| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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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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