Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KZ4EX callsign genealogy
Currently held by Long, Wilbur A
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 KZ4EX's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KZ4EX.
No current licensee on record previously held this callsign.