| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BA7LOK | 1149 | 34.20 % | | 1454 | 28.45 % | | 2 | C C D C C | AA1ON | 833 | 24.79 % | | 1212 | 23.71 % | | 3 | C C D C | AA3B | 620 | 18.45 % | | 1213 | 23.73 % | | 4 | C D C C C | D2ACE | 340 | 10.12 % | | 447 | 8.75 % | | 5 | C D C C | E7AA | 180 | 5.36 % | | 300 | 5.87 % | | 6 | C D D C | A25R | 42 | 1.25 % | | 96 | 1.88 % | | 7 | C D C | B0A | 40 | 1.19 % | | 83 | 1.62 % | | 8 | C D D C C | A61BR | 36 | 1.07 % | | 56 | 1.10 % | | 9 | D C D C | 2E3P | 35 | 1.04 % | | 72 | 1.41 % | | 10 | D C D C C | 3B8GL | 34 | 1.01 % | | 52 | 1.02 % | | 11 | D C D C C C | 2E0BLN | 27 | 0.80 % | | 32 | 0.63 % | | 12 | C D D C C C | E24SMC | 3 | 0.09 % | | 4 | 0.08 % | | 13 | C C D / C C D C | EA5/RV2A | 2 | 0.06 % | | 2 | 0.04 % | | 14 | C C D D D C C | DL100TC | 2 | 0.06 % | | 3 | 0.06 % | | 15 | C C D D C | OG16M | 2 | 0.06 % | | 5 | 0.10 % | | 16 | C C D C C C / C | EA4EIY/P | 2 | 0.06 % | | 2 | 0.04 % | | 17 | C C D D C C C | OE40XTU | 2 | 0.06 % | | 2 | 0.04 % | | 18 | C C D / C C D C C C | CT7/HB9AAP | 1 | 0.03 % | | 1 | 0.02 % | | 19 | C C / C C D C C | ER/UT1ZZ | 1 | 0.03 % | | 2 | 0.04 % | | 20 | C C D / C C D C C | HP1/EA5XV | 1 | 0.03 % | | 1 | 0.02 % | | 21 | C C D C C C / D | IZ5TJD/7 | 1 | 0.03 % | | 1 | 0.02 % | | 22 | C D C C C / C | F4ANS/P | 1 | 0.03 % | | 1 | 0.02 % | | 23 | D C D D C | 9A30B | 1 | 0.03 % | | 1 | 0.02 % | | 24 | C C D C C / C | OH7CW/M | 1 | 0.03 % | | 1 | 0.02 % | | 25 | C C D C / C C | RD1A/MM | 1 | 0.03 % | | 1 | 0.02 % | | 26 | C C D C / C | RV3X/P | 1 | 0.03 % | | 1 | 0.02 % | | 27 | C D / C D C C C | S5/M0MPM | 1 | 0.03 % | | 2 | 0.04 % | | 28 | C C D D C C C C | YT26IARU | 1 | 0.03 % | | 1 | 0.02 % | |
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