Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KS5T callsign genealogy
Currently held by GREEN, FELTON 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 KS5T's current licensee, walking backwards.
- Hartmann, Graham CTXgranted 2020-03-09cancelled 2025-03-08
Successor callsigns
Callsigns held now by people who previously held KS5T.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KS5T, oldest first.
- GREEN, FELTON T TX2013-09-17 → cancelled 2025-02-19
- Hartmann, Graham C TX2025-03-08 active