Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9WUF callsign genealogy
Currently held by LORBIECKI, JOHN F
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 K9WUF's current licensee, walking backwards.
- Winotai, Sam SCAgranted 2016-12-20cancelled 2026-07-10
Successor callsigns
Callsigns held now by people who previously held K9WUF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9WUF, oldest first.
- LORBIECKI, JOHN F WI2014-06-09 → cancelled 2026-06-18
- Winotai, Sam S CA2026-07-10 active