Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6KPI callsign genealogy
Currently held by IRWIN, JAMES H
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 K6KPI's current licensee, walking backwards.
- Castellino, Anthony JCAgranted 2019-02-11cancelled 2019-03-01
Successor callsigns
Callsigns held now by people who previously held K6KPI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6KPI, oldest first.
- IRWIN, JAMES H CA2005-11-29 → cancelled 2018-02-22
- Castellino, Anthony J AZ2019-03-01 active