| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C | CR6P | 51 | 44.35 % | | 66 | 50.00 % | | 2 | C C D C C | CN2AA | 33 | 28.70 % | | 33 | 25.00 % | | 3 | C C D C C C | HB9CXZ | 10 | 8.70 % | | 10 | 7.58 % | | 4 | C D D C | E74R | 7 | 6.09 % | | 7 | 5.30 % | | 5 | D C D C | 3Z7H | 3 | 2.61 % | | 4 | 3.03 % | | 6 | C D C | C4A | 2 | 1.74 % | | 3 | 2.27 % | | 7 | C C D D D C | ES100C | 2 | 1.74 % | | 2 | 1.52 % | | 8 | C D D C C | E77EE | 2 | 1.74 % | | 2 | 1.52 % | | 9 | C C D / C C D C C C | CT9/CT1BWU | 1 | 0.87 % | | 1 | 0.76 % | | 10 | C D C C C | G4IIY | 1 | 0.87 % | | 1 | 0.76 % | | 11 | D C D D C C C | 9A60KDE | 1 | 0.87 % | | 1 | 0.76 % | | 12 | C C D D C | PG90T | 1 | 0.87 % | | 1 | 0.76 % | | 13 | C D C C | R5DC | 1 | 0.87 % | | 1 | 0.76 % | |
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