Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9GKS callsign genealogy
Currently held by Sepic, Frank 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 W9GKS's current licensee, walking backwards.
- Sepic, ThomasWIgranted 2021-02-08cancelled 2024-04-20
Successor callsigns
Callsigns held now by people who previously held W9GKS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9GKS, oldest first.
- Sepic, Frank J WI2014-11-05 → cancelled 2024-02-05
- Sepic, Thomas WI2024-04-20 active