| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA1ON | 803 | 34.03 % | | 1492 | 35.31 % | | 2 | C C D C C C | CT1BOH | 592 | 25.08 % | | 855 | 20.24 % | | 3 | C C D C | AA1K | 329 | 13.94 % | | 636 | 15.05 % | | 4 | C D C C | D1HQ | 240 | 10.17 % | | 371 | 8.78 % | | 5 | C D C C C | F1AGR | 136 | 5.76 % | | 211 | 4.99 % | | 6 | C D D C | E72U | 92 | 3.90 % | | 356 | 8.43 % | | 7 | C D D C C | A47RS | 29 | 1.23 % | | 54 | 1.28 % | | 8 | D C D C C | 4M5EN | 26 | 1.10 % | | 53 | 1.25 % | | 9 | C D C | C4W | 15 | 0.64 % | | 39 | 0.92 % | | 10 | D C D C | 3Z0X | 13 | 0.55 % | | 22 | 0.52 % | | 11 | D C D C C C | 2E0EBT | 8 | 0.34 % | | 8 | 0.19 % | | 12 | C C / C D C C | DL/K1AR | 7 | 0.30 % | | 15 | 0.36 % | | 13 | C C D C C C / C | DL2KUH/P | 6 | 0.25 % | | 8 | 0.19 % | | 14 | C C / C C D C C | DL/EA7KW | 6 | 0.25 % | | 10 | 0.24 % | | 15 | C C / C D C C C | DL/G4IRN | 5 | 0.21 % | | 7 | 0.17 % | | 16 | C C / C C D C C C | DL/HB9DQL | 5 | 0.21 % | | 9 | 0.21 % | | 17 | C C D C C / C | DH5AS/P | 5 | 0.21 % | | 7 | 0.17 % | | 18 | C C D D D C C C | OE100RAD | 4 | 0.17 % | | 5 | 0.12 % | | 19 | C D C C C / C | F4GKR/P | 4 | 0.17 % | | 9 | 0.21 % | | 20 | C C / C C D C | DL/HG0R | 3 | 0.13 % | | 8 | 0.19 % | | 21 | C C D C / D | RN9T/3 | 3 | 0.13 % | | 3 | 0.07 % | | 22 | C C D C C / C C | RA0LQ/MM | 2 | 0.08 % | | 2 | 0.05 % | | 23 | C C D C / C | OL5E/P | 2 | 0.08 % | | 2 | 0.05 % | | 24 | C / C C D C C | F/DF5RF | 2 | 0.08 % | | 2 | 0.05 % | | 25 | C D C C / D | R8MB/1 | 2 | 0.08 % | | 6 | 0.14 % | | 26 | C C D D D C C | DL100BY | 1 | 0.04 % | | 1 | 0.02 % | | 27 | D C / C C D C | 4L/RC5A | 1 | 0.04 % | | 1 | 0.02 % | | 28 | C / C D C C C | F/G0PZA | 1 | 0.04 % | | 1 | 0.02 % | | 29 | C C D D C C | LM90HQ | 1 | 0.04 % | | 1 | 0.02 % | | 30 | C C D D C C C C | LM90NRRL | 1 | 0.04 % | | 3 | 0.07 % | | 31 | C C D C / C C D | NP4G/KP2 | 1 | 0.04 % | | 1 | 0.02 % | | 32 | D C / C D D C C | 9A/S57KM | 1 | 0.04 % | | 4 | 0.09 % | | 33 | D C D C C / C | 9A6DR/P | 1 | 0.04 % | | 1 | 0.02 % | | 34 | C C D D C | OG55W | 1 | 0.04 % | | 5 | 0.12 % | | 35 | C C D C C C C | DA0WRTC | 1 | 0.04 % | | 3 | 0.07 % | | 36 | C C D D C C C | OV18FWC | 1 | 0.04 % | | 1 | 0.02 % | | 37 | C C D C C / D | NU1AW/9 | 1 | 0.04 % | | 3 | 0.07 % | | 38 | C C D / C C D C C C / C' | HB0/DK3RED/P | 1 | 0.04 % | | 1 | 0.02 % | | 39 | C D / C C D C C | I0/YO3XX | 1 | 0.04 % | | 1 | 0.02 % | | 40 | C D D C C / C C | S51TA/MM | 1 | 0.04 % | | 1 | 0.02 % | | 41 | C D D C C C | S57NML | 1 | 0.04 % | | 1 | 0.02 % | | 42 | C C D C C C / C C | SP5LJP/MM | 1 | 0.04 % | | 1 | 0.02 % | | 43 | C C D / C C D C C | SV2/RW3AL | 1 | 0.04 % | | 1 | 0.02 % | | 44 | C C D / C C D C C C | SV8/HB9FIH | 1 | 0.04 % | | 1 | 0.02 % | | 45 | C C D D D C | YR100R | 1 | 0.04 % | | 1 | 0.02 % | | 46 | C C D C C / C C C | YU1LM/QRP | 1 | 0.04 % | | 2 | 0.05 % | |
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