Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4GJT callsign genealogy
Currently held by Thornton, John R
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 W4GJT's current licensee, walking backwards.
- Thornton, John RGAgranted 2018-09-13cancelled 2020-04-28
Successor callsigns
Callsigns held now by people who previously held W4GJT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4GJT, oldest first.
- NORRIS SR, CHALMERS G UT1988-11-29 → cancelled 2000-11-30
- Thornton, John R GA2020-04-28 active