| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA1ON | 713 | 28.26 % | | 996 | 27.36 % | | 2 | C C D C C C | BG2AUE | 684 | 27.11 % | | 920 | 25.27 % | | 3 | C C D C | AA0O | 489 | 19.38 % | | 817 | 22.44 % | | 4 | C D C C | E7CW | 246 | 9.75 % | | 354 | 9.72 % | | 5 | C D C C C | C6AGU | 208 | 8.24 % | | 285 | 7.83 % | | 6 | C D C | B0A | 44 | 1.74 % | | 69 | 1.90 % | | 7 | C D D C | A44A | 36 | 1.43 % | | 49 | 1.35 % | | 8 | D C D C C | 3V8SS | 32 | 1.27 % | | 55 | 1.51 % | | 9 | C D D C C | A71BX | 30 | 1.19 % | | 37 | 1.02 % | | 10 | D C D C | 3B8M | 16 | 0.63 % | | 27 | 0.74 % | | 11 | D C D C C C | 2E0CVN | 8 | 0.32 % | | 10 | 0.27 % | | 12 | C D D C C C | E74FRS | 2 | 0.08 % | | 2 | 0.05 % | | 13 | C C D D C C C | KJ47QHL | 2 | 0.08 % | | 3 | 0.08 % | | 14 | C C D C C / C C C | EA1GT/QRP | 2 | 0.08 % | | 3 | 0.08 % | | 15 | C C D C C / C | DJ0LJ/M | 1 | 0.04 % | | 1 | 0.03 % | | 16 | C C D C C C / C | DL7USW/P | 1 | 0.04 % | | 2 | 0.05 % | | 17 | C C D / C C D C C C | EA8/GU4YOX | 1 | 0.04 % | | 1 | 0.03 % | | 18 | C C D / C D | KH7/W7 | 1 | 0.04 % | | 1 | 0.03 % | | 19 | C D / C D D C | E7/Z35M | 1 | 0.04 % | | 1 | 0.03 % | | 20 | C D C C C / C C C | M6MPC/QRP | 1 | 0.04 % | | 1 | 0.03 % | | 21 | C C / C D D C | ON/S58J | 1 | 0.04 % | | 1 | 0.03 % | | 22 | C C D / C D C C C | PJ7/G4JEC | 1 | 0.04 % | | 1 | 0.03 % | | 23 | C D C C C / D | R0QAW/3 | 1 | 0.04 % | | 2 | 0.05 % | | 24 | C D C C / C | R9OM/B | 1 | 0.04 % | | 1 | 0.03 % | | 25 | C C D / C C D C C | YO8/LZ4UU | 1 | 0.04 % | | 2 | 0.05 % | |
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