Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N1UIS callsign genealogy
Currently held by Mongillo, Austin
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 N1UIS's current licensee, walking backwards.
- Mongillo, AustinCTgranted 2014-03-19cancelled 2016-08-05
Successor callsigns
Callsigns held now by people who previously held N1UIS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N1UIS, oldest first.
- TEFFT, RICHARD E CT1995-02-15 → cancelled 2007-02-16
- Mongillo, Austin CT2016-08-05 active