Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N9IN callsign genealogy
Currently held by Thormahlen, Lincoln
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 N9IN's current licensee, walking backwards.
- Thormahlen, LincolnINgranted 2008-02-12cancelled 2008-12-12
Successor callsigns
Callsigns held now by people who previously held N9IN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9IN, oldest first.
- PORTAGE AMATEUR RADIO CLUB IN1996-11-20 → cancelled 2008-11-21
- Thormahlen, Lincoln IN2018-09-18 active