Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF4FO callsign genealogy
Currently held by OSTEEN, JAMES E
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 KF4FO's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KF4FO.
- MCGOUGH, BRIAN KVAgranted 2026-04-28
All historical holders
Every license row we've seen with the callsign KF4FO, oldest first.
- OSTEEN, JAMES E KY1997-04-23 → cancelled 2009-04-24
- MCGOUGH, BRIAN K VA2023-12-02 → cancelled 2026-04-28