Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N9TWT callsign genealogy
Currently held by Fiorentini, Mauri L
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 N9TWT's current licensee, walking backwards.
- Fiorentini, Mauri LILgranted 2019-04-17cancelled 2021-11-06
Successor callsigns
Callsigns held now by people who previously held N9TWT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9TWT, oldest first.
- MILLER, ZACHORY C IL1993-06-08 → cancelled 2005-06-09
- Fiorentini, Mauri L IL2021-11-06 active