| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AD4ES | 35 | 31.25 % | | 37 | 31.36 % | | 2 | C C D C | CR6K | 34 | 30.36 % | | 38 | 32.20 % | | 3 | C C D C C C | CT1BXT | 24 | 21.43 % | | 24 | 20.34 % | | 4 | C D C C C | F4DVX | 9 | 8.04 % | | 9 | 7.63 % | | 5 | C D C | G2W | 4 | 3.57 % | | 4 | 3.39 % | | 6 | C D C C | N2MM | 2 | 1.79 % | | 2 | 1.69 % | | 7 | C D D C C | A61QQ | 1 | 0.89 % | | 1 | 0.85 % | | 8 | C D C C C / D | K6DTT/1 | 1 | 0.89 % | | 1 | 0.85 % | | 9 | C C D D C C | OZ30EU | 1 | 0.89 % | | 1 | 0.85 % | | 10 | C D D C | Z35T | 1 | 0.89 % | | 1 | 0.85 % | |
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