Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD9MD callsign genealogy
Currently held by DIESEN, MICHAEL J
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 KD9MD's current licensee, walking backwards.
- DIESEN, MICHAEL JILgranted 2015-04-02cancelled 2016-07-12
Successor callsigns
Callsigns held now by people who previously held KD9MD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD9MD, oldest first.
- HANEY, RALPH W IN1994-09-09 → cancelled 2006-09-12
- DIESEN, MICHAEL J IL2016-07-12 active