Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4PBU callsign genealogy
Currently held by HENRY, WINFIELD D
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 W4PBU's current licensee, walking backwards.
- PLOWMAN, JOHN DFLgranted 2005-07-06cancelled 2005-08-09
Successor callsigns
Callsigns held now by people who previously held W4PBU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4PBU, oldest first.
- HENRY, WINFIELD D SD1994-04-12 → cancelled 2002-08-20
- PLOWMAN, JOHN D FL2025-06-28 active