Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO4YYO callsign genealogy
Currently held by Bamford IV, Theodore 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 KO4YYO'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 KO4YYO.
- Bamford IV, Theodore HTNgranted 2023-05-26