| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA1ON | 886 | 34.49 % | | 1611 | 36.38 % | | 2 | C C D C C C | CS7AMH | 637 | 24.80 % | | 910 | 20.55 % | | 3 | C C D C | AA1K | 347 | 13.51 % | | 681 | 15.38 % | | 4 | C D C C | B1HQ | 288 | 11.21 % | | 428 | 9.67 % | | 5 | C D C C C | D1NKS | 151 | 5.88 % | | 212 | 4.79 % | | 6 | C D D C | E72U | 93 | 3.62 % | | 282 | 6.37 % | | 7 | C D D C C | A47RS | 31 | 1.21 % | | 64 | 1.45 % | | 8 | D C D C C | 4L7AA | 26 | 1.01 % | | 51 | 1.15 % | | 9 | C D C | C4W | 15 | 0.58 % | | 36 | 0.81 % | | 10 | D C D C | 3Z0X | 12 | 0.47 % | | 26 | 0.59 % | | 11 | D C D C C C | 2E0FXJ | 8 | 0.31 % | | 9 | 0.20 % | | 12 | C C D C C / C | DK2RZ/M | 6 | 0.23 % | | 8 | 0.18 % | | 13 | C C / C C D C C | DL/EA7KW | 6 | 0.23 % | | 11 | 0.25 % | | 14 | C C / C C D C C C | DL/HB9DQL | 6 | 0.23 % | | 10 | 0.23 % | | 15 | C D C C C / C | F4GKR/P | 5 | 0.19 % | | 6 | 0.14 % | | 16 | C C / C C D C | DL/HG0R | 4 | 0.16 % | | 6 | 0.14 % | | 17 | C C / C D C C | DL/K1AR | 4 | 0.16 % | | 8 | 0.18 % | | 18 | C C D C C C / C | DL1DXF/P | 3 | 0.12 % | | 4 | 0.09 % | | 19 | C D D C C C | S56WYB | 3 | 0.12 % | | 3 | 0.07 % | | 20 | C C D D D C C C | OE100RAD | 3 | 0.12 % | | 5 | 0.11 % | | 21 | C C D D C C | LM90HQ | 2 | 0.08 % | | 3 | 0.07 % | | 22 | C / C C D C C | F/DF5RF | 2 | 0.08 % | | 3 | 0.07 % | | 23 | C C D / C C D C C | EA6/DK5ON | 2 | 0.08 % | | 4 | 0.09 % | | 24 | C C D D C C C C | LM90NRRL | 2 | 0.08 % | | 2 | 0.05 % | | 25 | C C D D C | OG55W | 2 | 0.08 % | | 9 | 0.20 % | | 26 | C C D C C / C C | RA0LQ/MM | 2 | 0.08 % | | 3 | 0.07 % | | 27 | D C D D D C | 3Z100K | 1 | 0.04 % | | 1 | 0.02 % | | 28 | C D / C C D C C | I0/YO3XX | 1 | 0.04 % | | 1 | 0.02 % | | 29 | C C D D D C C | DL100BY | 1 | 0.04 % | | 2 | 0.05 % | | 30 | D C C C | 8SOC | 1 | 0.04 % | | 1 | 0.02 % | | 31 | D C / C D D C C | 9A/S57KM | 1 | 0.04 % | | 1 | 0.02 % | | 32 | C C D C / C C D | NP4G/KP2 | 1 | 0.04 % | | 1 | 0.02 % | | 33 | C C D C C / D | NU1AW/9 | 1 | 0.04 % | | 3 | 0.07 % | | 34 | D C / C C D C | 4L/RC5A | 1 | 0.04 % | | 1 | 0.02 % | | 35 | C C D C C / C D | KH6ND/W7 | 1 | 0.04 % | | 1 | 0.02 % | | 36 | C C D | OK3 | 1 | 0.04 % | | 1 | 0.02 % | | 37 | C / C D C C C | F/G0PZA | 1 | 0.04 % | | 1 | 0.02 % | | 38 | C C D C / D | RT9T/3 | 1 | 0.04 % | | 2 | 0.05 % | | 39 | C D D C C / C C | S51TA/MM | 1 | 0.04 % | | 2 | 0.05 % | | 40 | C D D C C C C | J32FIFA | 1 | 0.04 % | | 2 | 0.05 % | | 41 | C C D C / C | SE5Z/P | 1 | 0.04 % | | 1 | 0.02 % | | 42 | C C / C D C C C | SP/I4ZSQ | 1 | 0.04 % | | 3 | 0.07 % | | 43 | C C D C C C / C C | SP5LJP/MM | 1 | 0.04 % | | 1 | 0.02 % | | 44 | C C D / C D D C C | SV9/S55OO | 1 | 0.04 % | | 1 | 0.02 % | | 45 | C C D D C C C C C | SX12ASTRO | 1 | 0.04 % | | 1 | 0.02 % | | 46 | C D C C / D | W1AW/4 | 1 | 0.04 % | | 2 | 0.05 % | | 47 | C D C C C / C C D | W6PNG/VY2 | 1 | 0.04 % | | 1 | 0.02 % | | 48 | C C D D D C | YR100R | 1 | 0.04 % | | 1 | 0.02 % | | 49 | C C D C C / C C C | YU1LM/QRP | 1 | 0.04 % | | 2 | 0.05 % | |
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