Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4ZSF callsign genealogy
Currently held by GENTRY, JOHN B
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 N4ZSF's current licensee, walking backwards.
- BARKER, ANTHONY ENCgranted 2003-02-28cancelled 2003-03-06
Successor callsigns
Callsigns held now by people who previously held N4ZSF.
No current licensee on record previously held this callsign.