Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4ZUK callsign genealogy
Currently held by CAUDILL, DONALD S
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 W4ZUK's current licensee, walking backwards.
- Caudill, Donald STNgranted 2006-11-06cancelled 2009-12-22
Successor callsigns
Callsigns held now by people who previously held W4ZUK.
No current licensee on record previously held this callsign.