Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4LBX callsign genealogy
Currently held by ESTEP, MODEST S
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 K4LBX's current licensee, walking backwards.
- Boggis, Lawrence JNCgranted 2020-12-07cancelled 2020-12-29
Successor callsigns
Callsigns held now by people who previously held K4LBX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4LBX, oldest first.
- ESTEP, MODEST S FL1997-05-20 → cancelled 2009-05-21
- Boggis, Larry NC2020-12-29 active