Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WD4BNZ callsign genealogy
Currently held by BONZI, TIMOTHY R
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 WD4BNZ's current licensee, walking backwards.
- BONZI, TIMOTHY RFLgranted 2021-05-03cancelled 2021-05-25
Successor callsigns
Callsigns held now by people who previously held WD4BNZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WD4BNZ, oldest first.
- KAUFMANN, HAROLD D KY1988-11-08 → cancelled 2000-11-09
- BONZI, TIMOTHY R FL2021-05-25 active