Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4WMD callsign genealogy
Currently held by SFWMD AMATEUR RADIO 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 K4WMD's current licensee, walking backwards.
- Watkins, Michael DALgranted 2013-04-17cancelled 2013-05-14
Successor callsigns
Callsigns held now by people who previously held K4WMD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4WMD, oldest first.
- SFWMD AMATEUR RADIO CLUB FL1996-11-26 → cancelled 2008-11-27
- Watkins, Michael D AL2023-02-25 active