| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA1ON | 782 | 35.23 % | | 1412 | 36.23 % | | 2 | C C D C C C | CS7AMH | 536 | 24.14 % | | 798 | 20.48 % | | 3 | C C D C | AA1K | 312 | 14.05 % | | 622 | 15.96 % | | 4 | C D C C | D1HQ | 236 | 10.63 % | | 364 | 9.34 % | | 5 | C D C C C | F1BOW | 130 | 5.86 % | | 196 | 5.03 % | | 6 | C D D C | E72U | 85 | 3.83 % | | 264 | 6.77 % | | 7 | C D D C C | A47RS | 28 | 1.26 % | | 47 | 1.21 % | | 8 | D C D C C | 3V8CB | 26 | 1.17 % | | 47 | 1.21 % | | 9 | C D C | C4W | 16 | 0.72 % | | 39 | 1.00 % | | 10 | D C D C | 3Z0X | 13 | 0.59 % | | 23 | 0.59 % | | 11 | C C D C C / C | DJ4MM/P | 5 | 0.23 % | | 5 | 0.13 % | | 12 | C C / C D C C | DL/K5NA | 4 | 0.18 % | | 8 | 0.21 % | | 13 | C C / C C D C | DL/HG0R | 4 | 0.18 % | | 6 | 0.15 % | | 14 | C C / C C D C C | DL/EA7KW | 4 | 0.18 % | | 8 | 0.21 % | | 15 | C C D C C / D | NU1AW/9 | 3 | 0.14 % | | 5 | 0.13 % | | 16 | C C D D D C C C | OE100SPW | 3 | 0.14 % | | 3 | 0.08 % | | 17 | C C / C C D C C C | DL/HB9DQL | 3 | 0.14 % | | 6 | 0.15 % | | 18 | C D C C / D | W1AW/4 | 2 | 0.09 % | | 4 | 0.10 % | | 19 | C C D C C C / C | DL2KUH/P | 2 | 0.09 % | | 3 | 0.08 % | | 20 | C C D C C C / C C | DG7LAN/MM | 2 | 0.09 % | | 2 | 0.05 % | | 21 | C C D / C C D C C | EA6/DK5ON | 2 | 0.09 % | | 2 | 0.05 % | | 22 | C C D C / D | RT9T/3 | 2 | 0.09 % | | 2 | 0.05 % | | 23 | C D C C C / C | F4GKR/P | 2 | 0.09 % | | 5 | 0.13 % | | 24 | D C / C D D C C | 9A/S57KM | 1 | 0.05 % | | 3 | 0.08 % | | 25 | D C / C C D C C C | 9A/DL5ROB | 1 | 0.05 % | | 1 | 0.03 % | | 26 | C C D C C C / C C C | EA7AAW/QRP | 1 | 0.05 % | | 1 | 0.03 % | | 27 | C / C C D C C | F/DF5RF | 1 | 0.05 % | | 1 | 0.03 % | | 28 | C C D / C C D C C C / C' | HB0/DK3RED/P | 1 | 0.05 % | | 1 | 0.03 % | | 29 | C C D C C C / C C D | IK2AIT/IV3 | 1 | 0.05 % | | 1 | 0.03 % | | 30 | C C D D C C C | AO18FWC | 1 | 0.05 % | | 1 | 0.03 % | | 31 | C C D D C C | LM90HQ | 1 | 0.05 % | | 1 | 0.03 % | | 32 | C C D D C C C C | LM90NRRL | 1 | 0.05 % | | 1 | 0.03 % | | 33 | D C / C C D C | 4L/RC5A | 1 | 0.05 % | | 1 | 0.03 % | | 34 | C C D C C C C | DA0WRTC | 1 | 0.05 % | | 1 | 0.03 % | | 35 | C C D D C | OG55W | 1 | 0.05 % | | 5 | 0.13 % | | 36 | D C D C C C | 9A5KIR | 1 | 0.05 % | | 1 | 0.03 % | | 37 | C D D C C / C C | S51TA/MM | 1 | 0.05 % | | 2 | 0.05 % | | 38 | C D D C C C | S57NML | 1 | 0.05 % | | 1 | 0.03 % | | 39 | C C / C D C C C | SP/I4ZSQ | 1 | 0.05 % | | 1 | 0.03 % | | 40 | C D C C C / D | K9QVB/9 | 1 | 0.05 % | | 1 | 0.03 % | | 41 | C C D C C / C C | YL3IZ/MM | 1 | 0.05 % | | 2 | 0.05 % | |
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