| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA1VX | 965 | 31.76 % | | 1895 | 35.95 % | | 2 | C C D C C C | BH4IGO | 964 | 31.73 % | | 1391 | 26.39 % | | 3 | C C D C | AA3B | 409 | 13.46 % | | 923 | 17.51 % | | 4 | C D C C | B4HQ | 240 | 7.90 % | | 351 | 6.66 % | | 5 | C D C C C | F1AGR | 236 | 7.77 % | | 300 | 5.69 % | | 6 | D C D C C | 3B8HC | 41 | 1.35 % | | 86 | 1.63 % | | 7 | C D D C C | A41PG | 34 | 1.12 % | | 68 | 1.29 % | | 8 | C D D C | E71W | 25 | 0.82 % | | 53 | 1.01 % | | 9 | D C D C | 3Z1K | 19 | 0.63 % | | 46 | 0.87 % | | 10 | D C D C C C | 2E0BPU | 17 | 0.56 % | | 25 | 0.47 % | | 11 | C D C | B7Q | 12 | 0.39 % | | 32 | 0.61 % | | 12 | C C D C C / C | DF0ID/P | 8 | 0.26 % | | 10 | 0.19 % | | 13 | C C D C C C / C | DL3YCW/P | 8 | 0.26 % | | 10 | 0.19 % | | 14 | C D C C C / C | F5RHD/P | 7 | 0.23 % | | 7 | 0.13 % | | 15 | C C D C C C / D | IK3UNA/1 | 4 | 0.13 % | | 6 | 0.11 % | | 16 | C D C C / D | R7RF/6 | 4 | 0.13 % | | 4 | 0.08 % | | 17 | C C D D C C C | PV70FEB | 3 | 0.10 % | | 3 | 0.06 % | | 18 | C C D D C | OG55W | 3 | 0.10 % | | 6 | 0.11 % | | 19 | C C D C / D | RQ4D/8 | 3 | 0.10 % | | 3 | 0.06 % | | 20 | C C D C C / D | ES5TF/2 | 3 | 0.10 % | | 3 | 0.06 % | | 21 | C D D C C C | S54MTB | 3 | 0.10 % | | 6 | 0.11 % | | 22 | C C D C C C / C C C |
EA7AAW/QRP | 3 | 0.10 % | | 3 | 0.06 % | | 23 | C C / C C D C C | OZ/DF2SD | 2 | 0.07 % | | 2 | 0.04 % | | 24 | C C D D D C C | AT150HQ | 2 | 0.07 % | | 3 | 0.06 % | | 25 | C C D C / C | DM7C/P | 1 | 0.03 % | | 2 | 0.04 % | | 26 | C C D / C C D C | EA3/RK5D | 1 | 0.03 % | | 1 | 0.02 % | | 27 | D C / C D D C C / C C C | 9A/S57KM/QRP | 1 | 0.03 % | | 1 | 0.02 % | | 28 | C / C D D C | F/E72T | 1 | 0.03 % | | 4 | 0.08 % | | 29 | D C D C C / C | 9A1SZ/P | 1 | 0.03 % | | 1 | 0.02 % | | 30 | D C D / C C D C C C |
9M2/JE1SCJ | 1 | 0.03 % | | 1 | 0.02 % | | 31 | C C D D C C C C | DL65DARC | 1 | 0.03 % | | 2 | 0.04 % | | 32 | C C D / C C D C C C |
IT9/IZ2WFL | 1 | 0.03 % | | 1 | 0.02 % | | 33 | C D C C C / D | K9QVB/9 | 1 | 0.03 % | | 1 | 0.02 % | | 34 | C D C C / C C | N1TO/MM | 1 | 0.03 % | | 1 | 0.02 % | | 35 | C C D C / C C D | NY4G/VY2 | 1 | 0.03 % | | 1 | 0.02 % | | 36 | C C D C C C / C / C C | DL5KCI/M/PA | 1 | 0.03 % | | 1 | 0.02 % | | 37 | C C / C D C C | EI/W5GN | 1 | 0.03 % | | 3 | 0.06 % | | 38 | D C / C D D C / C | 9A/S51J/P | 1 | 0.03 % | | 1 | 0.02 % | | 39 | C C / C C D C | DL/AG7N | 1 | 0.03 % | | 1 | 0.02 % | | 40 | C C D C C C C | DL0WRTC | 1 | 0.03 % | | 2 | 0.04 % | | 41 | C C D C C D | DL1CB1 | 1 | 0.03 % | | 1 | 0.02 % | | 42 | C C / C C D C C C | SP/SM0JHF | 1 | 0.03 % | | 2 | 0.04 % | | 43 | C C D D D C C C | SP100WTD | 1 | 0.03 % | | 1 | 0.02 % | | 44 | C C D C C C / C C | SP5LJP/MM | 1 | 0.03 % | | 1 | 0.02 % | | 45 | C C D / C D D C C | SV9/S55OO | 1 | 0.03 % | | 1 | 0.02 % | | 46 | C C D D D C C C C | VE690IARU | 1 | 0.03 % | | 1 | 0.02 % | | 47 | C C D C C / C C C | YU1LM/QRP | 1 | 0.03 % | | 4 | 0.08 % | |
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