| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C D C C C | K0RCJ | 21 | 36.21 % | | 21 | 35.59 % | | 2 | C C D C C C | KA5LYL | 12 | 20.69 % | | 12 | 20.34 % | | 3 | C C D C C | AA5RO | 12 | 20.69 % | | 13 | 22.03 % | | 4 | C D C C | K5IX | 6 | 10.34 % | | 6 | 10.17 % | | 5 | C C D C | AB0O | 4 | 6.90 % | | 4 | 6.78 % | | 6 | C D C | K4A | 3 | 5.17 % | | 3 | 5.08 % | |
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