Persistent Signal Catalog · Class I
The 1979 event
A single strong, structured event lasting roughly twelve seconds, recorded from a fixed direction and never repeated.
A single strong, structured event lasting roughly twelve seconds, recorded from a fixed direction and never repeated.
Public packet
- twelve-second event envelope
- azimuth reconstruction abstract
- non-recurrence ledger
- operator log reconciliation
Review controls
- Coordinate source
- Calder Ridge azimuth reconstruction, public abstract
- Uncertainty
- Approximate centroid; public marker rounded from restricted station geometry
- Release state
- Public centroid released for browsing only
Processing notes
- single-event envelope normalization
- fixed-direction reconstruction with restricted station geometry removed
- weather, aircraft, and transmitter exclusion review
- multi-decade recurrence search against archived station hours
Ordinary-source checks
- maintenance and station schedule review
- ordinary-source exclusion summary
- release review before public posting
Release limits
- centroid is rounded for public sky browsing
- raw station timing remains restricted
- entry is excluded from automated candidate ranking because it has not repeated
Public release note
Plotted as a historical centroid only. The public point is not a claim of source location and is withheld from automatic candidate scoring.