| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C D C C | K4JJ | 6 | 42.86 % | | 6 | 30.00 % | | 2 | C D C C C | K4AXV | 3 | 21.43 % | | 3 | 15.00 % | | 3 | C C D C C C | KN4PYF | 2 | 14.29 % | | 2 | 10.00 % | | 4 | C C D C | AJ4M | 1 | 7.14 % | | 1 | 5.00 % | | 5 | C C D C C | AD4DN | 1 | 7.14 % | | 1 | 5.00 % | | 6 | C D C | N4N | 1 | 7.14 % | | 1 | 5.00 % | |
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