Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NF4Z callsign genealogy
Currently held by GREGG III, EUGENE S
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 NF4Z's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held NF4Z.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NF4Z, oldest first.
- GREGG III, EUGENE S SC1997-05-22 → cancelled 2009-05-23
- Dunlap, Micheal F SC2019-05-21 active