Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC9YXI callsign genealogy
Currently held by Oswald, Brian J
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 KC9YXI's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KC9YXI.
- Oswald, Brian JWIgranted 2013-05-29cancelled 2023-05-26