Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N3DM callsign genealogy
Currently held by MC COACH, RICHARD 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 N3DM's current licensee, walking backwards.
- MASSEY JR, DOUGLAS RMDgranted 2019-04-02cancelled 2019-12-17
Successor callsigns
Callsigns held now by people who previously held N3DM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N3DM, oldest first.
- MC COACH, RICHARD D PA2007-11-10 → cancelled 2019-11-27
- MASSEY JR, DOUGLAS R MD2019-12-17 active