Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4AXI callsign genealogy
Currently held by CAMPBELL, MICHAEL D
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 K4AXI's current licensee, walking backwards.
- GRENIER, TRAVIS EVAgranted 2019-12-03cancelled 2019-12-24
Successor callsigns
Callsigns held now by people who previously held K4AXI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4AXI, oldest first.
- CAMPBELL, MICHAEL D KY1996-04-22 → cancelled 2008-04-23
- Grenier, Travis VA2019-12-24 active