The latest Dupe Report and Analytics files are uploaded daily around 00:30 UTC.
The current files used to generate the list:
| Rank | Skimmer Call | Total Spots | Net Spots | Dupes Removed | Dupe % | Skew ppm |
|---|
Any skimmer with a skew of more than ±3 ppm should adjust their calibration.
Any skimmer producing more than 10% dupes should correct their configuration error.
If you don't see your node on the list:
Nodes having more than a 0.5kHz skew are discarded.
Nodes only spotting RTTY are discarded.
Nodes only spotting below 40M are discarded.
HA8TKS has a real-time CW skimmer comparison page.
Enter your node callsign↓ to compare it with your ten closest skimmer neighbors over the last 15 minutes.
HA8TKS also has the option to select the exact skimmers you want to compare.
VE3SUN has the IBP-RBN Challenge ranking skimmers by the number of NCDXF beacons heard each day.
The Challenge Table is updated each day around 09:30PM Eastern.
See N4ZR's blog post Beacons Revisited - a checklist to get your skimmer spotting the NCDXF beacons.
DJ5CW has a Beacon Ranking page that does the opposite and ranks beacons by the number of times they get spotted on the RBN.