Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4MXI callsign genealogy
Currently held by HOFFERBERT, ERNEST C
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 K4MXI's current licensee, walking backwards.
- Terrell, Michael DKYgranted 2020-11-25cancelled 2020-12-15
Successor callsigns
Callsigns held now by people who previously held K4MXI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4MXI, oldest first.
- HOFFERBERT, ERNEST C AL1996-08-08 → cancelled 2008-08-09
- Terrell, Michael D IN2020-12-15 active