Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC9YEO callsign genealogy
Currently held by Ninth District FOC
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 KC9YEO'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 KC9YEO.
- W9FOCexpiredNinth District FOCINgranted 2013-02-20cancelled 2025-02-21