Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KG4BUT callsign genealogy
Currently held by Butler, Grayson L
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 KG4BUT's current licensee, walking backwards.
- Butler, Grayson LFLgranted 2023-03-17cancelled 2023-04-04
Successor callsigns
Callsigns held now by people who previously held KG4BUT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KG4BUT, oldest first.
- OTERO, DELIA FL2008-11-12 → cancelled 2021-02-04
- Butler, Grayson L FL2023-04-04 active