| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA1ON | 834 | 32.16 % | | 1586 | 33.69 % | | 2 | C C D C C C | CT1BOH | 626 | 24.14 % | | 944 | 20.05 % | | 3 | C C D C | AA1K | 362 | 13.96 % | | 727 | 15.44 % | | 4 | C D C C | B7HQ | 326 | 12.57 % | | 511 | 10.85 % | | 5 | C D C C C | F1RAF | 172 | 6.63 % | | 259 | 5.50 % | | 6 | C D D C | E70A | 95 | 3.66 % | | 360 | 7.65 % | | 7 | C D D C C | A71AM | 33 | 1.27 % | | 58 | 1.23 % | | 8 | D C D C C | 4M5EN | 28 | 1.08 % | | 56 | 1.19 % | | 9 | C D C | C4W | 17 | 0.66 % | | 39 | 0.83 % | | 10 | D C D C | 3Z0X | 11 | 0.42 % | | 19 | 0.40 % | | 11 | C C D C C / C | DJ4MM/P | 7 | 0.27 % | | 13 | 0.28 % | | 12 | D C D C C C | 2E0CVN | 7 | 0.27 % | | 7 | 0.15 % | | 13 | C C / C D C C | DL/K5NA | 6 | 0.23 % | | 12 | 0.25 % | | 14 | C C / C C D C C C | DL/HB9DQL | 6 | 0.23 % | | 14 | 0.30 % | | 15 | C C / C C D C C | DL/EA7KW | 6 | 0.23 % | | 14 | 0.30 % | | 16 | C C D C C C / C | DL2KUH/P | 5 | 0.19 % | | 9 | 0.19 % | | 17 | C C D D C C C | AO18FWC | 4 | 0.15 % | | 5 | 0.11 % | | 18 | C C / C C D C | DL/HG0R | 4 | 0.15 % | | 7 | 0.15 % | | 19 | C C / C D C C C | DL/G4IRN | 3 | 0.12 % | | 4 | 0.08 % | | 20 | C D C C C / C | F4GKR/P | 3 | 0.12 % | | 4 | 0.08 % | | 21 | C C D C C / D | NU1AW/9 | 3 | 0.12 % | | 6 | 0.13 % | | 22 | C C D C C / C C C | EA7TN/QRP | 2 | 0.08 % | | 3 | 0.06 % | | 23 | C C D / C C D C C | SV2/RW3AL | 2 | 0.08 % | | 2 | 0.04 % | | 24 | C C D C C C / C C | DG7LAN/MM | 2 | 0.08 % | | 2 | 0.04 % | | 25 | C C D C / C | OL5E/P | 2 | 0.08 % | | 2 | 0.04 % | | 26 | C C D D C | OG55W | 2 | 0.08 % | | 10 | 0.21 % | | 27 | C C D D D C C C | OE100RAD | 2 | 0.08 % | | 4 | 0.08 % | | 28 | C D D C C C | S56WYB | 2 | 0.08 % | | 2 | 0.04 % | | 29 | D C / C D D C C | 9A/S57KM | 1 | 0.04 % | | 3 | 0.06 % | | 30 | C C D C C C C | DA0WRTC | 1 | 0.04 % | | 2 | 0.04 % | | 31 | C / C C D C C | F/PD1RP | 1 | 0.04 % | | 2 | 0.04 % | | 32 | C C D / C C D C C C / C' | ES7/OH3KAV/M | 1 | 0.04 % | | 1 | 0.02 % | | 33 | D C / C C D C | 4L/RC5A | 1 | 0.04 % | | 2 | 0.04 % | | 34 | C C D D C C | LM90HQ | 1 | 0.04 % | | 1 | 0.02 % | | 35 | D C / C C D C C C | 9A/DL5ROB | 1 | 0.04 % | | 1 | 0.02 % | | 36 | C C D C / C C D | NP4G/KP2 | 1 | 0.04 % | | 1 | 0.02 % | | 37 | D C D C C / C C C | 9A4OP/QRP | 1 | 0.04 % | | 1 | 0.02 % | | 38 | C C D D C C C C | LM90NRRL | 1 | 0.04 % | | 1 | 0.02 % | | 39 | C C D D D C C | OE100XA | 1 | 0.04 % | | 1 | 0.02 % | | 40 | C C D D D | DF900 | 1 | 0.04 % | | 1 | 0.02 % | | 41 | C / C D C C C | F/G0PZA | 1 | 0.04 % | | 1 | 0.02 % | | 42 | C C D C C / C C | RA0LQ/MM | 1 | 0.04 % | | 2 | 0.04 % | | 43 | C D D C C / C C | S51TA/MM | 1 | 0.04 % | | 3 | 0.06 % | | 44 | C C D C C C / C C C | EA7AAW/QRP | 1 | 0.04 % | | 1 | 0.02 % | | 45 | C D D C C C C | J32FIFA | 1 | 0.04 % | | 1 | 0.02 % | | 46 | C C D / C D D C C | SV9/S55OO | 1 | 0.04 % | | 1 | 0.02 % | | 47 | C D C C / D | W1AW/4 | 1 | 0.04 % | | 1 | 0.02 % | | 48 | C D C C C / C C D | W6PNG/VY2 | 1 | 0.04 % | | 1 | 0.02 % | | 49 | C D D C / C C C | Z35M/QRP | 1 | 0.04 % | | 1 | 0.02 % | |
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