Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4DUC callsign genealogy
Currently held by French, Adam 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 N4DUC's current licensee, walking backwards.
- French, Adam DTNgranted 2010-08-13cancelled 2010-12-11
Successor callsigns
Callsigns held now by people who previously held N4DUC.
No current licensee on record previously held this callsign.