| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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| 1 | C C D C C | DD2ML | 78 | 33.48 % | | 78 | 33.05 % | | | 2 | C C D C | CR2X | 71 | 30.47 % | | 72 | 30.51 % | | | 3 | C C D C C C | DJ0MDR | 53 | 22.75 % | | 55 | 23.31 % | | | 4 | C D D C | S50A | 10 | 4.29 % | | 10 | 4.24 % | | | 5 | C D D C C | E73QI | 7 | 3.00 % | | 7 | 2.97 % | | | 6 | D C D C C | 5P5CW | 5 | 2.15 % | | 5 | 2.12 % | | | 7 | C D C C | E7DX | 3 | 1.29 % | | 3 | 1.27 % | | | 8 | C D C | G3U | 3 | 1.29 % | | 3 | 1.27 % | | | 9 | D C D C | 9A1P | 2 | 0.86 % | | 2 | 0.85 % | | | 10 | C C D C C C C | DK0WRTC | 1 | 0.43 % | | 1 | 0.42 % | |
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