| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C D C C C | K6RLQ | 27 | 28.13 % | | 30 | 28.04 % | | 2 | C C D C C C | KA7MAY | 18 | 18.75 % | | 18 | 16.82 % | | 3 | C C D C | AI9Q | 18 | 18.75 % | | 20 | 18.69 % | | 4 | C D C C | K2RM | 14 | 14.58 % | | 16 | 14.95 % | | 5 | C C D C C | AA7DK | 13 | 13.54 % | | 16 | 14.95 % | | 6 | C C D C C / D | AA5TL/7 | 2 | 2.08 % | | 3 | 2.80 % | | 7 | C C D C C C / D | KA6BIM/7 | 2 | 2.08 % | | 2 | 1.87 % | | 8 | C D C | K7N | 1 | 1.04 % | | 1 | 0.93 % | | 9 | C D C C C / D | N0KVN/7 | 1 | 1.04 % | | 1 | 0.93 % | |
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