Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI4YP callsign genealogy
Currently held by Hara, Hiroto
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 AI4YP's current licensee, walking backwards.
- Hara, HirotoFLgranted 2007-02-09cancelled 2007-05-25
Successor callsigns
Callsigns held now by people who previously held AI4YP.
- Hara, HirotoORgranted 2015-07-24