| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BD4TUC | 375 | 24.64 % | | 411 | 21.75 % | | 2 | C C D C C | AA0AO | 305 | 20.04 % | | 429 | 22.70 % | | 3 | C D C C C | F5OHM | 303 | 19.91 % | | 322 | 17.04 % | | 4 | C D C C | E7DX | 257 | 16.89 % | | 367 | 19.42 % | | 5 | C C D C | AA1K | 249 | 16.36 % | | 312 | 16.51 % | | 6 | C D D C C | S50HQ | 6 | 0.39 % | | 11 | 0.58 % | | 7 | D C D C C | 4F3OM | 5 | 0.33 % | | 10 | 0.53 % | | 8 | C D C | G5W | 4 | 0.26 % | | 4 | 0.21 % | | 9 | C D D C | L33M | 4 | 0.26 % | | 4 | 0.21 % | | 10 | D C D C C C | 7K4AEA | 2 | 0.13 % | | 2 | 0.11 % | | 11 | D C D C | 3W1T | 2 | 0.13 % | | 2 | 0.11 % | | 12 | C C D C C C / D | JI7OED/7 | 2 | 0.13 % | | 2 | 0.11 % | | 13 | C C D C C / C | LU1AW/X | 2 | 0.13 % | | 2 | 0.11 % | | 14 | C C D C C / C D | KH6KG/W5 | 1 | 0.07 % | | 1 | 0.05 % | | 15 | C C D D C C C | LZ70IPA | 1 | 0.07 % | | 1 | 0.05 % | | 16 | C C D C C C / C C C | KN4VSV/QRP | 1 | 0.07 % | | 1 | 0.05 % | | 17 | C C D C / C C | SP1R/MM | 1 | 0.07 % | | 1 | 0.05 % | | 18 | C D C C / D | W1AW/4 | 1 | 0.07 % | | 6 | 0.32 % | | 19 | C C D C / D | ZR2A/4 | 1 | 0.07 % | | 2 | 0.11 % | |
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