Above-average percentage of duplicate QSOs
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Since January 2024 the percentages of duplicate QSOs of DXpedition logs are listed on Club Log. Just one example for such a case for a Japanese station:
The most likely reason for this is that the calling station has not received a RR73 confirmation in FT8 and continues to call, but the DX station repeatedly logs each call. This might be a problem of the WSJT-X software in Fox-/Hound-Mode but multiple contacts in a twenty-minute window should be deleted, which is not the case for example with the log above.
All DXpeditions listed here on the Mega DXpeditions have dupes in their logs, typically between 2% and 8%. All we want is a fair competition amongst all (Mega) DXpeditions. That's why we decided to mark all Mega DXpeditions having a duplicate percentage of over 20% and are issuing a warning in the lists.
The total number of QSOs is calculated at a duplicate rate of 10% and shown in our lists (net number of QSOs plus 10%):
| Callsign(s) | DXCC Entity | Year | Original QSOs | Reduced QSOs | Duplicate rate |
|---|---|---|---|---|---|
| T32TT |  Eastern Kiribati |
2023 | 209,114 | 188,203 | 56.8 % |
| 3D2CR (2021) |  Conway Reef |
2021 | 45,450 | 40,905 | 45.8 % |
| T33T | Banaba Island |
2022 | 97,193 | 87,474 | 43.5 % |
| T22T |  Tuvalu |
2023 | 102,448 | 92,203 | 42.6 % |
| 3D2RRR | Rotuma |
2022 | 64,206 | 57,785 | 40.9 % |
| T30UN | Western Kiribati |
2023 | 123,597 | 111,237 | 40.7 % |
| T31TT | Central Kiribati |
2023 | 83,095 | 74,786 | 37.2 % |
| CB0ZA, ZEW, ZW |  Juan Fernandez Islands |
2024 | 104,342 | 93,908 | 28.0 % |
| TY5C |  Benin |
2024 | 45,927 | 41,334 | 24.9 % |
| 3B7M |  Agalega & St. Brandon Islands |
2023 | 128,254 | 115,429 | 22.4 % |
| TO8FH |  Mayotte |
2023 | 84,036 | 75,632 | 22.3 % |