| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C D C C C | K0QEU | 47 | 42.34 % | | 47 | 42.34 % | | 2 | C C D C C C | KA0DOS | 31 | 27.93 % | | 31 | 27.93 % | | 3 | C C D C C | AG5AB | 15 | 13.51 % | | 15 | 13.51 % | | 4 | C D C C | K0SW | 12 | 10.81 % | | 12 | 10.81 % | | 5 | C C D C | AI0E | 5 | 4.50 % | | 5 | 4.50 % | | 6 | C D C | W2C | 1 | 0.90 % | | 1 | 0.90 % | |
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