Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N9TTM callsign genealogy
Currently held by Nightenhelser, Holland
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 N9TTM's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held N9TTM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9TTM, oldest first.
- RUMBLEY, TERRY E IN1993-06-01 → cancelled 2005-06-02
- Mock, Sharon L IN2010-04-20 → cancelled 2022-04-21
- Nightenhelser, Holland IN2025-06-10 active