Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4CMJ callsign genealogy
Currently held by JAMES, CHRISTOPHER M
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 K4CMJ's current licensee, walking backwards.
- JAMES, CHRISTOPHER MNCgranted 2009-11-30cancelled 2009-12-25
Successor callsigns
Callsigns held now by people who previously held K4CMJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4CMJ, oldest first.
- BUTTS, DONALD H FL1995-11-27 → cancelled 2007-11-28
- JAMES, CHRISTOPHER M NC2019-11-12 active