Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4UMD callsign genealogy
Currently held by Northwest Alabama DX Club
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 K4UMD's current licensee, walking backwards.
- KK4UILcancelledNorthwest Alabama DX ClubALgranted 2013-10-17cancelled 2015-08-15
Successor callsigns
Callsigns held now by people who previously held K4UMD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4UMD, oldest first.
- BONNER, JAMES M AL2003-02-03 → cancelled 2015-02-03
- Northwest Alabama DX Club AL2015-08-15 active