Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO4QBD callsign genealogy
Currently held by Campbell Sr, Robert T
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 KO4QBD'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 KO4QBD.
- Campbell Sr, Robert TALgranted 2021-06-11