Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4LDM callsign genealogy
Currently held by MARTIN, MICHAEL C
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 N4LDM's current licensee, walking backwards.
- Marks, LarryALgranted 2007-08-22cancelled 2007-09-18
Successor callsigns
Callsigns held now by people who previously held N4LDM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4LDM, oldest first.
- MARTIN, MICHAEL C GA1991-04-16 → cancelled 2003-04-17
- Marks, Larry AL2017-07-06 active