Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4KHZ callsign genealogy
Currently held by Di Girolamo, JACOB 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 K4KHZ's current licensee, walking backwards.
- Di Girolamo, Jacob DVAgranted 2023-10-11cancelled 2024-08-16
Successor callsigns
Callsigns held now by people who previously held K4KHZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4KHZ, oldest first.
- Sokol, Ronald M VA2012-05-09 → cancelled 2024-07-27
- Di Girolamo, JACOB D VA2024-08-16 active