Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W1GZI callsign genealogy
Currently held by Dunbar, William E
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 W1GZI's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W1GZI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1GZI, oldest first.
- DUNBAR JR, CHARLES W TX2007-05-16 → cancelled 2019-08-08
- Dunbar, William E NH2020-02-19 active