Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI4OK callsign genealogy
Currently held by Sementilli, Ricardo D
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 AI4OK's current licensee, walking backwards.
- Sementilli, Ricardo DFLgranted 2005-12-21cancelled 2006-02-23
Successor callsigns
Callsigns held now by people who previously held AI4OK.
No current licensee on record previously held this callsign.