Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD4UDK callsign genealogy
Currently held by WRIGHT, WILLIAM J
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 KD4UDK'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 KD4UDK.
- WRIGHT, WILLIAM JNCgranted 2021-02-02cancelled 2025-08-30