| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C | AH2R | 63 | 37.72 % | | 111 | 41.11 % | | 2 | C C D C C | CO2AN | 49 | 29.34 % | | 71 | 26.30 % | | 3 | C C D C C C | EA1DAV | 19 | 11.38 % | | 24 | 8.89 % | | 4 | C D D C | E70T | 12 | 7.19 % | | 30 | 11.11 % | | 5 | C D D C C | S52DD | 6 | 3.59 % | | 8 | 2.96 % | | 6 | C D C C C | C6AKQ | 5 | 2.99 % | | 5 | 1.85 % | | 7 | C D C | M0B | 4 | 2.40 % | | 7 | 2.59 % | | 8 | D C D C | 6Y2T | 4 | 2.40 % | | 7 | 2.59 % | | 9 | D C D C C | 7Z1SJ | 1 | 0.60 % | | 1 | 0.37 % | | 10 | C D / C C D C | J6/KG9N | 1 | 0.60 % | | 2 | 0.74 % | | 11 | C D D C C C | E73ESP | 1 | 0.60 % | | 1 | 0.37 % | | 12 | C D / C C D C C | E7/KU1CW | 1 | 0.60 % | | 1 | 0.37 % | | 13 | C C D / C D C C | VP9/W6PH | 1 | 0.60 % | | 2 | 0.74 % | |
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