| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA2GF | 142 | 27.57 % | | 142 | 27.36 % | | 2 | C C D C C C | CT1FOQ | 129 | 25.05 % | | 129 | 24.86 % | | 3 | C C D C | AA3B | 121 | 23.50 % | | 121 | 23.31 % | | 4 | C D C C | K0FX | 45 | 8.74 % | | 45 | 8.67 % | | 5 | C D C C C | F6BLP | 44 | 8.54 % | | 44 | 8.48 % | | 6 | C D D C | C37N | 11 | 2.14 % | | 11 | 2.12 % | | 7 | D C D C | 3Z9W | 6 | 1.17 % | | 6 | 1.16 % | | 8 | C D C | G2E | 3 | 0.58 % | | 3 | 0.58 % | | 9 | C D D C C | E74HJ | 3 | 0.58 % | | 3 | 0.58 % | | 10 | C C D C / D | NE8O/4 | 2 | 0.39 % | | 2 | 0.39 % | | 11 | C C D D D C C | DB100FK | 2 | 0.39 % | | 2 | 0.39 % | | 12 | D C D C C C | 5B4AIF | 2 | 0.39 % | | 2 | 0.39 % | | 13 | D C D D C | 9A30T | 1 | 0.19 % | | 1 | 0.19 % | | 14 | D C D C C | 9H1CG | 1 | 0.19 % | | 1 | 0.19 % | | 15 | C C / C C D C C | ER/UT1ZZ | 1 | 0.19 % | | 1 | 0.19 % | | 16 | C C D D C | OH10A | 1 | 0.19 % | | 1 | 0.19 % | | 17 | C D / C D C C C | S5/M0MPM | 1 | 0.19 % | | 1 | 0.19 % | |
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