Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4BGZ callsign genealogy
Currently held by Croneberger, William J
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 K4BGZ's current licensee, walking backwards.
- Croneberger, WilliamVAgranted 2008-07-29cancelled 2008-08-22
Successor callsigns
Callsigns held now by people who previously held K4BGZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4BGZ, oldest first.
- CRONEBERGER, LOUIS T VA1989-02-07 → cancelled 2001-02-08
- Croneberger, William J VA2018-07-24 active