Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W3DU callsign genealogy
Currently held by Fujimoto, Yoshiki
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 W3DU's current licensee, walking backwards.
- Fujimoto, YoshikiORgranted 2012-06-05cancelled 2020-06-02
Successor callsigns
Callsigns held now by people who previously held W3DU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3DU, oldest first.
- LAUBACH, GORDON R PA2008-03-14 → cancelled 2018-05-14
- Fujimoto, Yoshiki OR2020-06-02 active