Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AI4SG callsign genealogy
Currently held by Gillis, Gerald T
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 AI4SG's current licensee, walking backwards.
- Gillis, Gerald TVAgranted 2005-10-27cancelled 2006-10-16
Successor callsigns
Callsigns held now by people who previously held AI4SG.
No current licensee on record previously held this callsign.