|  Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % | 
|---|
 | 1 | C C D C C  | AA1NO | 872 | 35.65 % |  | 1158 | 34.42 % |  |  | 2 | C C D C C C  | CO6LPB | 655 | 26.78 % |  | 821 | 24.41 % |  |  | 3 | C C D C  | AA1K | 295 | 12.06 % |  | 501 | 14.89 % |  |  | 4 | C D C C  | F2YT | 238 | 9.73 % |  | 343 | 10.20 % |  |  | 5 | C D C C C  | C3ACH | 211 | 8.63 % |  | 271 | 8.06 % |  |  | 6 | D C D C C  | 3V8SF | 32 | 1.31 % |  | 51 | 1.52 % |  |  | 7 | C D D C  | A61Q | 29 | 1.19 % |  | 43 | 1.28 % |  |  | 8 | C D D C C  | A45XR | 26 | 1.06 % |  | 35 | 1.04 % |  |  | 9 | D C D C  | 3V5A | 23 | 0.94 % |  | 45 | 1.34 % |  |  | 10 | C D C  | B1Z | 12 | 0.49 % |  | 16 | 0.48 % |  |  | 11 | C C D C C C / D  | IN3OWY/2 | 5 | 0.20 % |  | 7 | 0.21 % |  |  | 12 | D C D C C C  | 2U0OKY | 4 | 0.16 % |  | 5 | 0.15 % |  |  | 13 | C C D / C C D C C  | EA8/DJ1OJ | 3 | 0.12 % |  | 4 | 0.12 % |  |  | 14 | C C D D C C C  | OE50CWL | 3 | 0.12 % |  | 3 | 0.09 % |  |  | 15 | C C D C C / D  | RU9AZ/9 | 3 | 0.12 % |  | 6 | 0.18 % |  |  | 16 | C C D C C / C C C  | RV3FW/QRP | 3 | 0.12 % |  | 4 | 0.12 % |  |  | 17 | C C D / C C D C C C  | HB9/IV3LZQ | 2 | 0.08 % |  | 3 | 0.09 % |  |  | 18 | C C / C C D C C  | LX/DL5SE | 2 | 0.08 % |  | 2 | 0.06 % |  |  | 19 | C C D C C / C C  | SP1NY/MM | 2 | 0.08 % |  | 3 | 0.09 % |  |  | 20 | C C / C C D C C C  | DL/OK1UXH | 2 | 0.08 % |  | 2 | 0.06 % |  |  | 21 | C C D C / C C C  | SN8A/QRP | 2 | 0.08 % |  | 3 | 0.09 % |  |  | 22 | D C C D C C  | 3DA0NW | 1 | 0.04 % |  | 3 | 0.09 % |  |  | 23 | C C / C D C C C  | FY/F5IRO | 1 | 0.04 % |  | 1 | 0.03 % |  |  | 24 | C C D D C C C C  | HA80IARU | 1 | 0.04 % |  | 3 | 0.09 % |  |  | 25 | D C D / C C D C C  | 3B8/OM3PC | 1 | 0.04 % |  | 5 | 0.15 % |  |  | 26 | C D C C C / C C C  | F5MPS/QRP | 1 | 0.04 % |  | 1 | 0.03 % |  |  | 27 | D C D / C D C C C  | 9M6/G3OOK | 1 | 0.04 % |  | 1 | 0.03 % |  |  | 28 | C C D / C D C C  | KP2/K3MD | 1 | 0.04 % |  | 2 | 0.06 % |  |  | 29 | C / C C D C C  | M/SP3CW | 1 | 0.04 % |  | 1 | 0.03 % |  |  | 30 | C C D D C C  | LY60BY | 1 | 0.04 % |  | 1 | 0.03 % |  |  | 31 | C C D C C C / C  | OH1LWZ/M | 1 | 0.04 % |  | 1 | 0.03 % |  |  | 32 | C C D D D D C  | PA2000N | 1 | 0.04 % |  | 1 | 0.03 % |  |  | 33 | C C D / C D C C C  | PJ7/K7ZUM | 1 | 0.04 % |  | 1 | 0.03 % |  |  | 34 | C C D C C C / C C C  | HB9DAX/QRP | 1 | 0.04 % |  | 3 | 0.09 % |  |  | 35 | C C / C D C C  | FP/K8DD | 1 | 0.04 % |  | 3 | 0.09 % |  |  | 36 | C D D C C C  | S57MPU | 1 | 0.04 % |  | 2 | 0.06 % |  |  | 37 | D C / C C D C  | 5B/AJ2O | 1 | 0.04 % |  | 3 | 0.09 % |  |  | 38 | C / C D C C C / C  | F/G3XWK/P | 1 | 0.04 % |  | 1 | 0.03 % |  |  | 39 | C C D C C C C  | SP2IARU | 1 | 0.04 % |  | 1 | 0.03 % |  |  | 40 | C D / C C D C C C  | T9/VE3ZIK | 1 | 0.04 % |  | 1 | 0.03 % |  |  | 41 | C D C C C / C C D  | W1AJT/VE3 | 1 | 0.04 % |  | 1 | 0.03 % |  |  | 42 | C D C C C C  | W4DKBN | 1 | 0.04 % |  | 1 | 0.03 % |  |  | 43 | C C / C C D C  | ZL/KM9D | 1 | 0.04 % |  | 1 | 0.03 % |  |  
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