| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | AA4MMF | 2434 | 29.87 % | | 3281 | 24.26 % | | 2 | C D C C C | F1AGR | 1696 | 20.81 % | | 2640 | 19.52 % | | 3 | C C D C C | AA0AI | 1649 | 20.24 % | | 2628 | 19.43 % | | 4 | C C D C | AA0O | 1098 | 13.47 % | | 2300 | 17.01 % | | 5 | C D C C | D1DX | 974 | 11.95 % | | 2164 | 16.00 % | | 6 | C D D C | A44A | 50 | 0.61 % | | 105 | 0.78 % | | 7 | D C D C | 3G1D | 45 | 0.55 % | | 83 | 0.61 % | | 8 | D C D C C | 3A2MG | 38 | 0.47 % | | 65 | 0.48 % | | 9 | C D D C C | A45XR | 38 | 0.47 % | | 55 | 0.41 % | | 10 | C D C | C4W | 33 | 0.40 % | | 75 | 0.55 % | | 11 | D C D C C C | 2E0ANU | 21 | 0.26 % | | 26 | 0.19 % | | 12 | C D C C C / C | F4KKX/P | 7 | 0.09 % | | 7 | 0.05 % | | 13 | C C D C C C / C | IV3DLW/P | 6 | 0.07 % | | 6 | 0.04 % | | 14 | C C D D C C C | DR50DIG | 5 | 0.06 % | | 6 | 0.04 % | | 15 | C C D / C C D C | EA5/LN2G | 5 | 0.06 % | | 9 | 0.07 % | | 16 | C C D C C C / D | IK1ZOF/3 | 5 | 0.06 % | | 5 | 0.04 % | | 17 | C D D C C C | E71EEE | 4 | 0.05 % | | 7 | 0.05 % | | 18 | C C D C C / C | DG6CA/P | 3 | 0.04 % | | 6 | 0.04 % | | 19 | C C D / C C D C C C | CT7/HB9AAP | 3 | 0.04 % | | 4 | 0.03 % | | 20 | C C D D C | LG80T | 3 | 0.04 % | | 6 | 0.04 % | | 21 | C C D D C C | OZ30EU | 2 | 0.02 % | | 4 | 0.03 % | | 22 | C C D C C / C D | AH6FX/W4 | 2 | 0.02 % | | 4 | 0.03 % | | 23 | D C D D C C C | 3Z30DVP | 2 | 0.02 % | | 2 | 0.01 % | | 24 | C C D D D C C | GB100GP | 2 | 0.02 % | | 2 | 0.01 % | | 25 | C C D / C C D C C | IG9/LZ2SX | 2 | 0.02 % | | 2 | 0.01 % | | 26 | D C D D C C C C C | 9A01GPPVC | 1 | 0.01 % | | 1 | 0.01 % | | 27 | C C D D D D | DL7202 | 1 | 0.01 % | | 1 | 0.01 % | | 28 | C C D D D C C C | EI100YXQ | 1 | 0.01 % | | 1 | 0.01 % | | 29 | D D D D C C | 7099UZ | 1 | 0.01 % | | 1 | 0.01 % | | 30 | C D / C C D C C C | I0/PB0SJX | 1 | 0.01 % | | 1 | 0.01 % | | 31 | C C D / C D C C | HR9/N3AD | 1 | 0.01 % | | 6 | 0.04 % | | 32 | C C C D D D C C | GBP100GP | 1 | 0.01 % | | 1 | 0.01 % | | 33 | C C D C C / D | HI8PL/7 | 1 | 0.01 % | | 1 | 0.01 % | | 34 | C D C / D D | K3K/19 | 1 | 0.01 % | | 1 | 0.01 % | | 35 | C D C C C C | K3OXLL | 1 | 0.01 % | | 1 | 0.01 % | | 36 | C C D C / C D | KH7Y/W6 | 1 | 0.01 % | | 3 | 0.02 % | | 37 | D C D D C C | 3Z15UE | 1 | 0.01 % | | 1 | 0.01 % | | 38 | C C / C D C C | EI/W5GN | 1 | 0.01 % | | 1 | 0.01 % | | 39 | C C / C C D C C C | LX/PA3DAT | 1 | 0.01 % | | 2 | 0.01 % | | 40 | C D C C D | N1LB4 | 1 | 0.01 % | | 1 | 0.01 % | | 41 | C C C D C | NXT6T | 1 | 0.01 % | | 1 | 0.01 % | | 42 | C C D | OK6 | 1 | 0.01 % | | 1 | 0.01 % | | 43 | C C / C D C C C | LX/G1TPA | 1 | 0.01 % | | 1 | 0.01 % | | 44 | C C C D C C | VAQ2EW | 1 | 0.01 % | | 1 | 0.01 % | | 45 | C D C C C / C C D | W5MIL/HR9 | 1 | 0.01 % | | 3 | 0.02 % | | 46 | C C D C C C C | YG9EPPK | 1 | 0.01 % | | 1 | 0.01 % | | 47 | C C D C C / C C | YL3IZ/MM | 1 | 0.01 % | | 1 | 0.01 % | |
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