Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WH0U callsign genealogy
Currently held by Arai, Toshio
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 WH0U's current licensee, walking backwards.
- Arai, ToshioMPgranted 2005-05-31cancelled 2005-06-28
Successor callsigns
Callsigns held now by people who previously held WH0U.
No current licensee on record previously held this callsign.