Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KO4OX callsign genealogy
Currently held by HARMON, THOMAS N
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 KO4OX's current licensee, walking backwards.
- KD4AODno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KO4OX.
- HARMON, THOMAS NVAgranted 2021-05-11