Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1FXF callsign genealogy
Currently held by Sugisaka, Hirokazu
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 K1FXF's current licensee, walking backwards.
- Sugisaka, HirokazuCAgranted 2022-03-21cancelled 2022-04-22
Successor callsigns
Callsigns held now by people who previously held K1FXF.
No current licensee on record previously held this callsign.