Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI7ST callsign genealogy
Currently held by Ferguson, Thomas N
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 AI7ST's current licensee, walking backwards.
- Ferguson, Thomas NAZgranted 2023-07-20cancelled 2023-07-31
Successor callsigns
Callsigns held now by people who previously held AI7ST.
- Ferguson, Thomas NAZgranted 2023-08-22