Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4SJN callsign genealogy
Currently held by ESTEP, SHARON W
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 W4SJN's current licensee, walking backwards.
- Nosko, Steven JNCgranted 2015-03-18cancelled 2015-05-01
Successor callsigns
Callsigns held now by people who previously held W4SJN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4SJN, oldest first.
- ESTEP, JAMES S FL1997-04-08 → cancelled 1997-09-18
- ESTEP, SHARON W FL1998-12-11 → cancelled 2010-12-14
- NOSKO, STEVEN J NC2025-02-19 active