Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WB4ZIU callsign genealogy
Currently held by ALLISON JR, DONALD L
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 WB4ZIU'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 WB4ZIU.
- ALLISON JR, DONALD LNYgranted 2022-07-29