Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO4JJI callsign genealogy
Currently held by Koch, Stuart A
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 KO4JJI'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 KO4JJI.
- Koch, Stuart AVAgranted 2021-04-10cancelled 2021-09-18