| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA4NP | 98 | 38.28 % | | 103 | 39.16 % | | 2 | C C D C C C | DG3BCZ | 66 | 25.78 % | | 67 | 25.48 % | | 3 | C C D C | CR5O | 48 | 18.75 % | | 48 | 18.25 % | | 4 | C D C C C | F5SGI | 15 | 5.86 % | | 16 | 6.08 % | | 5 | C D C C | F5IN | 6 | 2.34 % | | 6 | 2.28 % | | 6 | C D D C | E72U | 5 | 1.95 % | | 5 | 1.90 % | | 7 | C D D C C | E77EA | 4 | 1.56 % | | 4 | 1.52 % | | 8 | C D C | M1X | 3 | 1.17 % | | 3 | 1.14 % | | 9 | D C D C C | 9A2EY | 3 | 1.17 % | | 3 | 1.14 % | | 10 | D C D C | 9A2X | 2 | 0.78 % | | 2 | 0.76 % | | 11 | D C / C D C C C | 9A/F5SNJ | 1 | 0.39 % | | 1 | 0.38 % | | 12 | C D / C D D C | E7/Z35M | 1 | 0.39 % | | 1 | 0.38 % | | 13 | C C D D D C C | HG200IR | 1 | 0.39 % | | 1 | 0.38 % | | 14 | C C D C C / C | DL4AC/P | 1 | 0.39 % | | 1 | 0.38 % | | 15 | C C D / C C D C C | TA4/OH2KW | 1 | 0.39 % | | 1 | 0.38 % | | 16 | C C D C C / C C C | YU1LM/QRP | 1 | 0.39 % | | 1 | 0.38 % | |
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