Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI4SW callsign genealogy
Currently held by DOWNEY JR, LOUIE G
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 AI4SW's current licensee, walking backwards.
- Downey Jr, Louie GSCgranted 2004-06-16cancelled 2007-01-17
Successor callsigns
Callsigns held now by people who previously held AI4SW.
No current licensee on record previously held this callsign.