Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AI4GN callsign genealogy
Currently held by Yamamoto, Yuichi
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 AI4GN's current licensee, walking backwards.
- Yamamoto, YuichiGAgranted 2001-12-13cancelled 2004-08-02
Successor callsigns
Callsigns held now by people who previously held AI4GN.
- Yamamoto, YuichiGAgranted 2019-04-30