| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA5AU | 122 | 30.12 % | | 140 | 30.43 % | | 2 | C C D C C C | EA3HKA | 120 | 29.63 % | | 136 | 29.57 % | | 3 | C D C C | K0AD | 61 | 15.06 % | | 65 | 14.13 % | | 4 | C C D C | AF3D | 47 | 11.60 % | | 56 | 12.17 % | | 5 | C D C C C | G0RPM | 36 | 8.89 % | | 41 | 8.91 % | | 6 | D C D C C C | 7K4QOK | 3 | 0.74 % | | 3 | 0.65 % | | 7 | D C D C C | 4Z4DX | 2 | 0.49 % | | 2 | 0.43 % | | 8 | D C D C | 3Z6O | 2 | 0.49 % | | 2 | 0.43 % | | 9 | C C D / C C D C C C | DV1/JO7KMB | 2 | 0.49 % | | 2 | 0.43 % | | 10 | C D D C C | E73KM | 2 | 0.49 % | | 2 | 0.43 % | | 11 | C C D C C C / D | JA3MIO/1 | 2 | 0.49 % | | 2 | 0.43 % | | 12 | C D D C C C | S56VJM | 2 | 0.49 % | | 2 | 0.43 % | | 13 | C C D C C / D | EC4DX/1 | 1 | 0.25 % | | 1 | 0.22 % | | 14 | C C D D C | OH10A | 1 | 0.25 % | | 1 | 0.22 % | | 15 | C D D C | S59D | 1 | 0.25 % | | 1 | 0.22 % | | 16 | C C / C D D C | YU/S56A | 1 | 0.25 % | | 1 | 0.22 % | |
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