Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4BTT callsign genealogy
Currently held by HACKNEY, LAWRENCE E
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 K4BTT's current licensee, walking backwards.
- Tice, Thomas EFLgranted 2010-07-29cancelled 2015-10-02
Successor callsigns
Callsigns held now by people who previously held K4BTT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4BTT, oldest first.
- HACKNEY, LAWRENCE E FL1994-08-15 → cancelled 2001-08-02
- Tice, Thomas E FL2025-07-08 active