| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA1SU | 842 | 34.74 % | | 1519 | 34.49 % | | 2 | C C D C C C | CS7AMH | 628 | 25.91 % | | 922 | 20.94 % | | 3 | C C D C | AA1K | 321 | 13.24 % | | 672 | 15.26 % | | 4 | C D C C | E7DX | 231 | 9.53 % | | 377 | 8.56 % | | 5 | C D C C C | F1RAF | 140 | 5.78 % | | 219 | 4.97 % | | 6 | C D D C | E70A | 91 | 3.75 % | | 380 | 8.63 % | | 7 | C D D C C | A47RS | 29 | 1.20 % | | 65 | 1.48 % | | 8 | D C D C C | 3V8CB | 29 | 1.20 % | | 55 | 1.25 % | | 9 | C D C | C4W | 17 | 0.70 % | | 45 | 1.02 % | | 10 | D C D C | 3Z0X | 13 | 0.54 % | | 22 | 0.50 % | | 11 | D C D C C C | 2E0CVN | 9 | 0.37 % | | 9 | 0.20 % | | 12 | C C D C C / C | DB7GE/M | 9 | 0.37 % | | 13 | 0.30 % | | 13 | C C / C D C C | DL/K3LA | 6 | 0.25 % | | 12 | 0.27 % | | 14 | C C / C C D C | DL/HG0R | 6 | 0.25 % | | 12 | 0.27 % | | 15 | C C / C C D C C | DL/EA7KW | 5 | 0.21 % | | 10 | 0.23 % | | 16 | C C D C C C / C | DL2KUH/P | 5 | 0.21 % | | 6 | 0.14 % | | 17 | C C / C C D C C C | DL/HB9DQL | 4 | 0.17 % | | 7 | 0.16 % | | 18 | C D C C C / C | F4GKR/P | 3 | 0.12 % | | 4 | 0.09 % | | 19 | C C / C D C C C | DL/I4VEQ | 2 | 0.08 % | | 3 | 0.07 % | | 20 | C D C C / D | R8MB/1 | 2 | 0.08 % | | 3 | 0.07 % | | 21 | C C D / C C D C C | EA6/DK5ON | 2 | 0.08 % | | 2 | 0.05 % | | 22 | C D D C C C | S56WYB | 2 | 0.08 % | | 2 | 0.05 % | | 23 | C C D C C / D | NU1AW/9 | 2 | 0.08 % | | 5 | 0.11 % | | 24 | C / C C D C C | F/DF5RF | 2 | 0.08 % | | 3 | 0.07 % | | 25 | C C D D C | OG55W | 2 | 0.08 % | | 7 | 0.16 % | | 26 | C C D D C C C | DB25ONN | 1 | 0.04 % | | 1 | 0.02 % | | 27 | D C D D D C | 3Z100K | 1 | 0.04 % | | 1 | 0.02 % | | 28 | D C D C C C / C | 9A5MPV/P | 1 | 0.04 % | | 1 | 0.02 % | | 29 | C D / C C D C C | I0/YO3XX | 1 | 0.04 % | | 1 | 0.02 % | | 30 | C C D C C C / C C C | EA7AAW/QRP | 1 | 0.04 % | | 1 | 0.02 % | | 31 | C C D D C C | LM90HQ | 1 | 0.04 % | | 3 | 0.07 % | | 32 | C C D D C C C C | LM90NRRL | 1 | 0.04 % | | 1 | 0.02 % | | 33 | D C / C D D C C | 9A/S57KM | 1 | 0.04 % | | 2 | 0.05 % | | 34 | C C D D D C C C | OE100SPW | 1 | 0.04 % | | 2 | 0.05 % | | 35 | C D D C C C C | J32FIFA | 1 | 0.04 % | | 1 | 0.02 % | | 36 | C C D C C C C | DA0WRTC | 1 | 0.04 % | | 1 | 0.02 % | | 37 | C C D C / D | RT9T/3 | 1 | 0.04 % | | 1 | 0.02 % | | 38 | C D D C C / C C | S51TA/MM | 1 | 0.04 % | | 3 | 0.07 % | | 39 | D C / C C D C | 4L/RC5A | 1 | 0.04 % | | 1 | 0.02 % | | 40 | C C D C C C / C C | SP5LJP/MM | 1 | 0.04 % | | 1 | 0.02 % | | 41 | C C D / C D D C C | SV9/S55OO | 1 | 0.04 % | | 1 | 0.02 % | | 42 | C C D D C C C C C | SX12ASTRO | 1 | 0.04 % | | 1 | 0.02 % | | 43 | C D C C C / C C D | W6PNG/VY2 | 1 | 0.04 % | | 1 | 0.02 % | | 44 | C C D C C / C C | YL3IZ/MM | 1 | 0.04 % | | 2 | 0.05 % | | 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 % | | 47 | C D D C / C | Z35M/P | 1 | 0.04 % | | 1 | 0.02 % | |
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