Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KZ4HE callsign genealogy
Currently held by EYSTER III, WILLIAM H
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 KZ4HE's current licensee, walking backwards.
- EYSTER III, WILLIAM HFLgranted 1996-03-26cancelled 1999-12-18
Successor callsigns
Callsigns held now by people who previously held KZ4HE.
No current licensee on record previously held this callsign.