Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KA9WFI callsign genealogy
Currently held by COSTA, THOMAS P
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 KA9WFI's current licensee, walking backwards.
- N9GMWno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KA9WFI.
- COSTA, THOMAS PILgranted 2020-04-22