Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4BXX callsign genealogy
Currently held by CRABTREE, OLIN A
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 K4BXX's current licensee, walking backwards.
- DAVIS, JEFFERY DVAgranted 2014-06-03cancelled 2015-08-11
Successor callsigns
Callsigns held now by people who previously held K4BXX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4BXX, oldest first.
- CRABTREE, OLIN A FL1994-03-15 → cancelled 2006-03-16
- DAVIS, JEFFERY D IN2025-06-04 active