | 1 | 0.02 % | | 33 | D C / C C D C C | 5B/HA5PP | 1 | 0.03 % | | 1 | 0.02 % | | 34 | C C D D D C | LN100K | 1 | 0.03 % | | 1 | 0.02 % | | 35 | C C D C / D | RC2O/6 | 1 | 0.03 % | | 2 | 0.04 % | | 36 | C D D D C C C C | S509WRTC | 1 | 0.03 % | | 1 | 0.02 % | | 37 | C C D / C C D C C C | SV8/SV2CSV | 1 | 0.03 % | | 1 | 0.02 % | | 38 | C C D / C C D C C | YO8/LZ4UU | 1 | 0.03 % | | 2 | 0.04 % | | 39 | C C D C C D | YU4PT7 | 1 | 0.03 % | | 1 | 0.02 % | | 40 | C C / C D D C C | ZA/Z61DX | 1 | 0.03 % | | 1 | 0.02 % | |
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