Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N9JX callsign genealogy
Currently held by Tomasek, Jim F
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 N9JX's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held N9JX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9JX, oldest first.
- Tomasek, Jim F IL2010-09-04 → cancelled 2022-11-04
- EICH, STEVEN P WI2022-11-26 active