Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0JI callsign genealogy
Currently held by MADISON, JAMES A
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 K0JI's current licensee, walking backwards.
- Tahara, KojiCAgranted 2001-09-15cancelled 2004-08-20
- N6RNUno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held K0JI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0JI, oldest first.
- MADISON, JAMES A MO1999-11-03 → cancelled 2002-07-20
- Tahara, Koji NJ2024-06-04 active