Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7OXT callsign genealogy
Currently held by Yokoyama, Tsuyoshi
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 W7OXT's current licensee, walking backwards.
- YOKOYAMA, TSUYOSHIORgranted 2008-03-24cancelled 2008-04-12
Successor callsigns
Callsigns held now by people who previously held W7OXT.
No current licensee on record previously held this callsign.