Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB4TB callsign genealogy
Currently held by THACKER, JACK P
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 KB4TB's current licensee, walking backwards.
- BULEY, KEVIN LKYgranted 2023-12-16cancelled 2025-04-18
Successor callsigns
Callsigns held now by people who previously held KB4TB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB4TB, oldest first.
- THACKER, JACK P AL1996-09-13 → cancelled 1999-12-01
- BULEY, KEVIN L KY2025-04-18 active