Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N7JTT callsign genealogy
Currently held by Trefethen, John T
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 N7JTT's current licensee, walking backwards.
- Trefethen, John TWAgranted 2023-04-28cancelled 2023-05-16
Successor callsigns
Callsigns held now by people who previously held N7JTT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N7JTT, oldest first.
- LANGERAK, NORMAN T NV1997-05-02 → cancelled 2009-05-05
- Trefethen, John T WA2023-05-16 active