| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA0AI | 1146 | 22.68 % | | 1814 | 20.01 % | | 2 | C C D C C C | CM8NMN | 1124 | 22.24 % | | 1587 | 17.50 % | | 3 | C D C C | E7CW | 947 | 18.74 % | | 2190 | 24.15 % | | 4 | C C D C | AA1K | 947 | 18.74 % | | 1973 | 21.76 % | | 5 | C D C C C | C6AGU | 651 | 12.88 % | | 1098 | 12.11 % | | 6 | C D D C C | A45XR | 48 | 0.95 % | | 69 | 0.76 % | | 7 | C D D C | A44A | 44 | 0.87 % | | 89 | 0.98 % | | 8 | D C D C | 3B8M | 34 | 0.67 % | | 60 | 0.66 % | | 9 | D C D C C | 4O7CC | 30 | 0.59 % | | 51 | 0.56 % | | 10 | C D C | C4W | 29 | 0.57 % | | 49 | 0.54 % | | 11 | D C D C C C | 2E0CVN | 10 | 0.20 % | | 14 | 0.15 % | | 12 | C D D C C C | E73FDE | 4 | 0.08 % | | 12 | 0.13 % | | 13 | C D C C / D | K0XB/6 | 3 | 0.06 % | | 4 | 0.04 % | | 14 | C C D / C C D C | EA8/OL1A | 3 | 0.06 % | | 3 | 0.03 % | | 15 | C C D C C C / D | JH1TXG/9 | 3 | 0.06 % | | 6 | 0.07 % | | 16 | C C D C / D | AI0Y/9 | 2 | 0.04 % | | 4 | 0.04 % | | 17 | D C / C C D C C | 5B/RN3QO | 2 | 0.04 % | | 3 | 0.03 % | | 18 | C D / C C D C | V4/WX4F | 2 | 0.04 % | | 2 | 0.02 % | | 19 | C C D / C C D C C C | EA8/IK1PMR | 2 | 0.04 % | | 5 | 0.06 % | | 20 | C C D D C C C | HB90TOC | 2 | 0.04 % | | 5 | 0.06 % | | 21 | C C D C C / C D | KH6KG/W5 | 2 | 0.04 % | | 3 | 0.03 % | | 22 | C D C C C / C | G4NXG/M | 2 | 0.04 % | | 2 | 0.02 % | | 23 | C C D D C C | TM20CI | 2 | 0.04 % | | 4 | 0.04 % | | 24 | D C D D D C C C | 3Z100PIP | 1 | 0.02 % | | 2 | 0.02 % | | 25 | C C C D C C | EAA8ZT | 1 | 0.02 % | | 1 | 0.01 % | | 26 | C C D / C D C C C | CT7/G4BJM | 1 | 0.02 % | | 2 | 0.02 % | | 27 | D C D / C C D C C | 8R1/AG6UT | 1 | 0.02 % | | 1 | 0.01 % | | 28 | C C D C C / C C C | HZ1TT/QRP | 1 | 0.02 % | | 1 | 0.01 % | | 29 | C C D C C C / C C | IU1DUB/MM | 1 | 0.02 % | | 1 | 0.01 % | | 30 | C D D C D | M00X0 | 1 | 0.02 % | | 1 | 0.01 % | | 31 | D C D D C | 4U25B | 1 | 0.02 % | | 2 | 0.02 % | | 32 | C D C C C / C D | K5BND/W7 | 1 | 0.02 % | | 1 | 0.01 % | | 33 | C C / C D C C C | OH/M0CFW | 1 | 0.02 % | | 1 | 0.01 % | | 34 | C C D C C / D | RZ9SZ/3 | 1 | 0.02 % | | 1 | 0.01 % | | 35 | C C / C D C C | MW/R6AF | 1 | 0.02 % | | 3 | 0.03 % | | 36 | C C D C / C D | NH6T/W4 | 1 | 0.02 % | | 1 | 0.01 % | | 37 | C D / C D D C C | W2/E78WW | 1 | 0.02 % | | 1 | 0.01 % | | 38 | C C D C C / C C | YL3IZ/MM | 1 | 0.02 % | | 1 | 0.01 % | |
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