Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KF6UMH callsign genealogy
Currently held by FURUYA, TOSHIHIKO
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 KF6UMH's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KF6UMH.
- W6AORactiveAOR AMATEUR RADIO CLUBCAgranted 2018-12-12