Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WO7J callsign genealogy
Currently held by WOOTTON JR, WILLIAM B
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 WO7J's current licensee, walking backwards.
- WRIGHT, DANIEL CWAgranted 2014-11-10cancelled 2018-02-27
Successor callsigns
Callsigns held now by people who previously held WO7J.
- Yamakita, KazuyukiORgranted 2025-11-21
All historical holders
Every license row we've seen with the callsign WO7J, oldest first.
- WOOTTON JR, WILLIAM B WA1995-04-25 → cancelled 1998-03-05
- Yamakita, Kazuyuki OR2007-05-08 → cancelled 2016-02-06
- WRIGHT, DANIEL C WA2018-02-27 active