| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | AP5ARS | 1199 | 33.18 % | | 1527 | 30.15 % | | 2 | C C D C C | AA0AW | 891 | 24.65 % | | 1213 | 23.95 % | | 3 | C C D C | AA3R | 650 | 17.99 % | | 1038 | 20.49 % | | 4 | C D C C C | D2ACE | 393 | 10.87 % | | 510 | 10.07 % | | 5 | C D C C | E7CW | 150 | 4.15 % | | 214 | 4.23 % | | 6 | C D D C C | A41DL | 52 | 1.44 % | | 68 | 1.34 % | | 7 | C D D C | A41A | 51 | 1.41 % | | 92 | 1.82 % | | 8 | D C D C C C | 2E0BAQ | 43 | 1.19 % | | 55 | 1.09 % | | 9 | D C D C C | 3V8SS | 41 | 1.13 % | | 50 | 0.99 % | | 10 | C D C | C4W | 36 | 1.00 % | | 71 | 1.40 % | | 11 | D C D C | 3W9A | 28 | 0.77 % | | 47 | 0.93 % | | 12 | C D D C C C | E29TGW | 7 | 0.19 % | | 10 | 0.20 % | | 13 | C C D D C C C | DL70BRD | 7 | 0.19 % | | 7 | 0.14 % | | 14 | C C D D C | HB90G | 6 | 0.17 % | | 10 | 0.20 % | | 15 | C C D C C C / C C C | DO1BOM/QRP | 5 | 0.14 % | | 5 | 0.10 % | | 16 | C D C C C / C | F4JTP/P | 5 | 0.14 % | | 8 | 0.16 % | | 17 | C C D C C C / D | IK0MWB/6 | 5 | 0.14 % | | 5 | 0.10 % | | 18 | C C D C C / C C C | DC6NS/QRP | 5 | 0.14 % | | 5 | 0.10 % | | 19 | C C D C C C / C | DL2YCV/P | 4 | 0.11 % | | 4 | 0.08 % | | 20 | C C D D C C | EV80OB | 4 | 0.11 % | | 7 | 0.14 % | | 21 | C C / C C D C C | ER/UT1ZZ | 3 | 0.08 % | | 4 | 0.08 % | | 22 | C C D C C / C | DB9LG/P | 3 | 0.08 % | | 4 | 0.08 % | | 23 | D C D D D C | 9A100V | 2 | 0.06 % | | 4 | 0.08 % | | 24 | C C D D D C C | HG150BP | 2 | 0.06 % | | 2 | 0.04 % | | 25 | C C D D C C C C C | HG24TISZA | 2 | 0.06 % | | 3 | 0.06 % | | 26 | C C D D C C C C | OP24WARD | 2 | 0.06 % | | 2 | 0.04 % | | 27 | C C D / C C D C C C | IL7/IK7YTT | 2 | 0.06 % | | 2 | 0.04 % | | 28 | C C D / C C D C C | CT7/VA3FH | 2 | 0.06 % | | 2 | 0.04 % | | 29 | C D D D C C C | S570CST | 2 | 0.06 % | | 5 | 0.10 % | | 30 | D C / C C D C C | 9A/AH2EM | 1 | 0.03 % | | 1 | 0.02 % | | 31 | D C D D C | 9A44A | 1 | 0.03 % | | 3 | 0.06 % | | 32 | C C D / C C D C C C / C | HB9/OE5AMR/P | 1 | 0.03 % | | 1 | 0.02 % | | 33 | C C D / C D C C C | IM0/I5JVA | 1 | 0.03 % | | 1 | 0.02 % | | 34 | C C D C / C D | KH7X/W7 | 1 | 0.03 % | | 1 | 0.02 % | | 35 | C D C C C / C C C | G0LDJ/QRP | 1 | 0.03 % | | 1 | 0.02 % | | 36 | C D C C C C | G7LJIL | 1 | 0.03 % | | 1 | 0.02 % | | 37 | C C D C / C C | RD1A/MM | 1 | 0.03 % | | 1 | 0.02 % | | 38 | C C D C C / D | RD7LB/3 | 1 | 0.03 % | | 2 | 0.04 % | | 39 | C C D C / C | RV3X/P | 1 | 0.03 % | | 1 | 0.02 % | | 40 | C C D D D C C C C C | OE100RADIO | 1 | 0.03 % | | 1 | 0.02 % | | 41 | C C D D D C C C | SK100KTH | 1 | 0.03 % | | 1 | 0.02 % | |
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