Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1ASO callsign genealogy
Currently held by Takahashi, Shinichi
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 W1ASO's current licensee, walking backwards.
- Takahashi, ShinichiORgranted 2016-07-25cancelled 2016-11-18
Successor callsigns
Callsigns held now by people who previously held W1ASO.
No current licensee on record previously held this callsign.