Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0CSI callsign genealogy
Currently held by BOULTON, ANTHONY J
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 W0CSI's current licensee, walking backwards.
- INFANTE, CHRISTOPHER SOHgranted 2015-05-19cancelled 2021-04-20
Successor callsigns
Callsigns held now by people who previously held W0CSI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W0CSI, oldest first.
- BOULTON, ANTHONY J IA2008-12-23 → cancelled 2020-12-24
- INFANTE, CHRISTOPHER S OH2021-04-20 active