Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1DUG callsign genealogy
Currently held by THOMPSON, DOUGLAS K
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 W1DUG's current licensee, walking backwards.
- THOMPSON, DOUGLAS KUTgranted 2001-05-24cancelled 2002-04-03
Successor callsigns
Callsigns held now by people who previously held W1DUG.
No current licensee on record previously held this callsign.