Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI4T callsign genealogy
Currently held by Serio, Charles M
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 AI4T's current licensee, walking backwards.
- Serio, Charles MFLgranted 1997-05-27cancelled 2002-04-10
Successor callsigns
Callsigns held now by people who previously held AI4T.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AI4T, oldest first.
- REID, LARRY D KY1990-03-20 → cancelled 2002-03-21
- Serio, Charles M OH2023-06-28 active