| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA1ON | 916 | 34.95 % | | 1560 | 35.80 % | | 2 | C C D C C C | CS7AMH | 658 | 25.10 % | | 932 | 21.39 % | | 3 | C C D C | AA1V | 353 | 13.47 % | | 662 | 15.19 % | | 4 | C D C C | D1HQ | 293 | 11.18 % | | 449 | 10.31 % | | 5 | C D C C C | F1BOW | 160 | 6.10 % | | 236 | 5.42 % | | 6 | C D D C | E72U | 84 | 3.20 % | | 252 | 5.78 % | | 7 | C D D C C | A65DC | 26 | 0.99 % | | 50 | 1.15 % | | 8 | D C D C C | 3V8CB | 25 | 0.95 % | | 40 | 0.92 % | | 9 | C D C | G3P | 13 | 0.50 % | | 30 | 0.69 % | | 10 | D C D C | 3Z0X | 12 | 0.46 % | | 24 | 0.55 % | | 11 | C C D C C / C | DF3YG/P | 9 | 0.34 % | | 10 | 0.23 % | | 12 | D C D C C C | 2E0HPI | 9 | 0.34 % | | 11 | 0.25 % | | 13 | C C / C C D C C | DL/EA7KW | 8 | 0.31 % | | 11 | 0.25 % | | 14 | C C D C C C / C | DL2KUH/P | 5 | 0.19 % | | 7 | 0.16 % | | 15 | C C / C D C C | DL/K9NW | 4 | 0.15 % | | 8 | 0.18 % | | 16 | C C / C C D C C C | DL/HB9DQL | 4 | 0.15 % | | 6 | 0.14 % | | 17 | C C / C C D C | DL/OL0A | 3 | 0.11 % | | 6 | 0.14 % | | 18 | C D C C C / C | F6BQG/P | 3 | 0.11 % | | 5 | 0.11 % | | 19 | C C D D D C C C | OE100RAD | 3 | 0.11 % | | 5 | 0.11 % | | 20 | C C / C D C C C | DL/I4UFH | 3 | 0.11 % | | 4 | 0.09 % | | 21 | C C D D C C C | OH73ELK | 2 | 0.08 % | | 3 | 0.07 % | | 22 | C C D C C C / C C | DG7LAN/MM | 2 | 0.08 % | | 2 | 0.05 % | | 23 | C C D D D C C | DL100BY | 2 | 0.08 % | | 2 | 0.05 % | | 24 | C C D C C / D | NU1AW/9 | 2 | 0.08 % | | 3 | 0.07 % | | 25 | C D D C C C | S56WYB | 2 | 0.08 % | | 4 | 0.09 % | | 26 | C C D D C | OG55W | 2 | 0.08 % | | 11 | 0.25 % | | 27 | C C D C C / C C C | OK1WM/QRP | 2 | 0.08 % | | 2 | 0.05 % | | 28 | C D C C / D | W1AW/4 | 2 | 0.08 % | | 2 | 0.05 % | | 29 | D C / C C D C | 4L/RC5A | 1 | 0.04 % | | 2 | 0.05 % | | 30 | C C D D C C C C | LM90NRRL | 1 | 0.04 % | | 2 | 0.05 % | | 31 | C C D D C C | LM90HQ | 1 | 0.04 % | | 1 | 0.02 % | | 32 | D C / C D D C C | 9A/S57KM | 1 | 0.04 % | | 4 | 0.09 % | | 33 | D C D C C / C C C | 9A4OP/QRP | 1 | 0.04 % | | 1 | 0.02 % | | 34 | C / C C D C C | F/PD1RP | 1 | 0.04 % | | 1 | 0.02 % | | 35 | D C / C C D C C C | 9A/DL5ROB | 1 | 0.04 % | | 1 | 0.02 % | | 36 | D C / C D D C | 9A/S55G | 1 | 0.04 % | | 1 | 0.02 % | | 37 | C D D C C / C C | S51TA/MM | 1 | 0.04 % | | 1 | 0.02 % | | 38 | C C D / C C D C C C | HB0/DK3RED | 1 | 0.04 % | | 1 | 0.02 % | | 39 | C C D C / D | SB5N/7 | 1 | 0.04 % | | 2 | 0.05 % | | 40 | C C D / C D D C C | SV9/S55OO | 1 | 0.04 % | | 1 | 0.02 % | | 41 | C C D C C / C C | RA0LQ/MM | 1 | 0.04 % | | 1 | 0.02 % | | 42 | C C D D D C | YR100R | 1 | 0.04 % | | 1 | 0.02 % | |
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