Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KY4SEX callsign genealogy
Currently held by Bush, John P
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 KY4SEX's current licensee, walking backwards.
- KR4FGNcancelledFreqs And Geeks Amateur Radio ClubNCgranted 2025-07-15cancelled 2025-08-02
Successor callsigns
Callsigns held now by people who previously held KY4SEX.
- Bush, John PMSgranted 2023-06-22
All historical holders
Every license row we've seen with the callsign KY4SEX, oldest first.
- Bush, John P MS2023-05-13 → cancelled 2023-06-22
- Freqs And Geeks Amateur Radio Club NC2025-08-02 active