| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BD7ODG | 751 | 40.73 % | | 1010 | 41.75 % | | 2 | C C D C C | AA2PU | 597 | 32.38 % | | 811 | 33.53 % | | 3 | C D C C C | F4CHB | 200 | 10.85 % | | 243 | 10.05 % | | 4 | C D C C | F2IL | 124 | 6.72 % | | 145 | 5.99 % | | 5 | C C D C | AA3B | 83 | 4.50 % | | 97 | 4.01 % | | 6 | D C D C C | 4O3RB | 20 | 1.08 % | | 28 | 1.16 % | | 7 | C D D C C | E73JO | 10 | 0.54 % | | 13 | 0.54 % | | 8 | C C D C C / C C C | CT1ZC/QRP | 6 | 0.33 % | | 8 | 0.33 % | | 9 | C D D C | E72U | 6 | 0.33 % | | 9 | 0.37 % | | 10 | C C D C C C / C C C | IK4UXA/QRP | 5 | 0.27 % | | 6 | 0.25 % | | 11 | D C D C C C | 2E0FQT | 4 | 0.22 % | | 4 | 0.17 % | | 12 | C C D C C C / C | IU1DUB/M | 4 | 0.22 % | | 4 | 0.17 % | | 13 | D C D C | 4K9W | 3 | 0.16 % | | 4 | 0.17 % | | 14 | C C D C C / C | DJ9EU/P | 3 | 0.16 % | | 4 | 0.17 % | | 15 | C D C C / D | R2ET/9 | 3 | 0.16 % | | 4 | 0.17 % | | 16 | C C D D D C C | HG315VA | 2 | 0.11 % | | 3 | 0.12 % | | 17 | C D C C C / C C C | M0STN/QRP | 2 | 0.11 % | | 2 | 0.08 % | | 18 | C C / C C D C C C | HA/OE6YRG | 2 | 0.11 % | | 2 | 0.08 % | | 19 | C C D C C / D | IQ2VA/1 | 2 | 0.11 % | | 2 | 0.08 % | | 20 | C D C C C / C | F8BJK/P | 2 | 0.11 % | | 2 | 0.08 % | | 21 | C D C | G3P | 1 | 0.05 % | | 1 | 0.04 % | | 22 | C D / C D D C | E7/Z35M | 1 | 0.05 % | | 3 | 0.12 % | | 23 | C C D / C C D C C C | EA5/IZ4RCH | 1 | 0.05 % | | 1 | 0.04 % | | 24 | C C C C C | IKORE | 1 | 0.05 % | | 1 | 0.04 % | | 25 | D C D D C C C | 9A40CKG | 1 | 0.05 % | | 1 | 0.04 % | | 26 | C C D D D D C | DA2025C | 1 | 0.05 % | | 1 | 0.04 % | | 27 | C C D C C C / C C | IU1DUB/MM | 1 | 0.05 % | | 1 | 0.04 % | | 28 | C D D C C C | E21SNN | 1 | 0.05 % | | 1 | 0.04 % | | 29 | C D C C / C C C | R1AR/QRP | 1 | 0.05 % | | 2 | 0.08 % | | 30 | C / C C D C C | I/YO9HH | 1 | 0.05 % | | 1 | 0.04 % | | 31 | C C D C / D | RA3X/1 | 1 | 0.05 % | | 1 | 0.04 % | | 32 | C C D D C C C C | SN95IARU | 1 | 0.05 % | | 1 | 0.04 % | | 33 | C C D / C C D C C | SV9/SM5LW | 1 | 0.05 % | | 1 | 0.04 % | | 34 | C C D D C C | TC18GL | 1 | 0.05 % | | 1 | 0.04 % | | 35 | C C D D C C C | YU70HFG | 1 | 0.05 % | | 1 | 0.04 % | |
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