Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KG4EFN callsign genealogy
Currently held by Supinski, Chris 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 KG4EFN's current licensee, walking backwards.
- Supinski, Christopher TFLgranted 2018-05-23cancelled 2018-06-12
Successor callsigns
Callsigns held now by people who previously held KG4EFN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KG4EFN, oldest first.
- SUPINSKI, CHRIS T FL1999-07-30 → cancelled 2011-08-02
- Supinski, Chris T FL2018-06-12 active