Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KX4M callsign genealogy
Currently held by Hansen, Craig W
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 KX4M's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KX4M.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KX4M, oldest first.
- FOSSIL ROCK CONTESTERS AL2007-09-18 → cancelled 2019-09-19
- Hansen, Craig W AL2019-10-08 active