Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF9FC callsign genealogy
Currently held by HAYASHI, UTARO
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 KF9FC's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KF9FC.
No current licensee on record previously held this callsign.