| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | CM3EFM | 818 | 39.57 % | | 1123 | 41.69 % | | 2 | C C D C C | AA6RE | 630 | 30.48 % | | 806 | 29.92 % | | 3 | C D C C C | F1ICS | 258 | 12.48 % | | 308 | 11.43 % | | 4 | C D C C | F2LG | 131 | 6.34 % | | 153 | 5.68 % | | 5 | C C D C | AC4G | 109 | 5.27 % | | 135 | 5.01 % | | 6 | D C D C C | 4L6QL | 22 | 1.06 % | | 30 | 1.11 % | | 7 | C D D C C | A65BX | 19 | 0.92 % | | 30 | 1.11 % | | 8 | C D D C | E72U | 13 | 0.63 % | | 17 | 0.63 % | | 9 | D C D C C C | 2E0CVN | 11 | 0.53 % | | 14 | 0.52 % | | 10 | C C D C C C / C C C | DL4DQA/QRP | 8 | 0.39 % | | 21 | 0.78 % | | 11 | C C D C C C / C | IK3RIY/P | 6 | 0.29 % | | 6 | 0.22 % | | 12 | D C D C | 3Z9K | 3 | 0.15 % | | 3 | 0.11 % | | 13 | C C D C C / C | DL1WH/P | 3 | 0.15 % | | 3 | 0.11 % | | 14 | C D / C C D C C C | I6/YO9HHK | 2 | 0.10 % | | 2 | 0.07 % | | 15 | C C D C C / C C C | DL2QB/QRP | 2 | 0.10 % | | 2 | 0.07 % | | 16 | C C D D C C C | DM90AIW | 2 | 0.10 % | | 2 | 0.07 % | | 17 | C C D C C C / C C | GM8OFQ/MM | 2 | 0.10 % | | 2 | 0.07 % | | 18 | C C D / C C D C C | EA8/DK1AX | 2 | 0.10 % | | 3 | 0.11 % | | 19 | C D C C C / C | F4FUB/M | 2 | 0.10 % | | 2 | 0.07 % | | 20 | C C D / C C D C C C | EA6/DK1XAM | 1 | 0.05 % | | 1 | 0.04 % | | 21 | C C D / C D C C C | CT7/F6HBR | 1 | 0.05 % | | 2 | 0.07 % | | 22 | C D D C C C | E73ESP | 1 | 0.05 % | | 1 | 0.04 % | | 23 | D C D D C C C | 3Z18HNY | 1 | 0.05 % | | 1 | 0.04 % | | 24 | C D C C C / C C C | F6CYD/QRP | 1 | 0.05 % | | 1 | 0.04 % | | 25 | C C D D C C C C | DL60TELF | 1 | 0.05 % | | 1 | 0.04 % | | 26 | D C / C D C C | 4X/K2LS | 1 | 0.05 % | | 1 | 0.04 % | | 27 | D C D D C C | 9A61AA | 1 | 0.05 % | | 1 | 0.04 % | | 28 | C C D C C C / D | IK5BOH/2 | 1 | 0.05 % | | 1 | 0.04 % | | 29 | C C D C C / D | LZ1HW/2 | 1 | 0.05 % | | 2 | 0.07 % | | 30 | C D C C / D | N9EN/4 | 1 | 0.05 % | | 1 | 0.04 % | | 31 | C C D D C C | OZ30EU | 1 | 0.05 % | | 1 | 0.04 % | | 32 | C D / C D D C | P4/S50M | 1 | 0.05 % | | 1 | 0.04 % | | 33 | C C / C C D C C C | PA/DG8KAJ | 1 | 0.05 % | | 1 | 0.04 % | | 34 | C C D D D D C C C | PF2018LWD | 1 | 0.05 % | | 2 | 0.07 % | | 35 | C D D D C C C | S510PMC | 1 | 0.05 % | | 1 | 0.04 % | | 36 | C C D D D C C C | SN100ZHP | 1 | 0.05 % | | 1 | 0.04 % | | 37 | C C D C C C C | SN1WOSP | 1 | 0.05 % | | 1 | 0.04 % | | 38 | C C / C C D C C | SP/DJ7RI | 1 | 0.05 % | | 1 | 0.04 % | | 39 | C C / C D C C C | SP/I4ZSQ | 1 | 0.05 % | | 1 | 0.04 % | | 40 | C C D C C C / C C / C C ' | SP5WWY/MM/SP5 | 1 | 0.05 % | | 1 | 0.04 % | | 41 | C C D C C / C C | UA6GO/MM | 1 | 0.05 % | | 1 | 0.04 % | | 42 | C C D D D C | YR100R | 1 | 0.05 % | | 6 | 0.22 % | | 43 | C C D D C | YR24R | 1 | 0.05 % | | 1 | 0.04 % | |
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