Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KU4BJ callsign genealogy
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 KU4BJ'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 KU4BJ.
- STARLING, WILLIAM JNCgranted 2025-02-04