Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N1MDF callsign genealogy
Currently held by Floyd, Mark D
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 N1MDF's current licensee, walking backwards.
- Floyd, Mark DPAgranted 2016-04-05cancelled 2016-05-03
Successor callsigns
Callsigns held now by people who previously held N1MDF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N1MDF, oldest first.
- GABEL SR, KURT A MA1992-04-21 → cancelled 2004-04-22
- Floyd, Mark D IN2026-03-26 active