Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KJ7JTU callsign genealogy
Currently held by Trapp, Eric W
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 KJ7JTU's current licensee, walking backwards.
- Uy, JeffreyOKgranted 2025-02-05cancelled 2025-02-28
Successor callsigns
Callsigns held now by people who previously held KJ7JTU.
- Trapp, Eric WORgranted 2020-03-28
All historical holders
Every license row we've seen with the callsign KJ7JTU, oldest first.
- Trapp, Eric W OR2019-10-24 → cancelled 2020-03-28
- Uy, Jeffrey OK2025-02-28 active