Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KZ4YI callsign genealogy
Currently held by Blough, William A
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 KZ4YI'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 KZ4YI.
- Blough, William AFLgranted 2025-12-30