Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7OO callsign genealogy
Currently held by Takahashi, Tomohiro
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 W7OO's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W7OO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7OO, oldest first.
- EVERETT, WILLIAM B WA2006-08-08 → cancelled 2018-11-06
- Takahashi, Tomohiro WA2018-11-24 active