| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | CT1AOZ | 264 | 31.43 % | | 317 | 31.20 % | | 2 | C C D C C | AA6RE | 248 | 29.52 % | | 299 | 29.43 % | | 3 | C D C C C | E5DNO | 74 | 8.81 % | | 85 | 8.37 % | | 4 | C C D C C / C | DF0AS/P | 42 | 5.00 % | | 55 | 5.41 % | | 5 | C C D C | AA3B | 40 | 4.76 % | | 51 | 5.02 % | | 6 | C D C C | F5IN | 34 | 4.05 % | | 40 | 3.94 % | | 7 | C C D C C C / C | DL0ABT/P | 28 | 3.33 % | | 36 | 3.54 % | | 8 | C C D C / C | DF0A/P | 27 | 3.21 % | | 31 | 3.05 % | | 9 | C D C C C / C | F6FDY/M | 15 | 1.79 % | | 21 | 2.07 % | | 10 | C D D C C | E70MD | 10 | 1.19 % | | 10 | 0.98 % | | 11 | C D C C / C | G2DX/P | 8 | 0.95 % | | 14 | 1.38 % | | 12 | D C D C C | 4Z4DX | 5 | 0.60 % | | 6 | 0.59 % | | 13 | C D C C C / C C C | F5NZY/QRP | 4 | 0.48 % | | 4 | 0.39 % | | 14 | C D D C | E79Q | 4 | 0.48 % | | 4 | 0.39 % | | 15 | C D C / C | G4C/P | 4 | 0.48 % | | 6 | 0.59 % | | 16 | C C D D C C C | LZ10WCA | 3 | 0.36 % | | 3 | 0.30 % | | 17 | C C D D D C C | DA200TF | 2 | 0.24 % | | 4 | 0.39 % | | 18 | C C D / C C D C C C | EA8/OK2BUJ | 2 | 0.24 % | | 2 | 0.20 % | | 19 | C C D C C C / C C C | HB9DES/QRP | 2 | 0.24 % | | 2 | 0.20 % | | 20 | C C D D C C | GB19CS | 2 | 0.24 % | | 2 | 0.20 % | | 21 | C D D C / C | S53Q/P | 2 | 0.24 % | | 2 | 0.20 % | | 22 | C C D C C / C C C | DL7YY/QRP | 1 | 0.12 % | | 1 | 0.10 % | | 23 | D C D C / C | 4O4A/P | 1 | 0.12 % | | 1 | 0.10 % | | 24 | C C D C C C / C C C / C ' | DL6ETB/QRP/P | 1 | 0.12 % | | 1 | 0.10 % | | 25 | D C D C C C | 9A1CBM | 1 | 0.12 % | | 1 | 0.10 % | | 26 | D C D C C C / C | 9A5MPV/P | 1 | 0.12 % | | 1 | 0.10 % | | 27 | C / C C D C C / C | F/ON6FC/P | 1 | 0.12 % | | 1 | 0.10 % | | 28 | D C / C C D C C | 9A/DL2RM | 1 | 0.12 % | | 1 | 0.10 % | | 29 | C C D D C | AM70N | 1 | 0.12 % | | 1 | 0.10 % | | 30 | C C D C C C C | EA3HBQA | 1 | 0.12 % | | 1 | 0.10 % | | 31 | C C D C C C C C | HG0FLOYD | 1 | 0.12 % | | 1 | 0.10 % | | 32 | C C D / C C D C C | IT9/ES5ZF | 1 | 0.12 % | | 2 | 0.20 % | | 33 | C / C C D C C C / C | F/ON6JUN/P | 1 | 0.12 % | | 1 | 0.10 % | | 34 | D C / C D C C C / C | 9A/G4BJM/P | 1 | 0.12 % | | 1 | 0.10 % | | 35 | C C D D C C C / C | OL10WCA/P | 1 | 0.12 % | | 1 | 0.10 % | | 36 | C C / C D D C | ON/Z35M | 1 | 0.12 % | | 1 | 0.10 % | | 37 | C C D C C / D | RA1ZZ/3 | 1 | 0.12 % | | 2 | 0.20 % | | 38 | C C D C C C / C C | IU1GAQ/MM | 1 | 0.12 % | | 1 | 0.10 % | | 39 | C C / C D C C C | SP/I4ZSQ | 1 | 0.12 % | | 1 | 0.10 % | | 40 | C C / C C D C C | YL/DK7OG | 1 | 0.12 % | | 1 | 0.10 % | | 41 | C C / C C D C C C / C | ZA/DL2RMC/P | 1 | 0.12 % | | 1 | 0.10 % | |
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