Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4MDG callsign genealogy
Currently held by Green, Michael
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 N4MDG's current licensee, walking backwards.
- Green, Michael DALgranted 2024-10-12cancelled 2024-11-02
Successor callsigns
Callsigns held now by people who previously held N4MDG.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4MDG, oldest first.
- RIMMER, FRANK D NC2005-02-23 → cancelled 2017-05-23
- Green, Michael AL2024-11-02 active