| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA4AK | 908 | 34.49 % | | 1630 | 36.52 % | | 2 | C C D C C C | CM8NMN | 668 | 25.37 % | | 992 | 22.23 % | | 3 | C C D C | AA1K | 345 | 13.10 % | | 652 | 14.61 % | | 4 | C D C C | D1HQ | 295 | 11.20 % | | 441 | 9.88 % | | 5 | C D C C C | F1AGR | 166 | 6.30 % | | 247 | 5.53 % | | 6 | C D D C | E73A | 89 | 3.38 % | | 235 | 5.27 % | | 7 | C D D C C | A47RS | 30 | 1.14 % | | 49 | 1.10 % | | 8 | D C D C C | 4M5EN | 26 | 0.99 % | | 47 | 1.05 % | | 9 | C D C | G3P | 16 | 0.61 % | | 34 | 0.76 % | | 10 | D C D C | 3Z0X | 14 | 0.53 % | | 24 | 0.54 % | | 11 | D C D C C C | 2E0AOZ | 7 | 0.27 % | | 7 | 0.16 % | | 12 | C C D C C C / C | DL1DWW/P | 6 | 0.23 % | | 7 | 0.16 % | | 13 | C C / C C D C C | DL/EA7KW | 5 | 0.19 % | | 8 | 0.18 % | | 14 | C C D C C / C | DB8TA/P | 4 | 0.15 % | | 5 | 0.11 % | | 15 | C C / C D C C | DL/K9NW | 4 | 0.15 % | | 7 | 0.16 % | | 16 | C D C C C / C | F4GKR/P | 4 | 0.15 % | | 9 | 0.20 % | | 17 | C C D D D C C C | OE100RAD | 4 | 0.15 % | | 5 | 0.11 % | | 18 | C C / C C D C C C | DL/HB9DQL | 4 | 0.15 % | | 8 | 0.18 % | | 19 | C C / C C D C | DL/HG0R | 3 | 0.11 % | | 4 | 0.09 % | | 20 | C C D / C C D C C | EA6/DK5ON | 3 | 0.11 % | | 3 | 0.07 % | | 21 | C C / C D C C C | DL/I4VEQ | 3 | 0.11 % | | 4 | 0.09 % | | 22 | C C D C / D | RG5A/6 | 3 | 0.11 % | | 4 | 0.09 % | | 23 | C C D C C C / C C | DG7LAN/MM | 2 | 0.08 % | | 2 | 0.04 % | | 24 | C C D C C / C C | RA0LQ/MM | 2 | 0.08 % | | 2 | 0.04 % | | 25 | C C D C C / D | NU1AW/9 | 2 | 0.08 % | | 4 | 0.09 % | | 26 | C C D D C | OG55W | 2 | 0.08 % | | 8 | 0.18 % | | 27 | C D D C C C | S56WYB | 2 | 0.08 % | | 3 | 0.07 % | | 28 | C C D D D C C | DL100BY | 2 | 0.08 % | | 3 | 0.07 % | | 29 | C C D C C C C | DA0WRTC | 1 | 0.04 % | | 1 | 0.02 % | | 30 | C D / C C D C C | I0/YO3XX | 1 | 0.04 % | | 1 | 0.02 % | | 31 | D C / C C D C | 4L/RC5A | 1 | 0.04 % | | 2 | 0.04 % | | 32 | D C / C C D C C C | 9A/DL5ROB | 1 | 0.04 % | | 1 | 0.02 % | | 33 | C C D C / C | OL5E/P | 1 | 0.04 % | | 1 | 0.02 % | | 34 | C C D D C C C | OV18FWC | 1 | 0.04 % | | 1 | 0.02 % | | 35 | C C D C / C C D C C | PY0F/PY7RP | 1 | 0.04 % | | 1 | 0.02 % | | 36 | D C / C D D C C | 9A/S57KM | 1 | 0.04 % | | 3 | 0.07 % | | 37 | D C D C C / C | 9A6DR/P | 1 | 0.04 % | | 1 | 0.02 % | | 38 | C D D C C / C C | S51TA/MM | 1 | 0.04 % | | 1 | 0.02 % | | 39 | C C D D C C C C | LM90NRRL | 1 | 0.04 % | | 3 | 0.07 % | | 40 | C D C C / D | W1AW/4 | 1 | 0.04 % | | 1 | 0.02 % | | 41 | C D C C C / C C D | W6PNG/VY2 | 1 | 0.04 % | | 1 | 0.02 % | | 42 | C C D D D C | YR100R | 1 | 0.04 % | | 1 | 0.02 % | |
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