| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BD8AES | 1598 | 45.66 % | | 2556 | 46.21 % | | 2 | C C D C C | AB2EW | 1035 | 29.57 % | | 1656 | 29.94 % | | 3 | C D C C C | F1DFF | 400 | 11.43 % | | 589 | 10.65 % | | 4 | C C D C | AG9U | 161 | 4.60 % | | 244 | 4.41 % | | 5 | C D C C | F2VX | 120 | 3.43 % | | 171 | 3.09 % | | 6 | D C D C C | 3A2MW | 43 | 1.23 % | | 87 | 1.57 % | | 7 | D C D C C C | 2E0BJL | 26 | 0.74 % | | 42 | 0.76 % | | 8 | C D D C C | A92EE | 23 | 0.66 % | | 35 | 0.63 % | | 9 | C D D C | E72U | 20 | 0.57 % | | 31 | 0.56 % | | 10 | D C D C | 3Z6O | 10 | 0.29 % | | 43 | 0.78 % | | 11 | C C D C C C / C C C | DL1UNK/QRP | 7 | 0.20 % | | 7 | 0.13 % | | 12 | C C D D D C C | DB100FK | 5 | 0.14 % | | 6 | 0.11 % | | 13 | C D D C C C | A43WWA | 5 | 0.14 % | | 5 | 0.09 % | | 14 | C C / C C D C C | DL/HA8PG | 4 | 0.11 % | | 4 | 0.07 % | | 15 | C D C | M1X | 4 | 0.11 % | | 4 | 0.07 % | | 16 | C C D / C C D C C C | EA6/DK1XAM | 4 | 0.11 % | | 7 | 0.13 % | | 17 | C C D C C C / C | EA4CWB/M | 3 | 0.09 % | | 3 | 0.05 % | | 18 | C C D C C / D | IQ5QO/0 | 3 | 0.09 % | | 5 | 0.09 % | | 19 | C D C C C / C C C | G4KRJ/QRP | 2 | 0.06 % | | 3 | 0.05 % | | 20 | C C D C C C C | OH6OKSA | 2 | 0.06 % | | 2 | 0.04 % | | 21 | C C D / C D D C C | IG9/S52OT | 2 | 0.06 % | | 2 | 0.04 % | | 22 | C D C C / C | R6FS/M | 2 | 0.06 % | | 2 | 0.04 % | | 23 | C C D C C C / D | RA6ACF/3 | 2 | 0.06 % | | 2 | 0.04 % | | 24 | D C D C C C / C | 2E0MMY/M | 2 | 0.06 % | | 2 | 0.04 % | | 25 | C C D C C C C C C | EU7SHVLAD | 1 | 0.03 % | | 1 | 0.02 % | | 26 | C C D D D C C C C | DK100DDSR | 1 | 0.03 % | | 1 | 0.02 % | | 27 | D C / C C D C C C | 9A/YU2NPC | 1 | 0.03 % | | 1 | 0.02 % | | 28 | C C C C C | DJOLE | 1 | 0.03 % | | 1 | 0.02 % | | 29 | C / C C D C C C | G/YO9GPF | 1 | 0.03 % | | 1 | 0.02 % | | 30 | C C D C C / C | OK1CZ/P | 1 | 0.03 % | | 1 | 0.02 % | | 31 | C C D C C / C C C | OK5DK/QRP | 1 | 0.03 % | | 1 | 0.02 % | | 32 | C C D D D C C C | OR100LGE | 1 | 0.03 % | | 1 | 0.02 % | | 33 | C D C C C / C | F8BJK/P | 1 | 0.03 % | | 1 | 0.02 % | | 34 | C C / / C C D C C | PA//ON5AF | 1 | 0.03 % | | 1 | 0.02 % | | 35 | C C D D C C C | PH24HNY | 1 | 0.03 % | | 1 | 0.02 % | | 36 | D C D D D C C C | 9A100RKZ | 1 | 0.03 % | | 3 | 0.05 % | | 37 | C D C C / C C C | R6FS/QRP | 1 | 0.03 % | | 1 | 0.02 % | | 38 | C C D D C | OZ11A | 1 | 0.03 % | | 4 | 0.07 % | | 39 | C D D C C / C C C | S52ID/QRP | 1 | 0.03 % | | 1 | 0.02 % | | 40 | C D D D | S574 | 1 | 0.03 % | | 2 | 0.04 % | | 41 | C C D / C C D C C | YO8/LZ4UU | 1 | 0.03 % | | 1 | 0.02 % | |
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