| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA0YY | 470 | 34.13 % | | 669 | 36.68 % | | 2 | C C D C C C | BG7BDB | 462 | 33.55 % | | 594 | 32.57 % | | 3 | C D C C C | F1SUP | 186 | 13.51 % | | 224 | 12.28 % | | 4 | C D C C | F2LG | 110 | 7.99 % | | 133 | 7.29 % | | 5 | C C D C | AA3B | 74 | 5.37 % | | 105 | 5.76 % | | 6 | D C D C C | 4X4DU | 11 | 0.80 % | | 18 | 0.99 % | | 7 | C D D C C | A41ZZ | 9 | 0.65 % | | 12 | 0.66 % | | 8 | C D C C C / C | F4FNJ/P | 8 | 0.58 % | | 8 | 0.44 % | | 9 | C C D C C C / C | DL2LRT/P | 5 | 0.36 % | | 5 | 0.27 % | | 10 | C C D C C / C | DF3ZE/P | 5 | 0.36 % | | 5 | 0.27 % | | 11 | D C D C C C | 2E0DWU | 4 | 0.29 % | | 7 | 0.38 % | | 12 | C C D / C C D C C C / C ' | ID9/HB9IAS/P | 3 | 0.22 % | | 3 | 0.16 % | | 13 | C C D C C / D | LZ2AF/2 | 3 | 0.22 % | | 4 | 0.22 % | | 14 | C D D C | A44A | 3 | 0.22 % | | 3 | 0.16 % | | 15 | C C D C C C / D | IU5GVH/6 | 3 | 0.22 % | | 3 | 0.16 % | | 16 | C C D / C C D C C C | CT9/DL6MHW | 2 | 0.15 % | | 2 | 0.11 % | | 17 | C C D C / D | RK3Q/6 | 2 | 0.15 % | | 2 | 0.11 % | | 18 | C C D D D C C C | LZ920MLC | 2 | 0.15 % | | 7 | 0.38 % | | 19 | C C / C C D C C | HA/DJ0QJ | 2 | 0.15 % | | 2 | 0.11 % | | 20 | C C D D C C | HF60NH | 2 | 0.15 % | | 3 | 0.16 % | | 21 | C D C C C / C C C | G6HUI/QRP | 1 | 0.07 % | | 1 | 0.05 % | | 22 | C C D / C C D C | CT7/NK6A | 1 | 0.07 % | | 1 | 0.05 % | | 23 | C C / C C D C C C | MM/LA4WIA | 1 | 0.07 % | | 2 | 0.11 % | | 24 | C D C | N3U | 1 | 0.07 % | | 1 | 0.05 % | | 25 | C C D D D C C | OM777CS | 1 | 0.07 % | | 1 | 0.05 % | | 26 | C D C C / D | R2AP/6 | 1 | 0.07 % | | 1 | 0.05 % | | 27 | C / C C D C C C | F/HB9AXG | 1 | 0.07 % | | 1 | 0.05 % | | 28 | C C D C C C / C C C | SM6JWR/QRP | 1 | 0.07 % | | 1 | 0.05 % | | 29 | C C D C C / C C | UR5FA/MM | 1 | 0.07 % | | 1 | 0.05 % | | 30 | C D C C / C C C | W2WC/QRP | 1 | 0.07 % | | 1 | 0.05 % | | 31 | C C D D D C | YR100R | 1 | 0.07 % | | 4 | 0.22 % | |
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