Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4EXE callsign genealogy
Currently held by Andert, Erich
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 K4EXE's current licensee, walking backwards.
- Andert, ErichFLgranted 2022-01-24cancelled 2022-04-12
Successor callsigns
Callsigns held now by people who previously held K4EXE.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4EXE, oldest first.
- OLSON, JOHN GA2006-12-05 → cancelled 2019-02-12
- Andert, Erich FL2022-04-12 active