Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO4EDB callsign genealogy
Currently held by Lupton Jr, Joseph H
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 KO4EDB'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 KO4EDB.
- Lupton Jr, Joseph HNCgranted 2020-06-30