Activity Observed
Ham radio operators ranked by real-world activity captured from APRS-IS, Reverse Beacon Network, and Parks on the Air feeds.
Unique Maidenhead grid squares visited via APRS position reports. Rewards mobile operators who cover geographic area.
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Data from APRS-IS, Reverse Beacon Network, and Parks on the Air. Phone/SSB and RF-only operations are not reflected.
Rankings refresh every 15 minutes.