Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4GWU callsign genealogy
Currently held by WARNER JR, MELVIN J
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 K4GWU's current licensee, walking backwards.
- Esmeral, IndyFLgranted 2024-03-27cancelled 2025-01-03
Successor callsigns
Callsigns held now by people who previously held K4GWU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4GWU, oldest first.
- WARNER JR, MELVIN J NC2011-04-01 → cancelled 2023-05-31
- Esmeral, Indy FL2025-01-03 active