| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA4TI | 565 | 27.90 % | | 593 | 28.25 % | | 2 | C C D C C C | BD1IIJ | 532 | 26.27 % | | 546 | 26.01 % | | 3 | C C D C | AA2A | 525 | 25.93 % | | 546 | 26.01 % | | 4 | C D C C | E7CW | 146 | 7.21 % | | 150 | 7.15 % | | 5 | C D C C C | F4CVQ | 103 | 5.09 % | | 106 | 5.05 % | | 6 | C D D C C | A41CK | 27 | 1.33 % | | 28 | 1.33 % | | 7 | C D D C | E70T | 24 | 1.19 % | | 25 | 1.19 % | | 8 | D C D C C | 3V8SS | 17 | 0.84 % | | 18 | 0.86 % | | 9 | C D C | C4W | 17 | 0.84 % | | 17 | 0.81 % | | 10 | D C D C | 3E3E | 14 | 0.69 % | | 14 | 0.67 % | | 11 | D C D C C C | 5B4APL | 10 | 0.49 % | | 10 | 0.48 % | | 12 | C C D D C C C | DL50IFM | 8 | 0.40 % | | 8 | 0.38 % | | 13 | C C D D C | EI20C | 7 | 0.35 % | | 7 | 0.33 % | | 14 | C C D D C C | LZ55HW | 6 | 0.30 % | | 7 | 0.33 % | | 15 | C D D C C C | E24OYI | 3 | 0.15 % | | 3 | 0.14 % | | 16 | C C D D D C C C | DL100BKW | 2 | 0.10 % | | 2 | 0.10 % | | 17 | C C D D C C C C | LZ50BFRA | 2 | 0.10 % | | 2 | 0.10 % | | 18 | D C D C C C / D | 7K1MAG/2 | 1 | 0.05 % | | 1 | 0.05 % | | 19 | D C D C C C C C C C C | 4U9STAYHOME | 1 | 0.05 % | | 1 | 0.05 % | | 20 | C / C D D C | F/E72T | 1 | 0.05 % | | 1 | 0.05 % | | 21 | D C D / C D C C | 5Z4/G3AB | 1 | 0.05 % | | 1 | 0.05 % | | 22 | C C D C C C / D | JH0UUY/1 | 1 | 0.05 % | | 1 | 0.05 % | | 23 | C C D D D C | LY175Z | 1 | 0.05 % | | 1 | 0.05 % | | 24 | C C D C C C / C C C | IK2MXM/QRP | 1 | 0.05 % | | 1 | 0.05 % | | 25 | C C D C / C C C | IR9R/QRP | 1 | 0.05 % | | 1 | 0.05 % | | 26 | C C D C C C C C C C C | OH5STAYHOME | 1 | 0.05 % | | 1 | 0.05 % | | 27 | C C D D D D C C | OL1941FP | 1 | 0.05 % | | 1 | 0.05 % | | 28 | C C D D D C C | OL901AB | 1 | 0.05 % | | 1 | 0.05 % | | 29 | C C D C / C | OT5D/P | 1 | 0.05 % | | 1 | 0.05 % | | 30 | C C D / C D C C C | PJ4/K4BAI | 1 | 0.05 % | | 1 | 0.05 % | | 31 | C C D C C C / C | UR5GAW/P | 1 | 0.05 % | | 1 | 0.05 % | | 32 | C C D C C / C C C | YU1LM/QRP | 1 | 0.05 % | | 1 | 0.05 % | | 33 | C C D / C C D C C | ZP6/HC5WC | 1 | 0.05 % | | 1 | 0.05 % | | 34 | C C D C / D | ZR2A/4 | 1 | 0.05 % | | 1 | 0.05 % | |
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