Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO4KSY callsign genealogy
Currently held by Vaughn IV, William Y
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 KO4KSY'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 KO4KSY.
- Vaughn IV, William YALgranted 2021-01-29