Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K8YU callsign genealogy
Currently held by Tsutsumi, Hidetoshi
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 K8YU's current licensee, walking backwards.
- Tsutsumi, HidetoshiCAgranted 2000-09-23cancelled 2000-10-24
Successor callsigns
Callsigns held now by people who previously held K8YU.
No current licensee on record previously held this callsign.