Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO4ZOJ callsign genealogy
Currently held by Leary Jr, Edward C
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 KO4ZOJ'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 KO4ZOJ.
- Leary Jr, Edward CFLgranted 2022-04-30