| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BD1AAU | 1327 | 27.03 % | | 2382 | 25.37 % | | 2 | C C D C C | AA2MF | 1296 | 26.40 % | | 2645 | 28.17 % | | 3 | C C D C | AA0O | 1025 | 20.88 % | | 2252 | 23.99 % | | 4 | C D C C | D1DX | 490 | 9.98 % | | 810 | 8.63 % | | 5 | C D C C C | F1AKK | 420 | 8.56 % | | 653 | 6.95 % | | 6 | C D D C | E70T | 56 | 1.14 % | | 113 | 1.20 % | | 7 | C D D C C | A41CK | 51 | 1.04 % | | 93 | 0.99 % | | 8 | C D C | C4W | 46 | 0.94 % | | 82 | 0.87 % | | 9 | D C D C C | 3V8SS | 38 | 0.77 % | | 83 | 0.88 % | | 10 | D C D C | 3G2M | 31 | 0.63 % | | 51 | 0.54 % | | 11 | D C D C C C | 2E0CVN | 22 | 0.45 % | | 35 | 0.37 % | | 12 | C C D D C C C | DL50IFM | 13 | 0.26 % | | 35 | 0.37 % | | 13 | C C D D C | EI20C | 12 | 0.24 % | | 27 | 0.29 % | | 14 | C C D D C C | LY56BC | 9 | 0.18 % | | 15 | 0.16 % | | 15 | C D D C C C | E20HHK | 8 | 0.16 % | | 11 | 0.12 % | | 16 | C C D C C C / C | DL2HXY/P | 5 | 0.10 % | | 5 | 0.05 % | | 17 | C C D C C C / D | JA5KJD/1 | 5 | 0.10 % | | 5 | 0.05 % | | 18 | C C D C C C / C C C | IK2MXM/QRP | 5 | 0.10 % | | 7 | 0.07 % | | 19 | C C D D C C C C | LZ50BFRA | 4 | 0.08 % | | 13 | 0.14 % | | 20 | C C D D D C C | DQ750KL | 4 | 0.08 % | | 8 | 0.09 % | | 21 | C C D C C / C | DF7BA/P | 3 | 0.06 % | | 5 | 0.05 % | | 22 | C C D D D C C C | DL100BKW | 3 | 0.06 % | | 6 | 0.06 % | | 23 | C C D C C / C C C | DJ3DQ/QRP | 2 | 0.04 % | | 5 | 0.05 % | | 24 | C C D C / D | AI0Y/9 | 2 | 0.04 % | | 3 | 0.03 % | | 25 | D C D C C C / D | 7K1MAG/2 | 2 | 0.04 % | | 3 | 0.03 % | | 26 | C C D C / C | DL4X/P | 2 | 0.04 % | | 2 | 0.02 % | | 27 | D C D D C C | 4K75FO | 1 | 0.02 % | | 3 | 0.03 % | | 28 | C D / C D D C | E7/Z35M | 1 | 0.02 % | | 3 | 0.03 % | | 29 | C C D / C D D C C | CT8/S51TA | 1 | 0.02 % | | 1 | 0.01 % | | 30 | D C D C C C C C C C C | 4U9STAYHOME | 1 | 0.02 % | | 2 | 0.02 % | | 31 | C / C D D C | F/E72T | 1 | 0.02 % | | 1 | 0.01 % | | 32 | D C D / C D C C | 5Z4/G3AB | 1 | 0.02 % | | 2 | 0.02 % | | 33 | D C D D C C C C | 8J17CALL | 1 | 0.02 % | | 1 | 0.01 % | | 34 | C C D / C C D C | EA5/RV2A | 1 | 0.02 % | | 2 | 0.02 % | | 35 | C C D C / C C C | IR9R/QRP | 1 | 0.02 % | | 1 | 0.01 % | | 36 | C C / C D C C | EW/R3XA | 1 | 0.02 % | | 1 | 0.01 % | | 37 | C C D / C D C C C | KP4/K6DTT | 1 | 0.02 % | | 1 | 0.01 % | | 38 | C C / C C D C C C | LY/IT9AUG | 1 | 0.02 % | | 1 | 0.01 % | | 39 | C C D D D C | LY175Z | 1 | 0.02 % | | 3 | 0.03 % | | 40 | C C D C C / D | IQ5OX/5 | 1 | 0.02 % | | 1 | 0.01 % | | 41 | C C D / C D C C | CT7/K9PM | 1 | 0.02 % | | 1 | 0.01 % | | 42 | C D C C C / C C C | M6VIT/QRP | 1 | 0.02 % | | 1 | 0.01 % | | 43 | C C D C C C C | OH5STAY | 1 | 0.02 % | | 1 | 0.01 % | | 44 | C C D C C C C C C C C | OH5STAYHOME | 1 | 0.02 % | | 1 | 0.01 % | | 45 | C C / C D C C C | OK/M0SIS | 1 | 0.02 % | | 1 | 0.01 % | | 46 | C C D D D D C C | OL1941FP | 1 | 0.02 % | | 2 | 0.02 % | | 47 | C C / C C D C C | OZ/SP1OT | 1 | 0.02 % | | 1 | 0.01 % | | 48 | C D C C / D | R8MB/1 | 1 | 0.02 % | | 1 | 0.01 % | | 49 | C C D C C / C C | RA0LQ/MM | 1 | 0.02 % | | 2 | 0.02 % | | 50 | C D D D D C | S5400J | 1 | 0.02 % | | 1 | 0.01 % | | 51 | C C D C C C / C C | UW5EJX/MM | 1 | 0.02 % | | 2 | 0.02 % | | 52 | C D / C C D C C | W2/EU1KI | 1 | 0.02 % | | 1 | 0.01 % | | 53 | C C D / C C D C C | ZP6/HC5WC | 1 | 0.02 % | | 1 | 0.01 % | | 54 | C C D / C C D C C C | ZP6/LU8EOT | 1 | 0.02 % | | 1 | 0.01 % | |
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