Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4ZZX callsign genealogy
Currently held by Petrone, Steven C
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 K4ZZX's current licensee, walking backwards.
- PETRONE, STEVEN CSCgranted 2005-06-07cancelled 2010-08-06
Successor callsigns
Callsigns held now by people who previously held K4ZZX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4ZZX, oldest first.
- GARRISON, ALFRED H FL1996-07-11 → cancelled 2008-07-12
- Petrone, Steven C SC2020-05-15 active