| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA1BU | 510 | 29.46 % | | 613 | 28.69 % | | 2 | C C D C C C | BY4SHX | 485 | 28.02 % | | 538 | 25.18 % | | 3 | C C D C | AA1K | 336 | 19.41 % | | 498 | 23.30 % | | 4 | C D C C C | F1ICR | 141 | 8.15 % | | 157 | 7.35 % | | 5 | C D C C | F2AR | 120 | 6.93 % | | 143 | 6.69 % | | 6 | C D C | B4S | 21 | 1.21 % | | 33 | 1.54 % | | 7 | C D D C | E70A | 21 | 1.21 % | | 25 | 1.17 % | | 8 | C D D C C | A61ZX | 20 | 1.16 % | | 30 | 1.40 % | | 9 | D C D C | 2Y2A | 20 | 1.16 % | | 29 | 1.36 % | | 10 | D C D C C | 4X1IM | 16 | 0.92 % | | 23 | 1.08 % | | 11 | D C D C C C | 2E0IAF | 7 | 0.40 % | | 7 | 0.33 % | | 12 | C D D C C C | C91GBA | 6 | 0.35 % | | 7 | 0.33 % | | 13 | C C D D C | HA30S | 3 | 0.17 % | | 4 | 0.19 % | | 14 | C C D C C C / D | IK3UNA/1 | 3 | 0.17 % | | 4 | 0.19 % | | 15 | C C D C C C / C | OH1LWZ/M | 3 | 0.17 % | | 4 | 0.19 % | | 16 | C C / C C D C C | OK/LZ3SF | 2 | 0.12 % | | 4 | 0.19 % | | 17 | C C D / C C D C | EA5/LB7Q | 2 | 0.12 % | | 3 | 0.14 % | | 18 | C C / C D C C | EI/W5GN | 2 | 0.12 % | | 2 | 0.09 % | | 19 | C D C C C / C | F8IJV/P | 2 | 0.12 % | | 2 | 0.09 % | | 20 | C C D / C D D C | EA6/S53R | 1 | 0.06 % | | 1 | 0.05 % | | 21 | C C D C C / C C C | DJ9JY/QRP | 1 | 0.06 % | | 1 | 0.05 % | | 22 | C D / C C D C C | B9/BY9GA | 1 | 0.06 % | | 1 | 0.05 % | | 23 | C C D / C C D C C C | HB0/HA7JTR | 1 | 0.06 % | | 1 | 0.05 % | | 24 | C / C D D C C | F/E73CQ | 1 | 0.06 % | | 1 | 0.05 % | | 25 | C C D / C D C C | CT9/R9DX | 1 | 0.06 % | | 1 | 0.05 % | | 26 | C C D C C C / C C C | IZ2JPN/QRP | 1 | 0.06 % | | 1 | 0.05 % | | 27 | C D C C C / C C C | I2BPP/QRP | 1 | 0.06 % | | 1 | 0.05 % | | 28 | C C / C C D C C C | EA/OZ1KAH | 1 | 0.06 % | | 1 | 0.05 % | | 29 | C C / C C D C | SP/WQ7X | 1 | 0.06 % | | 1 | 0.05 % | | 30 | C C D / C D C C C | XE3/K5ENS | 1 | 0.06 % | | 1 | 0.05 % | |
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