| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | RA4NCC | 5 | 33.33 % | | 44 | 44.00 % | | 2 | C C D C C | RK4NB | 4 | 26.67 % | | 14 | 14.00 % | | 3 | C D C C C | R4NAU | 3 | 20.00 % | | 18 | 18.00 % | | 4 | C D C C | R4NX | 2 | 13.33 % | | 18 | 18.00 % | | 5 | C C D C | RT4O | 1 | 6.67 % | | 6 | 6.00 % | |
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