| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BD4TUC | 1270 | 32.48 % | | 2295 | 27.94 % | | 2 | C C D C C | AA1SU | 1234 | 31.56 % | | 2807 | 34.17 % | | 3 | C C D C | AA0O | 558 | 14.27 % | | 1568 | 19.09 % | | 4 | C D C C | B3HQ | 330 | 8.44 % | | 584 | 7.11 % | | 5 | C D C C C | F1GRH | 254 | 6.50 % | | 393 | 4.78 % | | 6 | C D D C C | A41JZ | 52 | 1.33 % | | 120 | 1.46 % | | 7 | D C D C C | 3V8SS | 46 | 1.18 % | | 116 | 1.41 % | | 8 | C D D C | A42K | 23 | 0.59 % | | 67 | 0.82 % | | 9 | D C D C C C | 2E0AOO | 22 | 0.56 % | | 28 | 0.34 % | | 10 | D C D C | 3Z0R | 19 | 0.49 % | | 52 | 0.63 % | | 11 | C D C | C4W | 19 | 0.49 % | | 61 | 0.74 % | | 12 | C C D C C C / C | DB1BHR/P | 15 | 0.38 % | | 25 | 0.30 % | | 13 | C D D C C C | E21YDP | 11 | 0.28 % | | 16 | 0.19 % | | 14 | C C D D C C C | DL35SAR | 6 | 0.15 % | | 10 | 0.12 % | | 15 | C C D C C / C | DJ6LW/M | 6 | 0.15 % | | 6 | 0.07 % | | 16 | C C / C C D C C | OZ/DL3DW | 4 | 0.10 % | | 7 | 0.09 % | | 17 | C C D C C C C | DM3ORSV | 4 | 0.10 % | | 6 | 0.07 % | | 18 | C D C C C / C | F4FLH/P | 3 | 0.08 % | | 3 | 0.04 % | | 19 | C C D D C C | LZ77VP | 3 | 0.08 % | | 4 | 0.05 % | | 20 | C C D / C C D C C C | CT7/HB9AAP | 2 | 0.05 % | | 2 | 0.02 % | | 21 | C C D C C D | OD5OJ1 | 2 | 0.05 % | | 2 | 0.02 % | | 22 | C C D C C / C C C | DF7MB/QRP | 2 | 0.05 % | | 6 | 0.07 % | | 23 | C C D C C C / C C C | IK7LNC/QRP | 2 | 0.05 % | | 2 | 0.02 % | | 24 | C C D C C C / D | ES1NOA/2 | 2 | 0.05 % | | 2 | 0.02 % | | 25 | C C D D D C C C | DL100BKW | 2 | 0.05 % | | 2 | 0.02 % | | 26 | D C D D D C | 9A164T | 1 | 0.03 % | | 3 | 0.04 % | | 27 | C C D C C / C / C C C | HA3OU/P/QRP | 1 | 0.03 % | | 1 | 0.01 % | | 28 | D C / C D D C C | 9A/S50PB | 1 | 0.03 % | | 1 | 0.01 % | | 29 | C D C C C / D | I1WKN/4 | 1 | 0.03 % | | 1 | 0.01 % | | 30 | D C / C C D C C | 9A/DO5UZ | 1 | 0.03 % | | 1 | 0.01 % | | 31 | C C D / C D C C | KP4/K7GM | 1 | 0.03 % | | 1 | 0.01 % | | 32 | C D / C D D C | E7/Z35M | 1 | 0.03 % | | 2 | 0.02 % | | 33 | C C D / C C D C C | EA8/EA4BQ | 1 | 0.03 % | | 1 | 0.01 % | | 34 | C C D D C | OG55W | 1 | 0.03 % | | 4 | 0.05 % | | 35 | C C D C C C C D C C | OK1YMLZ1PJ | 1 | 0.03 % | | 1 | 0.01 % | | 36 | C C D D D C C | OL192FP | 1 | 0.03 % | | 1 | 0.01 % | | 37 | C C D C / C | OP4A/P | 1 | 0.03 % | | 2 | 0.02 % | | 38 | C D C C C / D / C C | I0SJX/0/MM | 1 | 0.03 % | | 1 | 0.01 % | | 39 | C C D D C C C C C C C C | PC19STAYSAFE | 1 | 0.03 % | | 1 | 0.01 % | | 40 | C D / C D C C C | S5/M0MPM | 1 | 0.03 % | | 3 | 0.04 % | | 41 | C C D C / C C | SP1R/MM | 1 | 0.03 % | | 1 | 0.01 % | | 42 | C D C C / D | W1AW/4 | 1 | 0.03 % | | 3 | 0.04 % | | 43 | C C D D | WO40 | 1 | 0.03 % | | 1 | 0.01 % | | 44 | C C D C / D | ZR2A/4 | 1 | 0.03 % | | 1 | 0.01 % | |
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