Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9DCU callsign genealogy
Currently held by Urberger, Donald C
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 W9DCU's current licensee, walking backwards.
- Urberger, Donald CILgranted 2014-10-08cancelled 2015-02-27
Successor callsigns
Callsigns held now by people who previously held W9DCU.
No current licensee on record previously held this callsign.