Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4ZYZ callsign genealogy
Currently held by Bush, Stephen
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 K4ZYZ's current licensee, walking backwards.
- Bush, StephenVAgranted 2024-12-24cancelled 2025-02-01
Successor callsigns
Callsigns held now by people who previously held K4ZYZ.
No current licensee on record previously held this callsign.