| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA1ON | 666 | 31.74 % | | 1180 | 33.14 % | | 2 | C C D C C C | CS7ACF | 431 | 20.54 % | | 594 | 16.68 % | | 3 | C D C C | B7HQ | 314 | 14.97 % | | 459 | 12.89 % | | 4 | C C D C | AA1K | 310 | 14.78 % | | 566 | 15.89 % | | 5 | C D C C C | F1PSX | 147 | 7.01 % | | 213 | 5.98 % | | 6 | C D D C | E73Y | 86 | 4.10 % | | 304 | 8.54 % | | 7 | C D D C C | A41NN | 33 | 1.57 % | | 49 | 1.38 % | | 8 | D C D C C | 3V8BB | 28 | 1.33 % | | 48 | 1.35 % | | 9 | C D C | C4W | 14 | 0.67 % | | 32 | 0.90 % | | 10 | D C D C | 3Z0X | 13 | 0.62 % | | 20 | 0.56 % | | 11 | C C / C C D C C | DL/EA7KW | 5 | 0.24 % | | 12 | 0.34 % | | 12 | C C / C D C C | DL/K5KG | 5 | 0.24 % | | 12 | 0.34 % | | 13 | C C / C C D C | DL/HG0R | 5 | 0.24 % | | 11 | 0.31 % | | 14 | C C / C C D C C C | DL/HB9DQL | 4 | 0.19 % | | 8 | 0.22 % | | 15 | C D C C C / C | F4GKR/P | 3 | 0.14 % | | 3 | 0.08 % | | 16 | C C D C C / C | DJ4MM/P | 3 | 0.14 % | | 4 | 0.11 % | | 17 | C D C C / D | R8MB/1 | 3 | 0.14 % | | 4 | 0.11 % | | 18 | D C D C C C | 2E0CVN | 2 | 0.10 % | | 2 | 0.06 % | | 19 | C / C C D C C | F/DF5RF | 2 | 0.10 % | | 2 | 0.06 % | | 20 | C C D D C | OG55W | 2 | 0.10 % | | 8 | 0.22 % | | 21 | C C / C D C C C | DL/I4VEQ | 2 | 0.10 % | | 3 | 0.08 % | | 22 | C C D C / D | RG5A/6 | 2 | 0.10 % | | 2 | 0.06 % | | 23 | C C D C C C / C | DL5RMH/P | 2 | 0.10 % | | 3 | 0.08 % | | 24 | C C D C C C / C C C | EA7AAW/QRP | 1 | 0.05 % | | 1 | 0.03 % | | 25 | D C / C D D C C | 9A/S57KM | 1 | 0.05 % | | 2 | 0.06 % | | 26 | C C D D C C C C | LM90NRRL | 1 | 0.05 % | | 2 | 0.06 % | | 27 | C C D C C / D | NU1AW/9 | 1 | 0.05 % | | 3 | 0.08 % | | 28 | C C D D D C C C | OE100SPW | 1 | 0.05 % | | 1 | 0.03 % | | 29 | C C D D C C C | DL60SOP | 1 | 0.05 % | | 1 | 0.03 % | | 30 | C C C C / C C D C C | PGDL/OZ7AM | 1 | 0.05 % | | 1 | 0.03 % | | 31 | C C C C D C | PGSF3A | 1 | 0.05 % | | 1 | 0.03 % | | 32 | D C D D D C | 3Z100K | 1 | 0.05 % | | 1 | 0.03 % | | 33 | D C / C C D C | 4L/RC5A | 1 | 0.05 % | | 2 | 0.06 % | | 34 | C D D C C / C C | S51TA/MM | 1 | 0.05 % | | 2 | 0.06 % | | 35 | C D D C C C | S57NML | 1 | 0.05 % | | 1 | 0.03 % | | 36 | C C D / C C D C C | SV2/RW3AL | 1 | 0.05 % | | 1 | 0.03 % | | 37 | C C D / C C D C C C | SV8/HB9FIH | 1 | 0.05 % | | 1 | 0.03 % | | 38 | C C D D C C C C C | SX12ASTRO | 1 | 0.05 % | | 1 | 0.03 % | | 39 | C C D C C / C C | YL3IZ/MM | 1 | 0.05 % | | 1 | 0.03 % | |
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