| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BA7LOK | 773 | 36.07 % | | 884 | 34.00 % | | 2 | C C D C C | AA4VT | 482 | 22.49 % | | 585 | 22.50 % | | 3 | C C D C | AA3B | 408 | 19.04 % | | 542 | 20.85 % | | 4 | C D C C C | F1AGR | 220 | 10.27 % | | 259 | 9.96 % | | 5 | C D C C | E7AA | 65 | 3.03 % | | 82 | 3.15 % | | 6 | D C D C C | 3B8CW | 27 | 1.26 % | | 29 | 1.12 % | | 7 | C D D C C | A61BR | 26 | 1.21 % | | 29 | 1.12 % | | 8 | D C D C C C | 2E0EBM | 23 | 1.07 % | | 30 | 1.15 % | | 9 | C D C | C4I | 23 | 1.07 % | | 34 | 1.31 % | | 10 | D C D C | 3Z1K | 23 | 1.07 % | | 34 | 1.31 % | | 11 | C D D C | A44A | 20 | 0.93 % | | 28 | 1.08 % | | 12 | C D D C C C | E20PFE | 6 | 0.28 % | | 6 | 0.23 % | | 13 | C C D C C C C | II1WRTC | 5 | 0.23 % | | 7 | 0.27 % | | 14 | C C D D C C C | DF40BGK | 5 | 0.23 % | | 7 | 0.27 % | | 15 | C C D D C C | HB50SH | 4 | 0.19 % | | 4 | 0.15 % | | 16 | C C D D C | OG73X | 3 | 0.14 % | | 3 | 0.12 % | | 17 | C C D C C C / C C C | IW2ODI/QRP | 3 | 0.14 % | | 3 | 0.12 % | | 18 | C C D C C / C | DH9DX/P | 3 | 0.14 % | | 3 | 0.12 % | | 19 | C D C C C / C | F4IIQ/P | 3 | 0.14 % | | 5 | 0.19 % | | 20 | C C D C C C / C | DG5NFP/P | 3 | 0.14 % | | 4 | 0.15 % | | 21 | C C D C C / C C C | EA1CM/QRP | 2 | 0.09 % | | 3 | 0.12 % | | 22 | C C D D D C | EI100C | 2 | 0.09 % | | 3 | 0.12 % | | 23 | C C D / C C D C C C | DL2/SP2RBA | 2 | 0.09 % | | 2 | 0.08 % | | 24 | C C / C D D C C | DL/E79AA | 1 | 0.05 % | | 1 | 0.04 % | | 25 | C C / C C D C C C | EA/HB9THZ | 1 | 0.05 % | | 1 | 0.04 % | | 26 | C C D D C C C C C | DL35EUDXF | 1 | 0.05 % | | 2 | 0.08 % | | 27 | C C D D C C C C | EI90IRTS | 1 | 0.05 % | | 1 | 0.04 % | | 28 | D C D D D D | 3X2021 | 1 | 0.05 % | | 1 | 0.04 % | | 29 | C D / C C D C C C | I3/OE6MBG | 1 | 0.05 % | | 1 | 0.04 % | | 30 | D C / C C D C C | 9H/TA1HZ | 1 | 0.05 % | | 1 | 0.04 % | | 31 | C C D / C C D C C | EA8/OH0XX | 1 | 0.05 % | | 1 | 0.04 % | | 32 | C C D D D C C | DK050BN | 1 | 0.05 % | | 2 | 0.08 % | | 33 | C D D C C / C | S56OA/P | 1 | 0.05 % | | 1 | 0.04 % | | 34 | C C / C C D C C | SP/UT5UT | 1 | 0.05 % | | 1 | 0.04 % | | 35 | C D / C C D C C | W1/PY1MX | 1 | 0.05 % | | 1 | 0.04 % | |
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