Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9ZVU callsign genealogy
Currently held by OETTER, 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 W9ZVU's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W9ZVU.
No current licensee on record previously held this callsign.