Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4ZH callsign genealogy
Currently held by Vilagi, John 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 K4ZH's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K4ZH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4ZH, oldest first.
- Goetz, Nathan L FL2013-09-25 → cancelled 2018-11-28
- Vilagi, John R KY2020-12-18 active