Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4ZFW callsign genealogy
Currently held by Duke, Denise M
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 N4ZFW's current licensee, walking backwards.
- Duke, Denise MALgranted 2014-01-28cancelled 2014-02-19
Successor callsigns
Callsigns held now by people who previously held N4ZFW.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4ZFW, oldest first.
- DUKE, DENISE M AL1990-05-29 → cancelled 2002-05-30
- Duke, Denise M AL2024-01-17 active