Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KY4IZ callsign genealogy
Currently held by Willoughby, Tim C
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 KY4IZ's current licensee, walking backwards.
- Willoughby, Tim CKYgranted 2020-10-26cancelled 2021-07-26
Successor callsigns
Callsigns held now by people who previously held KY4IZ.
No current licensee on record previously held this callsign.