| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA1ON | 834 | 32.78 % | | 1559 | 35.17 % | | 2 | C C D C C C | CT1BOH | 632 | 24.84 % | | 933 | 21.05 % | | 3 | C C D C | AA1V | 349 | 13.72 % | | 683 | 15.41 % | | 4 | C D C C | B7HQ | 302 | 11.87 % | | 470 | 10.60 % | | 5 | C D C C C | F1IEH | 162 | 6.37 % | | 240 | 5.41 % | | 6 | C D D C | E70A | 91 | 3.58 % | | 243 | 5.48 % | | 7 | D C D C C | 3V8CB | 34 | 1.34 % | | 62 | 1.40 % | | 8 | C D D C C | A47RS | 31 | 1.22 % | | 64 | 1.44 % | | 9 | C D C | C4W | 16 | 0.63 % | | 40 | 0.90 % | | 10 | D C D C | 3Z0X | 14 | 0.55 % | | 21 | 0.47 % | | 11 | D C D C C C | 2I0HGI | 12 | 0.47 % | | 12 | 0.27 % | | 12 | C C D C C / C | DJ4MM/P | 7 | 0.28 % | | 8 | 0.18 % | | 13 | C C / C C D C C | DL/OZ1AA | 5 | 0.20 % | | 7 | 0.16 % | | 14 | C C D C C C / C | DL2KUH/P | 4 | 0.16 % | | 5 | 0.11 % | | 15 | C C / C C D C | DL/HG0R | 4 | 0.16 % | | 7 | 0.16 % | | 16 | C D C C C / C | F8BJE/P | 3 | 0.12 % | | 6 | 0.14 % | | 17 | C C / C D C C | DL/K9NW | 3 | 0.12 % | | 5 | 0.11 % | | 18 | C C D C / D | RG5A/6 | 3 | 0.12 % | | 4 | 0.09 % | | 19 | C C D D D C C C | OE100RJJ | 3 | 0.12 % | | 4 | 0.09 % | | 20 | C D D C C C | R18PAN | 3 | 0.12 % | | 3 | 0.07 % | | 21 | C / C C D C C | F/DF5RF | 2 | 0.08 % | | 2 | 0.05 % | | 22 | C C D C C / C C | RA0LQ/MM | 2 | 0.08 % | | 3 | 0.07 % | | 23 | C C / C C D C C C | DL/HB9DQL | 2 | 0.08 % | | 7 | 0.16 % | | 24 | C C D D C | OG55W | 2 | 0.08 % | | 11 | 0.25 % | | 25 | C C D C C / D | NU1AW/9 | 2 | 0.08 % | | 4 | 0.09 % | | 26 | C D C C / D | R8MB/1 | 2 | 0.08 % | | 2 | 0.05 % | | 27 | C C D D C C C C | LM90NRRL | 2 | 0.08 % | | 4 | 0.09 % | | 28 | C C D / C C D C C | EA6/DK5ON | 2 | 0.08 % | | 4 | 0.09 % | | 29 | C C D D D C C | DL100BY | 1 | 0.04 % | | 1 | 0.02 % | | 30 | C C D C C C C | LM0NRRL | 1 | 0.04 % | | 1 | 0.02 % | | 31 | C D / C C D C C | I0/YO3XX | 1 | 0.04 % | | 1 | 0.02 % | | 32 | D C / C D D C | 9A/S55G | 1 | 0.04 % | | 1 | 0.02 % | | 33 | D C / C D D C C | 9A/S57KM | 1 | 0.04 % | | 3 | 0.07 % | | 34 | D C D D D C | 3Z100K | 1 | 0.04 % | | 1 | 0.02 % | | 35 | C / C D C C C | F/G0PZA | 1 | 0.04 % | | 1 | 0.02 % | | 36 | D C / C C D C | 4L/RC5A | 1 | 0.04 % | | 2 | 0.05 % | | 37 | D C / C C D C C C | 9A/PA3BHF | 1 | 0.04 % | | 1 | 0.02 % | | 38 | C C D D C C C | HF18FWC | 1 | 0.04 % | | 1 | 0.02 % | | 39 | C D D C C / C C | S51TA/MM | 1 | 0.04 % | | 1 | 0.02 % | | 40 | C C / C D C C C | SP/I4ZSQ | 1 | 0.04 % | | 2 | 0.05 % | | 41 | C C D / C C D C C C | SV8/HB9FIH | 1 | 0.04 % | | 1 | 0.02 % | | 42 | C C D / C D D C C | SV9/S55OO | 1 | 0.04 % | | 1 | 0.02 % | | 43 | C C D D D C | YR100R | 1 | 0.04 % | | 1 | 0.02 % | | 44 | C D D C / C | Z35M/P | 1 | 0.04 % | | 1 | 0.02 % | |
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