Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI4LA callsign genealogy
Currently held by Shibuya, Yoshitaka
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 AI4LA's current licensee, walking backwards.
- Shibuya, YoshitakaFLgranted 2005-05-31cancelled 2005-06-24
Successor callsigns
Callsigns held now by people who previously held AI4LA.
No current licensee on record previously held this callsign.