| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BG4VRG | 1197 | 43.85 % | | 1409 | 42.98 % | | 2 | C C D C C | AA4JS | 700 | 25.64 % | | 872 | 26.60 % | | 3 | C D C C C | D7OLI | 427 | 15.64 % | | 493 | 15.04 % | | 4 | C D C C | F2YT | 109 | 3.99 % | | 125 | 3.81 % | | 5 | C C D C | AD2Z | 74 | 2.71 % | | 116 | 3.54 % | | 6 | D C D C C C | 2D0MGV | 29 | 1.06 % | | 30 | 0.92 % | | 7 | C C D C C C / C | DC1TRX/P | 23 | 0.84 % | | 25 | 0.76 % | | 8 | C C D C C / C | DB6VP/P | 22 | 0.81 % | | 23 | 0.70 % | | 9 | D C D C C | 4L6QL | 20 | 0.73 % | | 32 | 0.98 % | | 10 | C D D C C | A61FK | 18 | 0.66 % | | 19 | 0.58 % | | 11 | C D C C C / C | F1UMO/M | 11 | 0.40 % | | 11 | 0.34 % | | 12 | C C D C / C | DA2X/P | 10 | 0.37 % | | 12 | 0.37 % | | 13 | C C D C C C / C C C | DL4JAL/QRP | 9 | 0.33 % | | 20 | 0.61 % | | 14 | C C / C C D C C C | DL/OE5EVM | 7 | 0.26 % | | 8 | 0.24 % | | 15 | C C D C C C / D | IV3HBW/7 | 6 | 0.22 % | | 6 | 0.18 % | | 16 | C C D D C C C | AO18FWC | 5 | 0.18 % | | 5 | 0.15 % | | 17 | C C D D D C C C | LZ340PPW | 5 | 0.18 % | | 8 | 0.24 % | | 18 | C D D C C C | E20HHK | 5 | 0.18 % | | 5 | 0.15 % | | 19 | D C D C | 4J4K | 5 | 0.18 % | | 5 | 0.15 % | | 20 | C D C C C / C C C | F6DPT/QRP | 4 | 0.15 % | | 4 | 0.12 % | | 21 | C D D C | E77O | 3 | 0.11 % | | 4 | 0.12 % | | 22 | C C D C C / D | LZ2OQ/1 | 3 | 0.11 % | | 4 | 0.12 % | | 23 | C C D / C C D C C | CT7/VA3QF | 3 | 0.11 % | | 4 | 0.12 % | | 24 | C D / C C D C C C | I0/KC2TRX | 3 | 0.11 % | | 3 | 0.09 % | | 25 | C C D C C / C C C | LZ1QN/QRP | 2 | 0.07 % | | 3 | 0.09 % | | 26 | C C D D D C | HF100A | 2 | 0.07 % | | 2 | 0.06 % | | 27 | D C D C C C / C | 2E0IBU/M | 2 | 0.07 % | | 2 | 0.06 % | | 28 | C D C C / C | R5RT/P | 2 | 0.07 % | | 3 | 0.09 % | | 29 | C C D D C C C C | LM10SOTA | 2 | 0.07 % | | 2 | 0.06 % | | 30 | C C D / C C D C C C | EA6/HB9AFH | 2 | 0.07 % | | 2 | 0.06 % | | 31 | D C D C C C / C C C / C ' | 2E0WVB/QRP/P | 1 | 0.04 % | | 1 | 0.03 % | | 32 | D C D D C C | 3Z25RE | 1 | 0.04 % | | 1 | 0.03 % | | 33 | C C / C C D C C / C | DL/SO9BA/P | 1 | 0.04 % | | 1 | 0.03 % | | 34 | C C / C C D C C C / C | DL/IW2NHE/P | 1 | 0.04 % | | 1 | 0.03 % | | 35 | C / C C D C | F/PA0M | 1 | 0.04 % | | 1 | 0.03 % | | 36 | C C / C D C C C | DL/W4GKR | 1 | 0.04 % | | 1 | 0.03 % | | 37 | C D C C C / D | I1NAI/7 | 1 | 0.04 % | | 1 | 0.03 % | | 38 | D C D D C | 4X70L | 1 | 0.04 % | | 1 | 0.03 % | | 39 | C / C C D C C C | M/SP8DKC | 1 | 0.04 % | | 2 | 0.06 % | | 40 | C D C / C | M3W/P | 1 | 0.04 % | | 1 | 0.03 % | | 41 | C C D / C C D C | OH0/PG2A | 1 | 0.04 % | | 1 | 0.03 % | | 42 | C C D D D C C C C C C | PA111SCOUTS | 1 | 0.04 % | | 1 | 0.03 % | | 43 | C C D D D D C C C | PF2018HIN | 1 | 0.04 % | | 1 | 0.03 % | | 44 | D C D C C C C | 9Y4FIFA | 1 | 0.04 % | | 1 | 0.03 % | | 45 | C C D D C C | RC18RO | 1 | 0.04 % | | 1 | 0.03 % | | 46 | C C D C C C / D / C C C ' | SA0BBO/7/QRP | 1 | 0.04 % | | 1 | 0.03 % | | 47 | C C D C C C C C C | SN0UNESCO | 1 | 0.04 % | | 1 | 0.03 % | | 48 | C C D D D D C | SN1918N | 1 | 0.04 % | | 1 | 0.03 % | | 49 | C D C C / D C | W5TN/9A | 1 | 0.04 % | | 1 | 0.03 % | | 50 | C C D C C / C C | YL3IZ/MM | 1 | 0.04 % | | 1 | 0.03 % | |
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