Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4PBZ callsign genealogy
Currently held by Jesionowski, Thomas 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 W4PBZ's current licensee, walking backwards.
- Jesionowski, Thomas DWAgranted 2017-11-28cancelled 2017-12-16
Successor callsigns
Callsigns held now by people who previously held W4PBZ.