Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K3DUC callsign genealogy
Currently held by Sheridan, Grey S
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by K3DUC's current licensee, walking backwards.
- Sheridan, Grey SDEgranted 2025-05-13cancelled 2026-01-03
Successor callsigns
Callsigns held now by people who previously held K3DUC.
No current licensee on record previously held this callsign.