Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N9SJH callsign genealogy
Currently held by FILLENWARTH, STEPHEN A
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 N9SJH's current licensee, walking backwards.
- Hennessy, Stephen JNCgranted 2022-01-26cancelled 2022-03-15
Successor callsigns
Callsigns held now by people who previously held N9SJH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9SJH, oldest first.
- FILLENWARTH, STEPHEN A IN1993-02-16 → cancelled 2005-02-17
- Hennessy, Stephen J NC2022-03-15 active