Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K2BI callsign genealogy
Currently held by Yamamoto, Koji
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 K2BI's current licensee, walking backwards.
- Yamamoto, KojiCAgranted 2009-03-05cancelled 2009-03-27
Successor callsigns
Callsigns held now by people who previously held K2BI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K2BI, oldest first.
- SANSONETTI, ALFRED S NJ1997-03-03 → cancelled 2009-03-04
- Yamamoto, Koji CA2018-12-28 active