Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KZ4UE callsign genealogy
Currently held by Longsworth, William K
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 KZ4UE's current licensee, walking backwards.
- Longsworth, William KFLgranted 2025-06-10cancelled 2025-06-17
Successor callsigns
Callsigns held now by people who previously held KZ4UE.
No current licensee on record previously held this callsign.