Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4ZGG callsign genealogy
Currently held by DUKE, ROBERT 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 N4ZGG's current licensee, walking backwards.
- Duke, Robert MALgranted 2013-12-02cancelled 2013-12-31
Successor callsigns
Callsigns held now by people who previously held N4ZGG.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4ZGG, oldest first.
- DUKE, ROBERT M AL1990-05-29 → cancelled 2002-05-30
- Duke, Robert M AL2024-01-17 active