Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO4FXF callsign genealogy
Currently held by Flemish III, Frank
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 KO4FXF's current licensee, walking backwards.
- Flemish III, FrankALgranted 2020-03-09cancelled 2020-04-14
Successor callsigns
Callsigns held now by people who previously held KO4FXF.
No current licensee on record previously held this callsign.