| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA1MD | 841 | 34.41 % | | 1544 | 35.45 % | | 2 | C C D C C C | CM8NMN | 611 | 25.00 % | | 904 | 20.76 % | | 3 | C C D C | AA1K | 345 | 14.12 % | | 686 | 15.75 % | | 4 | C D C C | D1HQ | 261 | 10.68 % | | 407 | 9.35 % | | 5 | C D C C C | F1IWH | 143 | 5.85 % | | 198 | 4.55 % | | 6 | C D D C | E72U | 97 | 3.97 % | | 344 | 7.90 % | | 7 | C D D C C | A71HQ | 28 | 1.15 % | | 52 | 1.19 % | | 8 | D C D C C | 3V8CB | 26 | 1.06 % | | 52 | 1.19 % | | 9 | C D C | C4W | 16 | 0.65 % | | 43 | 0.99 % | | 10 | D C D C | 3Z0X | 12 | 0.49 % | | 22 | 0.51 % | | 11 | C C D C C / C | DJ4MM/P | 6 | 0.25 % | | 12 | 0.28 % | | 12 | C C / C D C C | DL/K5NA | 6 | 0.25 % | | 10 | 0.23 % | | 13 | C C / C C D C C C | DL/HB9DQL | 5 | 0.20 % | | 6 | 0.14 % | | 14 | C C / C C D C C | DL/OZ1AA | 4 | 0.16 % | | 8 | 0.18 % | | 15 | C C / C C D C | DL/HG0R | 4 | 0.16 % | | 10 | 0.23 % | | 16 | C C D C C C / C | DL2KUH/P | 4 | 0.16 % | | 6 | 0.14 % | | 17 | C C / C D C C C | DL/G4IRN | 3 | 0.12 % | | 4 | 0.09 % | | 18 | C D C C C / C | F4GKR/P | 3 | 0.12 % | | 5 | 0.11 % | | 19 | D C D C C C | 2E0CVN | 3 | 0.12 % | | 3 | 0.07 % | | 20 | C C D D D C C C | OE100RAD | 2 | 0.08 % | | 2 | 0.05 % | | 21 | C C D C C C / C C | DG7LAN/MM | 2 | 0.08 % | | 2 | 0.05 % | | 22 | C C D C / C | DL2O/P | 2 | 0.08 % | | 2 | 0.05 % | | 23 | C C D D C | OG55W | 2 | 0.08 % | | 9 | 0.21 % | | 24 | C D C C / D | W1AW/4 | 2 | 0.08 % | | 2 | 0.05 % | | 25 | C C D C C / D | NU1AW/9 | 2 | 0.08 % | | 4 | 0.09 % | | 26 | C C D D D C C | DL100BY | 1 | 0.04 % | | 1 | 0.02 % | | 27 | C / C D C C C | F/G0PZA | 1 | 0.04 % | | 1 | 0.02 % | | 28 | D C / C D D C C | 9A/S57KM | 1 | 0.04 % | | 1 | 0.02 % | | 29 | C / C C D C C | F/DF5RF | 1 | 0.04 % | | 1 | 0.02 % | | 30 | C C D D C C C C | LM90NRRL | 1 | 0.04 % | | 1 | 0.02 % | | 31 | D C / C C D C C C | 9A/DL5ROB | 1 | 0.04 % | | 1 | 0.02 % | | 32 | D C / C C D C | 4L/RC5A | 1 | 0.04 % | | 1 | 0.02 % | | 33 | C C D D C C | LM90HQ | 1 | 0.04 % | | 1 | 0.02 % | | 34 | C D D C C / C C | S51TA/MM | 1 | 0.04 % | | 1 | 0.02 % | | 35 | C D D C C C | S57NML | 1 | 0.04 % | | 2 | 0.05 % | | 36 | C C D C / D | SB5N/7 | 1 | 0.04 % | | 2 | 0.05 % | | 37 | C C D C C C / C C C | EA7AAW/QRP | 1 | 0.04 % | | 1 | 0.02 % | | 38 | C D C C C / C C D | W6PNG/VY2 | 1 | 0.04 % | | 1 | 0.02 % | | 39 | C C D C C / C C C | YU1LM/QRP | 1 | 0.04 % | | 3 | 0.07 % | |
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