| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C D C C C | K0GYQ | 84 | 37.33 % | | 84 | 36.36 % | | 2 | C C D C C C | KA2OEE | 51 | 22.67 % | | 51 | 22.08 % | | 3 | C D C C | I4WL | 45 | 20.00 % | | 45 | 19.48 % | | 4 | C C D C C | AA4JW | 27 | 12.00 % | | 27 | 11.69 % | | 5 | C C D C | AC1L | 12 | 5.33 % | | 12 | 5.19 % | | 6 | C D C | K0M | 5 | 2.22 % | | 5 | 2.16 % | | 7 | C D D C | W32A | 1 | 0.44 % | | 1 | 0.43 % | |
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