| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BD7JNA | 1610 | 32.54 % | | 3195 | 28.83 % | | 2 | C C D C C | AA1AC | 1450 | 29.30 % | | 3612 | 32.59 % | | 3 | C C D C | AA0O | 654 | 13.22 % | | 1858 | 16.77 % | | 4 | C D C C C | F1DHX | 498 | 10.06 % | | 804 | 7.26 % | | 5 | C D C C | B1HQ | 424 | 8.57 % | | 830 | 7.49 % | | 6 | D C D C C | 4F3OM | 54 | 1.09 % | | 151 | 1.36 % | | 7 | C D D C C | A41CK | 50 | 1.01 % | | 146 | 1.32 % | | 8 | C D D C | E25Q | 32 | 0.65 % | | 67 | 0.60 % | | 9 | D C D C C C | 2E0CVN | 30 | 0.61 % | | 50 | 0.45 % | | 10 | D C D C | 3Z0X | 26 | 0.53 % | | 83 | 0.75 % | | 11 | C D C | C4W | 18 | 0.36 % | | 55 | 0.50 % | | 12 | C C D C C C / C | DL4HCF/P | 10 | 0.20 % | | 18 | 0.16 % | | 13 | C D D C C C | E20NGF | 7 | 0.14 % | | 15 | 0.14 % | | 14 | C C D C C / C | DH9DX/P | 6 | 0.12 % | | 10 | 0.09 % | | 15 | C C D D C C C | DQ60ANT | 6 | 0.12 % | | 20 | 0.18 % | | 16 | C C D D C C | BV30HQ | 5 | 0.10 % | | 18 | 0.16 % | | 17 | C C D D D C C C | OE100HLF | 5 | 0.10 % | | 8 | 0.07 % | | 18 | C C D C C C / D | IK4RQJ/1 | 4 | 0.08 % | | 9 | 0.08 % | | 19 | C C / C C D C C | DL/YL3GX | 4 | 0.08 % | | 9 | 0.08 % | | 20 | C D D D D C C | S5230WW | 4 | 0.08 % | | 9 | 0.08 % | | 21 | C D D D D C | S5230F | 3 | 0.06 % | | 7 | 0.06 % | | 22 | C C D C C C C | II4WRTC | 3 | 0.06 % | | 8 | 0.07 % | | 23 | C C / C C D C C C | SM/DL4JWU | 3 | 0.06 % | | 9 | 0.08 % | | 24 | D C / C C D C C C | 9A/HA5MIG | 3 | 0.06 % | | 6 | 0.05 % | | 25 | C D C C C / C | F4EEJ/P | 3 | 0.06 % | | 3 | 0.03 % | | 26 | C C D C C C / C C C | DG0JPM/QRP | 2 | 0.04 % | | 2 | 0.02 % | | 27 | D C / C D D C C | 9A/S57GM | 2 | 0.04 % | | 6 | 0.05 % | | 28 | D C D D C C C | 3Z20OIF | 2 | 0.04 % | | 4 | 0.04 % | | 29 | C C D / C C D C C | HB3/DO1LO | 2 | 0.04 % | | 4 | 0.04 % | | 30 | C C D C C / D | LZ1JZ/1 | 2 | 0.04 % | | 6 | 0.05 % | | 31 | C C D / C C D C | EA5/RV2A | 2 | 0.04 % | | 3 | 0.03 % | | 32 | C C D D C C C C | DL25GDXF | 2 | 0.04 % | | 11 | 0.10 % | | 33 | C C D C C / C C C | TA5YY/QRP | 2 | 0.04 % | | 6 | 0.05 % | | 34 | C D C C / C | R7AB/P | 2 | 0.04 % | | 2 | 0.02 % | | 35 | D C / C C D C | 4O/KL2A | 1 | 0.02 % | | 3 | 0.03 % | | 36 | C / C C D C C C | I/OE1MSW | 1 | 0.02 % | | 1 | 0.01 % | | 37 | C C D / C D C C | KP4/K9AW | 1 | 0.02 % | | 1 | 0.01 % | | 38 | C / C C D C C | F/DJ4MZ | 1 | 0.02 % | | 2 | 0.02 % | | 39 | C C D D D C C C C | OH100SRAL | 1 | 0.02 % | | 2 | 0.02 % | | 40 | C C / C C D C C C / C | OK/DL2DXA/P | 1 | 0.02 % | | 4 | 0.04 % | | 41 | C C / C C D C | OZ/SO2U | 1 | 0.02 % | | 2 | 0.02 % | | 42 | C C / C C D C C / C | PA/DL2AW/P | 1 | 0.02 % | | 4 | 0.04 % | | 43 | C C D D D C C / D | OE100BL/7 | 1 | 0.02 % | | 1 | 0.01 % | | 44 | D C / C D C C | 9A/K7GM | 1 | 0.02 % | | 3 | 0.03 % | | 45 | C C D / C C D C C C | IT9/IZ2WFL | 1 | 0.02 % | | 1 | 0.01 % | | 46 | C D D D D C C C | S5730MHR | 1 | 0.02 % | | 1 | 0.01 % | | 47 | C C D C / C | LY3X/P | 1 | 0.02 % | | 1 | 0.01 % | | 48 | C D / C D D C | E7/Z35M | 1 | 0.02 % | | 5 | 0.05 % | | 49 | C C D D C | TM12M | 1 | 0.02 % | | 1 | 0.01 % | | 50 | C C D C C C / C C | UA1OJL/MM | 1 | 0.02 % | | 1 | 0.01 % | | 51 | C D C C / C C D | W1AW/KL7 | 1 | 0.02 % | | 2 | 0.02 % | | 52 | C C D / C D C C C | WP4/K0BBC | 1 | 0.02 % | | 3 | 0.03 % | |
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