Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9WSP callsign genealogy
Currently held by DUNCAN, BRIAN 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 W9WSP's current licensee, walking backwards.
- Popovici, William SILgranted 2026-01-23cancelled 2026-03-24
Successor callsigns
Callsigns held now by people who previously held W9WSP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9WSP, oldest first.
- DUNCAN, BRIAN K WA2006-05-19 → cancelled 2018-05-22
- Popovici, William S IL2026-03-24 active