Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NT1T callsign genealogy
Currently held by ALLAN, CAROLYN J
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 NT1T's current licensee, walking backwards.
- Hartwig, CarstenPAgranted 2010-10-08cancelled 2010-12-21
Successor callsigns
Callsigns held now by people who previously held NT1T.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NT1T, oldest first.
- ALLAN, CAROLYN J FL1998-11-02 → cancelled 2010-11-03
- Hartwig, Carsten PA2020-10-07 active